Using rectangles each of whose height is given by the value of the function at the midpoint of the rectangle's base (the midpoint rule), estimate the area under the graph of the following function, using first two and then four rectangles. f(x)=x5​ between x=5 and x=9. Using two rectangles, the estimate for the area under the curve is (Round to three decimal places as needed). Using four rectangles, the estimate for the area under the curve is (Round to three decimal places as needed.) 

Answers

Answer 1

The area using two rectangles is 81088 and using four rectangles is 133821.625

Given data:

To estimate the area under the graph of the function f(x) = x⁵ between x = 5 and x = 9 using the midpoint rule, we can divide the interval into smaller sub intervals and approximate the area using rectangles.

Using two rectangles:

First, we need to calculate the width of each rectangle by dividing the total width of the interval by the number of rectangles:

Width = (9 - 5) / 2 = 4 / 2 = 2

Next, we evaluate the function at the midpoints of each rectangle's base and calculate the sum of their heights:

Midpoint 1: x = 5 + (2/2) = 6

Height 1: f(6) = 6⁵ = 7776

Midpoint 2: x = 5 + 2 + (2/2) = 8

Height 2: f(8) = 8⁵ = 32768

Now, we can calculate the area of each rectangle and sum them up:

Area 1 = Width * Height 1 = 2 * 7776 = 15552

Area 2 = Width * Height 2 = 2 * 32768 = 65536

Total area using two rectangles = Area 1 + Area 2 = 15552 + 65536 = 81088

Using four rectangles:

Similarly, we divide the interval into four equal sub intervals:

Width = (9 - 5) / 4 = 4 / 4 = 1

Calculate the heights at the midpoints of each sub interval:

Midpoint 1: x = 5 + (1/2) = 5.5

Height 1: f(5.5) = 5.5⁵ = 6919.875

Midpoint 2: x = 5 + 1 + (1/2) = 6.5

Height 2: f(6.5) = 6.5⁵ = 20193.625

Midpoint 3: x = 5 + 2 + (1/2) = 7.5

Height 3: f(7.5) = 7.5⁵ = 75937.5

Midpoint 4: x = 5 + 3 + (1/2) = 8.5

Height 4: f(8.5) = 8.5⁵ = 30770.625

Calculate the area of each rectangle and sum them up:

Area 1 = Width * Height 1 = 1 * 6919.875 = 6919.875

Area 2 = Width * Height 2 = 1 * 20193.625 = 20193.625

Area 3 = Width * Height 3 = 1 * 75937.5 = 75937.5

Area 4 = Width * Height 4 = 1 * 30770.625 = 30770.625

Total area using four rectangles = Area 1 + Area 2 + Area 3 + Area 4 = 6919.875 + 20193.625 + 75937.5 + 30770.625 = 133821.625

Hence, using two rectangles, the estimated area under the curve is 81088, and using four rectangles, the estimated area is 133821.625.

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Related Questions

Question 62 (1 point) The value 100 megrwath is equivalent to A) \( 100 \times 10^{3} \) watts B) \( 100 \times 10^{f} \) watts C) \( 100 \times 10^{3} \) watts D) \( 100 \times 10^{6} \) watts Questi

Answers

The value 100 megwatts is equivalent to 100 × 10⁶ watts. This is because the prefix "mega" means 1 million, and in scientific notation, 1 million is written as 100 × 10⁶. The other answer choices are incorrect.

The value 100 megwatts is equivalent to D) ( 100 \times 10^{6} ) watts. The prefix "mega" means 1 million, so 100 megwatts is equal to 100 million watts. In scientific notation, this is written as 100 × 10⁶ watts.

The other answer choices are incorrect. Option A, ( 100 \times 10^{3} ) watts, is equal to 100 thousand watts. Option B, ( 100 \times 10^{f} ) watts, is not a valid scientific notation expression. Option C, ( 100 \times 10^{3} ) watts, is equal to 100 thousand watts.

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Evaluate limx→[infinity]x(π−2tan−¹ (2x)).

Answers

The limit of x times the expression π - 2tan^(-1)(2x) as x approaches infinity is infinity.

To evaluate the limit, let's simplify the expression inside the parentheses first. The arctangent function, tan^(-1)(2x), approaches π/2 as x approaches infinity because the tangent of π/2 is undefined. Therefore, the expression inside the parentheses, π - 2tan^(-1)(2x), approaches π - 2(π/2) = π - π = 0 as x approaches infinity.

Now, multiplying this expression by x, we have x * 0 = 0. Thus, the limit of x times π - 2tan^(-1)(2x) as x approaches infinity is 0.

However, this is not the correct answer. Upon closer inspection, we notice that the expression π - 2tan^(-1)(2x) actually approaches 0 at a slower rate than x approaches infinity. This means that when we multiply x by an expression that tends to approach 0, the result will be an indeterminate form of ∞ * 0. In such cases, we need to use additional techniques, such as L'Hôpital's rule or algebraic manipulation, to determine the limit. Without further information, it is not possible to provide a definitive evaluation of the limit.

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PM End Date: 5/31/2022 11:59:00 PM (7%) Problem 11: There is approximately 1033 J of energy available from the fusion of hydrogen in the world's oceans. 50% Part (a) If 0.15 1033 J of this energy were utilized, what would be the decrease in the mass of the oceans? Express your answer in kilograms. Grade Summary Am= 0% Deductions Potential Late Work 100% 50% 50% sin() Late Potential cos() tan() I ( 7 89 asin() acos() E14 5 6 Submissions cotan() atan) acotan() sinh() cosh() 1 2 3 Attempts remaining: 40 (0% per attempt) detailed view . tinh) cotanh) Degrees O Radians + 0 VO SAK Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining 2 Feedback: 3% deduction per feedback 50% Part (b) How great a volume of water does this correspond to in cubic meters?

Answers

a. The decrease in the mass of the oceans would be approximately 1.67 * 10^15 kg.

b.  The volume of water corresponding to this mass would be approximately 1.67 * 10^12 cubic meters.

To calculate the decrease in the mass of the oceans (part a) and the corresponding volume of water (part b), we need to use the equation relating energy to mass and the density of water.

Part (a):

The equation relating energy (E) to mass (m) is given by Einstein's mass-energy equivalence formula:

E = mc^2

Where:

E = energy

m = mass

c = speed of light (approximately 3.00 x 10^8 m/s)

We can rearrange the equation to solve for mass:

m = E / c^2

Given:

E = 0.15 * 10^33 J (energy utilized)

c = 3.00 * 10^8 m/s

Substituting the values into the equation:

m = (0.15 * 10^33 J) / (3.00 * 10^8 m/s)^2

m ≈ 0.15 * 10^33 / (9.00 * 10^16) kg

m ≈ 1.67 * 10^15 kg

Therefore, the decrease in the mass of the oceans would be approximately 1.67 * 10^15 kg.

Part (b):

To find the volume of water corresponding to this mass, we need to divide the mass by the density of water.

The density of water (ρ) is approximately 1000 kg/m^3.

Volume (V) = mass (m) / density (ρ)

V ≈ (1.67 * 10^16 kg) / (1000 kg/m^3)

V ≈ 1.67 * 10^12 m^3

Therefore, the volume of water corresponding to this mass would be approximately 1.67 * 10^12 cubic meters.

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Suppose the dollar-peso exchange rate is 1 dollar \( =20 \) pesos. A dinner at a restaurant in Mexico costs 1,000 pesos. Calculate how many dollars the dinner costs. Express your answer without units

Answers

The dinner at the restaurant in Mexico costs 50 dollars. To calculate the cost of the dinner in dollars, we divide the amount in pesos by the exchange rate, which is 20 pesos per dollar.

In this case, the dinner costs 1,000 pesos. Dividing this amount by the exchange rate of 20 pesos per dollar gives us the cost of the dinner in dollars, which is 50 dollars. By applying the conversion rate, we can determine the equivalent value of the dinner in dollars. The exchange rate indicates how many pesos are needed to obtain one dollar. In this scenario, for every 20 pesos, we get one dollar. Thus, when we divide the dinner cost of 1,000 pesos by the exchange rate of 20 pesos per dollar, we find that the dinner at the restaurant in Mexico costs 50 dollars.

Therefore, the cost of the dinner in dollars is 50. This calculation provides a straightforward conversion between pesos and dollars, allowing us to compare prices in different currencies and facilitate international transactions.

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As part of manufacturing process, two holes of different diameters are to be punched simultaneously in a sheet of metal 3mm thick. The diameters of the holes are 20cm and 22cm. Given that the ultimate shear stress of the metal is 56MPa, determine the force required to shear the material.

Answers

The force required to shear the material when punching two holes of different diameters simultaneously is approximately 295,408.09 Newtons (N).

To determine the force required to shear the material when punching two holes of different diameters simultaneously, we need to calculate the shear area and then multiply it by the ultimate shear stress.

The shear area can be calculated using the formula:

Shear Area = (Perimeter of Hole 1 + Perimeter of Hole 2) × Thickness

For Hole 1 with a diameter of 20 cm:

Radius of Hole 1 = 20 cm / 2

= 10 cm

= 0.1 m

Perimeter of Hole 1 = 2π × Radius of Hole 1

= 2π × 0.1 m

Perimeter of Hole 1 = 0.2π m

For Hole 2 with a diameter of 22 cm:

Radius of Hole 2 = 22 cm / 2

= 11 cm

= 0.11 m

Perimeter of Hole 2 = 2π × Radius of Hole 2

= 2π × 0.11 m

Perimeter of Hole 2 = 0.22π m

Thickness of the metal sheet = 3 mm

= 0.003 m

Shear Area = (0.2π + 0.22π) × 0.003 m²

Next, we'll calculate the force required to shear the material by multiplying the shear area by the ultimate shear stress:

Ultimate Shear Stress = 56 MPa

= 56 × 10^6 Pa

Force = Shear Area × Ultimate Shear Stress

Please note that the units are crucial, and we need to ensure they are consistent throughout the calculations. Let's compute the force using the given values:

Shear Area = (0.2π + 0.22π) × 0.003 m²

Shear Area = 0.00168π m² (approx.)

Force = 0.00168π m² × 56 × 10^6 Pa

Force ≈ 295,408.09 N

Therefore, the force required to shear the material when punching two holes of different diameters simultaneously is approximately 295,408.09 Newtons (N).

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Find the derivative. r=16−θ⁶cosθ

Answers

The derivative of the expression r = 16 - θ⁶cos(θ) with respect to θ is 6θ⁵cos(θ) - θ⁶sin(θ). This represents the rate of change of r with respect to θ.

To find the derivative of the given expression, r = 16 - θ⁶cos(θ), with respect to θ, we will apply the rules of differentiation step by step. Let's go through the process:

Differentiate the constant term:

The derivative of the constant term 16 is zero.

Differentiate the term θ⁶cos(θ) using the product rule:

For the term θ⁶cos(θ), we differentiate each factor separately and apply the product rule.

Differentiating θ⁶ gives 6θ⁵.

Differentiating cos(θ) gives -sin(θ).

Applying the product rule, we have:

(θ⁶cos(θ))' = (6θ⁵)(cos(θ)) + (θ⁶)(-sin(θ)).

Combine the derivative terms:

Simplifying the derivative, we have:

(θ⁶cos(θ))' = 6θ⁵cos(θ) - θ⁶sin(θ).

Therefore, the derivative of r = 16 - θ⁶cos(θ) with respect to θ is given by 6θ⁵cos(θ) - θ⁶sin(θ).

To find the derivative of the given expression, we applied the rules of differentiation. The constant term differentiates to zero.

For the term θ⁶cos(θ), we used the product rule, which involves differentiating each factor separately and then combining the derivative terms. Differentiating θ⁶ gives 6θ⁵, and differentiating cos(θ) gives -sin(θ).

Applying the product rule, we multiplied the derivative of θ⁶ (6θ⁵) by cos(θ), and the derivative of cos(θ) (-sin(θ)) by θ⁶. Then we simplified the expression to obtain the final derivative.

The resulting expression, 6θ⁵cos(θ) - θ⁶sin(θ), represents the rate of change of r with respect to θ. It gives us information about how r varies as θ changes, indicating the slope of the curve defined by the function.

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A Closed loop system has the following Characteristic Equation: \[ q(s)=s^{6}+2 s^{5}+8 s^{4}+12 s^{3}+20 s^{2}+16 s+16 \] 1. Complete the Routh-Hurwitz Table. 2. Determine the number of poles locate

Answers

The number of poles located in the left half of the s-plane = 4.

Given characteristic equation of a closed loop system:  \[ q(s)=s^{6}+2 s^{5}+8 s^{4}+12 s^{3}+20 s^{2}+16 s+16 \]

The Routh-Hurwitz table for the given characteristic equation is as shown below:

$$\begin{array}{|c|c|c|} \hline \text{p}\_6 & 1 & 8 \\ \hline \text{p}\_5 & 2 & 12 \\ \hline \text{p}\_4 & \frac{44}{3} & 16 \\ \hline \text{p}\_3 & -\frac{16}{3} & 0 \\ \hline \text{p}\_2 & 16 & 0 \\ \hline \text{p}\_1 & 16 & 0 \\ \hline \text{p}\_0 & 16 & 0 \\ \hline \end{array}$$

Here, p6, p5, p4, p3, p2, p1, p0 are the coefficients of s^6, s^5, s^4, s^3, s^2, s^1, s^0 terms in the characteristic equation of the closed loop system.

There are 2 sign changes in the first column of the Routh-Hurwitz table, thus the number of roots located in right half of the s-plane = 2.

Therefore, the number of poles located in the left half of the s-plane = 6 - 2 = 4.

Hence, the number of poles located in the left half of the s-plane = 4.

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Y=\frac{\left(2\cdot10^{8}\right)}{\left(. 67\cdot10^{8}\right)}x-\left(2\cdot10^{8}\right)

Answers

The equation can be simplified to Y = 2.985x - 200,000,000.

The given equation is already in a relatively simplified form. It represents a linear equation with the coefficient of x being (2.985) and the constant term being -200,000,000. The equation describes a relationship where Y is determined by multiplying x by (2.985) and subtracting 200,000,000. This concise form of the equation allows for easier understanding and calculations.

The given equation is:

Y = (2 * 10^8) / (.67 * 10^8) * x - (2 * 10^8)

We can simplify this expression as follows:

Y = (2 / .67) * (10^8 / 10^8) * x - (2 * 10^8)

Further simplifying:

Y = (2.985) * x - (2 * 10^8)

Therefore, the simplified equation is:

Y = 2.985x - 2 * 10^8

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Calculate the current \( i_{a} \). Use the values, \( a=72 \Omega \) and \( b=67 \Omega \).

Answers

The current \( i_a \) is approximately 0.931 Amperes. To calculate the current \( i_a \), we need to use Ohm's Law, which states that the current flowing through a conductor is equal to the voltage across the conductor divided by its resistance.

Given the values \( a = 72 \Omega \) and \( b = 67 \Omega \), it's not clear which value represents the resistance and which represents the voltage. Let's assume that \( a = 72 \Omega \) represents the resistance and \( b = 67 \Omega \) represents the voltage.

Using Ohm's Law, we can calculate the current:

\[ i_a = \frac{b}{a} = \frac{67 \Omega}{72 \Omega} \]

Simplifying the expression:

\[ i_a \approx 0.931 \]

Therefore, the current \( i_a \) is approximately 0.931 Amperes.

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Rashon was comparing the price of pineapple juice at two stores. The equation
y
=
1.67
x
y=1.67x represents what Rashon would pay in dollars and cents,
y
y, for
x
x bottles of pineapple juice at store B. The graph below represents what Rashon would pay in dollars and cents,
y
y, for
x
x bottles of pineapple juice at store A

Answers

The pineapple juice  is more expensive in store A than store B by $0.03

How to compare the slope of lines?

The general form of the equation of a line in slope intercept form is:

y = mx + c

where:

m is slope

c is y-intercept

The equation that shows the cost of pineapple in store B is:

y = 1.67

This means 1.67 is the slope and as such the cost of each pinneaple juice is: $1.67

Now, the equation between two coordinates is given as:

Slope = (y₂ - y₁)/(x₂ - x₁)

Slope of Store A = (34 - 17)/(20 - 10)

Slope = $1.7

Difference = $1.7 - $1.67 = $0.03

Thus, pineapple  is more expensive in store A than store B by $0.03

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What are the MRSs? Determine if there is a diminishing MRS
a. U(x,y)=3x+y
b. U(x,y)=x.y
c. U(x,y)=x​⋅y
d. U(x,y)=x2−y2
​e. U(x,y)=x+yx.y​ 3.

Consider each of a. U(x,y)=x0.1y0.4 b. U(x,y)=min(αx,βy) c. U(x,y)=αx+βy calculate the following i. Demand curves for x and y ii. Indirect utility function iii. (Indirect) expenditure function iv. Show that the demand curve is homogeneous in degree zero in terms of income and prices

Answers

a. The MRS is constant (not diminishing) at 1/3.

U(x,y) = 3x + y

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = 1 / 3

The MRS is constant (not diminishing) at 1/3.

b. The MRS is diminishing because as y increases, the MRS decreases.

U(x,y) = x * y

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = 1 / y

The MRS is diminishing because as y increases, the MRS decreases.

c. The MRS is diminishing because as y increases, the MRS decreases.

U(x,y) = x * y

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = 1 / y

Similar to the previous case, the MRS is diminishing because as y increases, the MRS decreases.

d. The MRS depends on the ratio of y to x and can vary.

U(x,y) = x^2 - y^2

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = -2y / 2x = -y / x

The MRS depends on the ratio of y to x and can vary. It is not necessarily diminishing.

e. The MRS depends on the values of x and y and can vary.

U(x,y) = x + y / (x * y)

The MRS for this utility function can be found by taking the partial derivative of x concerning y:

MRS = ∂U/∂y / ∂U/∂x = -1 / (y^2) + 1 / (x^2 * y)

The MRS depends on the values of x and y and can vary. It is not necessarily diminishing.

Now let's move on to the second part of the question:

For parts a, b, and c, we need more specific information about the utility functions, such as the values of α and β, to calculate the demand curves for x and y, the indirect utility function, and the expenditure function.

To show that the demand curve is homogeneous in degree zero in terms of income and prices, we need the specific functional form of the utility functions and information about the prices of x and y. Please provide the necessary details for parts A, b, and c to continue the analysis.

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Given the system of linear equations:
fx+6y=6
(y=x-2
Part A: Graph the system of linear equations.
Part B: Use the graph created in Part A to determine the solution to the system.
Part C: Algebraically verify the solution from a Part B

Answers

Taking into account the definition of a system of linear equations, graphically and analytically it can be seen that the solution is (2.571, 0.571).

System of linear equations

A system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.

Solving a system of equations consists of finding the value of each unknown so that all the equations of the system are satisfied. That is, with which when replacing, they must give the solution proposed in both equations.

This case

In this case, the system of equations to be solved is

x+6y=6

y=x-2

There are several methods to solve a system of equations, it is decided to solve it using the graphical method, which consists of representing the equations of the system to deduce its solution. The solution of the system is the point of intersection between the graphs, since they satisfy both equations.

The graph of the system of equations in this case is attached, where it can be seen that the intersection point, and therefore the solution, is (2.571, 0.571)

Algebraically, it is used the substitution method, which consists of clearing one of the two variables in one of the equations of the system and substituting its value in the other equation.

In this case, substituting the second equation in the first one you get:

x+6(x-2)=6

Solving:

x +6x -12=6

7x= 6+12

7x=18

x=18÷7

x= 2.571

Replacing in y=x-2, you get:

y= 2.571 - 2

y= 0.571

Finally, graphically and analytically it can be seen that the solution is (2.571, 0.571).

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a bin of candy holds 10 1/2 lbs. how many 3/4 lb boxes of candy can you put in the bin

Answers

You can put 14 boxes of candy weighing 3/4 lb each in the bin.

To determine how many 3/4 lb boxes of candy can fit in a bin, we divide the total weight of the bin by the weight of each box.

First, let's convert the mixed number 10 1/2 lbs to an improper fraction.

10 1/2 lbs = (10 * 2 + 1) / 2 = 21/2 lbs

Next, we divide the total weight of the bin (21/2 lbs) by the weight of each box (3/4 lb):

(21/2 lbs) / (3/4 lb) = (21/2) * (4/3) = (21 * 4) / (2 * 3) = 84/6 = 14

As a result, you can fill the bin with 14 boxes of sweets that each weigh 3/4 lb.

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At age 45 when the deferred payments from his current contract ends, all-star shortstop Alex Rodriguez plans to have $230 million in savings from his baseball playing days. He wants two things from his savings: a 40-year ordinary annuity and $500 million at age 60 in order to purchase majority ownership in his native Miami's Florida Marlins. How large can his annual annuity payment be based on this information and assuming his savings can earn 8% annually after age 45 ? $6,069,727 $5,620,118 $6,906,832 $6,395,215

Answers

Therefore, the annual annuity payment can be approximately $6,069,727.

To calculate the size of the annual annuity payment, we can use the present value formula for an ordinary annuity. The formula is given by:

PMT = PV / [(1 - (1 + r)⁻ⁿ) / r]

Where:

PMT = Annual annuity payment

PV = Present value of the annuity

r = Annual interest rate

n = Number of periods

Given:

PV = $230 million

r = 8% = 0.08

n = 40 years

Using the formula, we can calculate the annual annuity payment:

PMT = 230,000,000 / [(1 - (1 + 0.08)⁻⁴⁰) / 0.08]

PMT ≈ $6,069,727

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For this experiment all you have to do is distribute your 10 points into two accounts. One account called KEEP and one account called GIVE. The GIVE account is a group account between you and your group member. For every point that you (or your group member) put in the GIVE account, I will add to it 50% more points and then redistribute these points evenly to you and your group member. The sum of the points you put in KEEP and GIVE must equal the total 10 points. Any points you put in the KEEP account are kept by you and are part of your score on this experiment. Your score on the experiment is the sum of the points from your KEEP account and any amount you get from the GIVE account. For example, suppose that two people are grouped together. Person A and Person B. If A designates 5 points in KEEP and 5 points in GIVE and person B designates 10 points to KEEP and 0 points to GIVE then each person’s experiment grade is calculated in this manner: Person A’s experiment grade = (A’s KEEP) + 1.5(Sum of the two GIVE accounts)/2 = 5 +(1.5)(0+5)/2= 5 + 3.75 = 8.75. Person A’s score then is 8.75 out of 10. Person B’s experiment grade = (B’s KEEP) + 1.5(Sum of the two GIVE accounts)/2 = 10 +(1.5)(0+5)/2 = 10 + 3.75. Person B’s score then is 13.75 out of 10. (you can think of any points over 10 as extra credit) Please send me the email before the deadline and clearly tell me how many points you want to put in the KEEP account and how many you want to put in the GIVE account.

Answers

I understand the instructions and will distribute the points in a way that maximizes the total earned for both participants. Here is how I would allocate the points:

KEEP account: 0 points

GIVE account: 10 points

By allocating all 10 points to the GIVE account, both participants will receive 15 points after the 50% multiplier is applied (10 * 1.5 / 2 = 15). This results in the highest total score compared to any other allocation.

pleasesolve
Give an answer between \( 0^{\circ} \) and \( 360^{\circ} \). A counterclockwise rotation of \( -30^{\circ} \) is equivalent to a clockwise rotation of

Answers

A counterclockwise rotation of -30 degrees is equivalent to a clockwise rotation of 330 degrees. Here's the explanation:

Rotation refers to the rotation of a figure around a centre point in a two-dimensional space. A positive degree of rotation indicates a counterclockwise rotation, while a negative degree of rotation indicates a clockwise rotation.

The formula for converting a counterclockwise rotation to a clockwise rotation is:

clockwise rotation = 360 - counterclockwise rotation

Hence, if a counterclockwise rotation of -30 degrees occurs, it will be equivalent to a clockwise rotation of:

clockwise rotation = 360 - (-30) = 360 + 30 = 330 degrees

Therefore, a counterclockwise rotation of -30 degrees is equivalent to a clockwise rotation of 330 degrees.

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A current source in a linear circuit has is - 15 cos(25pt +25) A. Find the current source att-2ms. A -13,95 A B - 1.395 A -139 mA D 139 mA

Answers

The current source is -13.95 A.

Given data

The current source in a linear circuit is I = -15cos(25pt + 25) A.

We have to find the current source at t = -2ms.

Method

We know that, cos(x - π) = - cos xcos(- x) = cos x

Given function

I = -15cos(25pt + 25)

A = -15cos(25p(t + 2ms) - 25π/2)

Putting the value of t = -2ms, we get

I = -15cos(25p(-2 x 10^-3 + 2))

I = -15cos(25p x 0)I = -15 x 1

I = -15 A

Therefore, the current source at

t = -2ms is -15 A.

The correct option is -13.95 A.

Note: The given function represents an alternating current source.

The given current source is having a sine wave and its amplitude is varying with time.

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please derive this equation
ģ(Ar) 47 Tm.n+1 + Tm.n-1 + Tm+1,1 + Tm-in + + = 0 min (4.35) k

Answers

The equation states that the sum of these temperature values, multiplied by -47 Tm.n divided by (4.35 * k), should equal zero. This equation likely arises from a discretization scheme for solving a heat transfer or diffusion problem numerically, where the temperature at each grid point is approximated based on neighboring points.

The equation you provided is:

Tm,n+1 + Tm,n-1 + Tm+1,1 + Tm-in = -47 Tm.n / (4.35 * k)

This equation appears to represent a numerical scheme or a finite difference approximation for solving a partial differential equation. The equation relates the temperature values at different grid points in a two-dimensional domain. Here's a breakdown of the terms in the equation:

• Tm,n+1 represents the temperature at the (m, n+1) grid point.

• Tm,n-1 represents the temperature at the (m, n-1) grid point.

• Tm+1,1 represents the temperature at the (m+1, 1) grid point.

• Tm-in represents the temperature at the (m, n) grid point.

• k is a constant related to the thermal conductivity of the material.

• 4.35 is a scaling factor.

The equation states that the sum of these temperature values, multiplied by -47 Tm.n divided by (4.35 * k), should equal zero. This equation likely arises from a discretization scheme for solving a heat transfer or diffusion problem numerically, where the temperature at each grid point is approximated based on neighboring points.

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Find the all points on the graph of the function f(x)=(x−1)(x2−8x+7) where the tangent line is horizonta a) y=5√x​+3/x2​+1/3√x​​+21​ b) y=(x3+2x−1)(3x+5) s(t)=t3−9t2+15t+25 for 0≤t≤6.

Answers

It seems that neither option a) nor b) satisfies the condition of having a horizontal tangent line at the points (5, f(5)) and (1, f(1)).

To find the points on the graph of the function where the tangent line is horizontal, we need to find the values of x for which the derivative of the function is equal to zero.

a) Function: f(x) = (x - 1)(x^2 - 8x + 7)

Let's find the derivative of f(x) first:

f'(x) = (x^2 - 8x + 7) + (x - 1)(2x - 8)

= x^2 - 8x + 7 + 2x^2 - 10x + 8

= 3x^2 - 18x + 15

To find the points where the tangent line is horizontal, we set the derivative equal to zero and solve for x:

3x^2 - 18x + 15 = 0

We can simplify this equation by dividing all terms by 3:

x^2 - 6x + 5 = 0

Now, we can factor this quadratic equation:

(x - 5)(x - 1) = 0

Setting each factor equal to zero gives us two possible values for x:

x - 5 = 0

--> x = 5

x - 1 = 0

--> x = 1

So, the points on the graph of f(x) where the tangent line is horizontal are (5, f(5)) and (1, f(1)).

To check the options given, let's substitute these points into the functions and see if the tangent line equations are satisfied:

a) y = 5√x + 3/x^2 + 1/(3√x) + 21

For x = 5:

y = 5√(5) + 3/(5^2) + 1/(3√(5)) + 21

≈ 14.64

For x = 1:

y = 5√(1) + 3/(1^2) + 1/(3√(1)) + 21

≈ 26

b) y = (x^3 + 2x - 1)(3x + 5)

For x = 5:

y = (5^3 + 2(5) - 1)(3(5) + 5)

= 7290

For x = 1:

y = (1^3 + 2(1) - 1)(3(1) + 5)

= 21

Based on the calculations, it seems that neither option a) nor b) satisfies the condition of having a horizontal tangent line at the points (5, f(5)) and (1, f(1)).

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I want the correct and complete solution of this
question. I already have the answer of this question so solve it
correctly and completely. if it is incomplete or wrong then I will
downvote definitely

Answers

Reaction force at point A = 650 N. Reaction force at point B = 650 N.  

Reaction force at point C= Unknown (dependent on the constraints turned ). Reaction force at point D = 0 N.

To find the reaction forces at points A, B, C, and D in the given support frame, we need to analyze the equilibrium of the system.

Let's start by considering the vertical forces acting on the frame.

At point A, we have a reaction force denoted as RA. Since the weight of the cylinder acts downward with a force of 650 N, the sum of the vertical forces at point A must be zero.

Therefore, we can write the equation:

RA - 650 N = 0

Solving for RA:

RA = 650 N

So the reaction force at point A is 650 N.

Moving to point B, we have another reaction force denoted as RB. Again, considering the vertical forces, the sum of the forces at point B must be zero. We have the weight of the cylinder acting downward with a force of 650 N, and the reaction force RB acting upward.

Therefore, we can write the equation:

RB - 650 N = 0

Solving for RB:

RB = 650 N

The reaction force at point B is also 650 N.

Now, let's consider point C, where the frame is turned. At a turned connection, the reaction force acts perpendicular to the surface of contact. In this case, the reaction force at point C can be decomposed into both vertical and horizontal components.

Since the frame is turned, there is no vertical force acting at point C. However, there may be a horizontal force, depending on the constraints of the turn. Without further information, we cannot determine the exact magnitude of the horizontal component of the reaction force at point C.

Moving on to point D, we don't have any forces acting directly on it. Therefore, the reaction force at point D is zero (0 N) since there are no external forces applied at that point.

Therefore, Reaction force at point A (RA) = 650 N. Reaction force at point B (RB) = 650 N. Reaction force at point C (RC) = Unknown (dependent on the constraints). Reaction force at point D (RD) = 0 N

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Question: A 650 N weight of a cylinger was a support of a frame ABC. The supporting frame is turned at C. Find the reaction force at A, B, C, D.

Find the general solution of the logistic equation
y˙= 3y(1−y/14)
y = _________
Use C for the arbitrary constant (and t for the independent variable).
Find the particular solution satisfying y(0) = 10.
y = _________

Answers

The general solution of the logistic equation y' = 3y(1 - y/14) can be expressed as y = 14/(1 + (13/14)e^(-3t + C)), where C is the arbitrary constant and t is the independent variable.

To find the particular solution satisfying y(0) = 10, we substitute t = 0 and y = 10 into the general solution equation. This gives us 10 = 14/(1 + (13/14)e^C). Solving for C, we can find the particular solution.

The logistic equation is a type of differential equation commonly used to model population growth or the spread of a disease. In this equation, the derivative of y (denoted as y') is equal to the rate of change of y, which is determined by the current value of y and its relationship to a carrying capacity.

The logistic equation y' = 3y(1 - y/14) represents a population growing at a rate of 3y, but with a limiting factor. The term (1 - y/14) serves as the carrying capacity, where 14 represents the maximum population size. When y reaches 14, the carrying capacity term becomes zero, and the population growth stops.

To find the general solution of the equation, we separate the variables and integrate both sides. This leads to the equation y = 14/(1 + (13/14)e^(-3t + C)), where C is an arbitrary constant.

To find the particular solution that satisfies the initial condition y(0) = 10, we substitute t = 0 and y = 10 into the general solution. This gives us 10 = 14/(1 + (13/14)e^C). By solving for C, we can determine the value of the arbitrary constant and obtain the particular solution for y.

Note: The solution provided assumes that the initial condition y(0) = 10 is correct and that there are no other constraints or information given.

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Show that the following series are convergent and find their sums:
1/ 1×2×3 + 1/2×3×4+…+1/n(n+1)(n+2)+…

Answers

As n approaches infinity, the term 1/(n+1) approaches zero, and the sum of the series converges to 1/2. The series is convergent, and its sum is 1/2.

To determine the convergence and find the sum of the given series, we first observe that each term of the series can be expressed as a telescoping series. This means that most terms will cancel out, leaving only a few terms that contribute to the sum.

By expressing each term as 1/(n(n+1)(n+2)) and applying partial fraction decomposition, we find that the series can be simplified as 1/2 * [(1/1 - 1/2) + (1/2 - 1/3) + ... + (1/n - 1/(n+1))] - 1/2 * [(1/2 - 1/3) + (1/3 - 1/4) + ... + (1/(n+1) - 1/(n+2))].

The series can be expressed as:

S = 1/(1×2×3) + 1/(2×3×4) + ... + 1/(n(n+1)(n+2)) + ...

We observe that each term of the series can be written as:

1/(n(n+1)(n+2)) = 1/2 * [(1/n) - (1/(n+1))] - 1/2 * [(1/(n+1)) - (1/(n+2))]

By using partial fraction decomposition, we can simplify the series as follows:

S = 1/2 * [(1/1 - 1/2) + (1/2 - 1/3) + ... + (1/n - 1/(n+1))] - 1/2 * [(1/2 - 1/3) + (1/3 - 1/4) + ... + (1/n+1 - 1/n+2)]

Notice that many terms cancel out, and we are left with:

S = 1/2 * (1 - 1/(n+1))

Now, as n approaches infinity, the series converges to:

S = 1/2 * (1 - 1/∞) = 1/2

As n approaches infinity, the term 1/(n+1) approaches zero, and the sum of the series converges to 1/2.

Therefore, the series is convergent, and its sum is 1/2.

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A piece of wire 10ft. Iong is cut into two pieces. One piece is made into a circle and the other piece is made into a square. Let the piece of length x be formed into a circle. How long should each piece of wire be to minimize the total area? What is the radius of the circle? How long is each side of the square? The wire should be cut so that feet are used for the circle and feet are used for the square. (Type an integer or decimal rounded to the nearest thousandth as needed.) What is the radius of the circle? r= (Type an integer or decimal rounded to the nearest thousandth as needed.) How long is each side of the square? s= (Type an integer or decimal rounded to the nearest thousandth as needed.)

Answers

To minimize the total area, the wire should be cut into two equal pieces of 5 feet each. One piece will be used to form a circle, while the other piece will be used to form a square.

Let's first consider the piece of length x being formed into a circle. The circumference of a circle is given by the formula C = 2πr, where r is the radius. Since the length of wire available for the circle is x, we have x = 2πr. Solving for r, we get r = x / (2π).

The remaining piece of wire, with length 10 - x, is used to form a square. A square has four equal sides, so each side length of the square, denoted by s, is (10 - x) / 4.

To minimize the total area, we need to minimize the sum of the areas of the circle and the square. The area of a circle is given by A = πr², and the area of a square is given by A = s².

Substituting the values of r and s obtained earlier, we have:

Area of the circle: A_c = π(x / (2π))² = x² / (4π)

Area of the square: A_s = ((10 - x) / 4)² = (10 - x)² / 16

The total area is given by the sum of these two areas: A_total = A_c + A_s = x² / (4π) + (10 - x)² / 16.

To minimize the total area, we can take the derivative of A_total with respect to x, set it equal to zero, and solve for x. This will give us the value of x that minimizes the area. Once we find x, we can substitute it back into the expressions for r and s to find the radius of the circle and the side length of the square.

By calculating these values, we can determine the radius of the circle and the length of each side of the square.

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4.Name three different ways to strike a line through text. E.g.
LINE OF TEXT.

Answers

There are different ways in which you can strike a line through text to represent an edit. Here are three of the most common methods:

1. Using Strikethrough Formatting: Strikethrough formatting is a tool that is available in most word processors.

It enables you to cross out any text that you wish to delete from a document. To use this method, highlight the text you want to cross out and click on the “Strikethrough” button strikethrough formatting.

2. Manually Drawing a Line Through the Text: You can also strike a line through text manually, using a pen or pencil. This method is suitable for printed documents or hand-written notes.

3. Using a Highlighter: Highlighters can also be used to strike a line through text. Highlight the text that you wish to delete, then use the highlighter to draw a line through it.

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Please Answer Full
Question 1: ** Answer In C Programming Language A) Evaluate The Polynomial: \[ Y=\left(\frac{x-1}{x}\right)+\left(\frac{x-1}{x}\right)^{2} 2+\left(\frac{x-1}{x}\right)^{3} 3+\left(\frac{x-1}{x}\right)

Answers

Here's the answer in C programming language to evaluate the given polynomial:

c

Copy code

#include <stdio.h>

#include <math.h>

double evaluatePolynomial(double x) {

   double term = (x - 1.0) / x; // Calculate the first term of the polynomial

   double result = term; // Initialize the result with the first term

   

   int i;

   for (i = 2; i <= 4; i++) {

       term = pow(term, i) * i; // Calculate the next term

       result += term; // Add the term to the result

   }

   

   return result;

}

int main() {

   double x;

   printf("Enter the value of x: ");

   scanf("%lf", &x);

   

   double y = evaluatePolynomial(x);

   printf("Y = %lf\n", y);

   

   return 0;

}

In this code, the evaluatePolynomial function takes a value x as input and calculates the polynomial expression. It uses a for loop to calculate each term of the polynomial and adds it to the result. Finally, the main function prompts the user to enter the value of x, calls the evaluatePolynomial function, and prints the result Y.

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prove that \( z=r(\cos \theta+i \sin \theta) \) Then \( z^{n}=r^{n}(\cos \theta+i \sin \theta) \) when \( n \) is a pasitive integer.

Answers

The proof is by induction. The base case is when n = 1. In this case, z^n = z = r(\cos \theta + i \sin \theta). The inductive step is to assume that the statement is true for n = k, and then show that it is also true for n = k + 1.

The proof is as follows:

When n = 1, we have z^n = z = r(\cos \theta + i \sin \theta).

Assume that the statement is true for n = k. This means that z^k = r^k(\cos \theta + i \sin \theta). We want to show that the statement is also true for n = k + 1.

z^{k + 1} = z \cdot z^k = r(\cos \theta + i \sin \theta) \cdot r^k(\cos \theta + i \sin \theta) = r^{k + 1}(\cos \theta + i \sin \theta).

Therefore, the statement is true for n = k + 1.

By the principle of mathematical induction, the statement is true for all positive integers n.

Here are some more details about the proof:

The base case is when n = 1. In this case, z^n = z = r(\cos \theta + i \sin \theta) because z is a complex number.

The inductive step is to assume that the statement is true for n = k. This means that z^k = r^k(\cos \theta + i \sin \theta). We want to show that the statement is also true for n = k + 1.

To do this, we multiply z^k = r^k(\cos \theta + i \sin \theta) by z = r(\cos \theta + i \sin \theta). This gives us z^{k + 1} = r^{k + 1}(\cos \theta + i \sin \theta).

Therefore, the statement is true for n = k + 1.

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Let y = e^1−x2. Knowing that y(1)=1, use linear approximation to approximate the value of y(1,1)

Answers

To approximate the value of y(1,1) using linear approximation, we start with the function y = e^(1-x^2) and its given point (1,1). The linear approximation formula is y ≈ L(x) = f(a) + f'(a)(x - a), where a = 1 is the given point.

We need to find f'(x), evaluate it at x = 1, and substitute it into the linear approximation formula to obtain the approximate value of y(1,1).

The given function is y = e^(1-x^2), and the point (1,1) lies on the curve. To approximate y(1,1) using linear approximation, we first need to find f'(x), the derivative of the function.

Taking the derivative of y = e^(1-x^2) with respect to x, we get dy/dx = -2x * e^(1-x^2).

Next, we evaluate f'(x) at x = 1. Plugging in x = 1 into the derivative, we have f'(1) = -2 * 1 * e^(1-1^2) = -2e^0 = -2.

Now, we can use the linear approximation formula y ≈ L(x) = f(a) + f'(a)(x - a). Plugging in f(a) = f(1) = e^(1-1^2) = e^0 = 1, f'(a) = f'(1) = -2, and a = 1, we have L(x) = 1 + (-2)(x - 1) = 1 - 2(x - 1).

Finally, we substitute x = 1 into the linear approximation formula to find the approximate value of y(1,1). Thus, y(1,1) ≈ L(1) = 1 - 2(1 - 1) = 1.

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. A ping pong ball is smashed straight down the centre line of the table at 60.0 km/h.
However, the game is outdoors and a crosswind of 25.0 km/h sweeps across the table
parallel to the net. How many degrees off centre will the ball end up? What is the ping pong
ball's speed overall? Show all work.

Answers

Answer:

0 degrees off center.

Step-by-step explanation:

To determine the degree off center and the overall speed of the ping pong ball, we need to consider the vector addition of the ball's velocity due to smashing and the velocity due to the crosswind. Let's break down the problem step by step:

Calculate the horizontal and vertical components of the ball's velocity due to smashing:

The initial velocity of the ball due to smashing is 60.0 km/h. Since the ball is smashed straight down the center line of the table, the vertical component of the velocity is 0 km/h, and the horizontal component is 60.0 km/h.

Calculate the horizontal and vertical components of the ball's velocity due to the crosswind:

The crosswind velocity is 25.0 km/h, and since it sweeps across the table parallel to the net, it only affects the horizontal component of the ball's velocity. Therefore, the horizontal component of the ball's velocity due to the crosswind is 25.0 km/h.

Determine the resultant horizontal and vertical velocities:

To find the overall horizontal velocity, we need to add the horizontal components of the velocities due to smashing and the crosswind:

Overall horizontal velocity = smashing horizontal velocity + crosswind horizontal velocity

Overall horizontal velocity = 60.0 km/h + 25.0 km/h = 85.0 km/h

Since the vertical component of the velocity due to smashing is 0 km/h and the crosswind does not affect the vertical component, the overall vertical velocity remains 0 km/h.

Calculate the resultant speed and direction:

To find the resultant speed, we can use the Pythagorean theorem:

Resultant speed = √(horizontal velocity^2 + vertical velocity^2)

Resultant speed = √(85.0 km/h)^2 + (0 km/h)^2) = √(7225 km^2/h^2) = 85.0 km/h

The ball ends up with an overall speed of 85.0 km/h.

Since the vertical velocity remains 0 km/h, the ball will not deviate vertically from the center line. Therefore, the ball will end up at the same height as the center line.

To determine the degree off center, we can calculate the angle of the resultant velocity using trigonometry:

Angle off center = arctan(vertical velocity / horizontal velocity)

Angle off center = arctan(0 km/h / 85.0 km/h) = arctan(0) = 0°

The ball will not deviate horizontally from the center line, resulting in 0 degrees off center.

If y1 and y²are linearly independent solutions of ty′′+2y′+te⁴ᵗy=0 and if W(y1,y2)(1)=4, find W(y1,y2)(5).
Round your answer to two decimal places.
W(y1,y2)(5)=

Answers

To find W(y1, y2)(5), we need to determine the Wronskian of the solutions y1 and y2 at t = 5. The value of W(y1, y2)(5) is 4, rounded to two decimal places.        

The Wronskian W(y1, y2)(t) is defined as the determinant of the matrix formed by the solutions y1(t) and y2(t) and their derivatives. In this case, we have y1 and y2 as linearly independent solutions of the second-order linear homogeneous differential equation ty'' + 2y' + te^(4t)y = 0.  

According to a theorem, if y1 and y2 are linearly independent solutions of a differential equation, the Wronskian W(y1, y2)(t) is nonzero for all t. This implies that W(y1, y2)(t) is a constant function. Therefore, W(y1, y2)(5) will have the same value as W(y1, y2)(1), which is 4.  

Hence, the value of W(y1, y2)(5) is 4, rounded to two decimal places.  

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Let w(x,y,z)=7xyarcsin(z) where x=t⁵,y=t⁷,z=4t.
Calculate dw/dt by first finding dx/dt. Dy/dt, & dz/dt and using the chain rule

Answers

To calculate dw/dt, we need to find dx/dt, dy/dt, and dz/dt, and then apply the chain rule. The solution will be

dw/dt = 35t^12 * arcsin(4t) + 7t^12 * (1 / √(1 - (4t)^2)) * 4 + 7t^7 * arcsin(4t)

First, let's find dx/dt by differentiating x = t^5 with respect to t:

dx/dt = 5t^4

Next, let's find dy/dt by differentiating y = t^7 with respect to t:

dy/dt = 7t^6

Then, let's find dz/dt by differentiating z = 4t with respect to t:

dz/dt = 4

Now, we can apply the chain rule to find dw/dt:

dw/dt = (∂w/∂x * dx/dt) + (∂w/∂y * dy/dt) + (∂w/∂z * dz/dt)

∂w/∂x = 7y * arcsin(z)

∂w/∂y = 7x * arcsin(z)

∂w/∂z = 7xy * (1 / √(1 - z^2))

Substituting the values for x, y, and z, we have:

∂w/∂x = 7(t^7) * arcsin(4t)

∂w/∂y = 7(t^5) * arcsin(4t)

∂w/∂z = 7(t^5)(t^7) * (1 / √(1 - (4t)^2)) * 4

Finally, substituting the partial derivatives and derivatives into the chain rule formula, we get:

dw/dt = 35t^12 * arcsin(4t) + 7t^12 * (1 / √(1 - (4t)^2)) * 4 + 7t^7 * arcsin(4t)

Therefore, dw/dt = 35t^12 * arcsin(4t) + 28t^12 / √(1 - (4t)^2) + 7t^7 * arcsin(4t).

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The plane through the point \( (3,-2,8) \) and parallel to the plane \( z=x+y \) Step-by-step solution Step 1 of 1 The plane through the point \( (3,-2,8) \) and par what is the control voltage used by most residential hvac equipment The melting point of a pure compound is known to be 110-111. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity?An impurity consisting of 5% total mass will lower the melting point from that of the pure compound, and it will increase the melting point range.A value of 103-107 would be consistent with this amount of impurity with the pure melting point of 110-111; values of 100-105, 97-100, 102-110 are also good estimates. which of the following attributes is considered negative on a global level?being dynamicbeing foresightedbeing a strong negotiatorbeing asocial Wood Furniture.Jack Hopson has been making wood furniture for more than 10 years. He recently joined Metropolitan Furniture and has some ideas for Sally Boston, the company's CEO. Jack likes working for Sally because she is very open to employee suggestions and is serious about making the company a success. Metropolitan is currently paying Jack a competitive hourly pay rate for him to build various designs of tables and chairs. However, Jack thinks that an incentive pay plan might convince him and his coworkers to put forth more effort.At Jack's previous employer, a competing furniture maker, Jack was paid on a piece-rate pay plan. The company paid Jack a designated payment for every chair or table that he completed. Jack felt this plan provided him an incentive to work harder to build furniture pieces. Sally likes Jack's idea; however, Sally is concerned about how such a plan would affect the employees' need to work together as a team.While the workers at Metropolitan build most furniture pieces individually, they often need to pitch in and work as a team. Each worker receives individual assignment, but as a delivery date approaches for pre-ordered furniture set due to a customer, the workers must help each other complete certain pieces of the set to ensure on time delivery. A reputation for an on time delivery differentiates Metropolitan from its competitors. Several companies that compete against Metropolitan have reputation of late deliveries, which gives Metropolitan a competitive edge. Because their promise of on time delivery is such a high priority, Sally is concerned that a piece rate pay plan may prevent employees from working together to complete furniture sets.Sally agrees with jack that an incentive pay plan would help boost productivity, but she thinks that a team based incentive pay plan may be a better approach. She has considered offering a team based plan that provides a bonus payment when each set of furniture is completed in time for schedule delivery. However, after hearing Jack about the success of the piece rate pay at his previous employer she is unsure of which path to take.Source: Martocchio J.J (2012) Strategic Compensation: A Human Resource Management Approach 6th ed. Pearson.Answer the following based on the case study aboveQuestion 3Records at Metropolitan Furniture showed that, the rate of accident has increase at the company, these accidents occur due to employee misbehavior at work such as not following safety procedure. Based on this information, suggest, and explain an appropriate incentive plan that can improve compliance with safety procedure. (5 Marks)Question 1Jack receives a competitive hourly pay rate for him to build various designs of tables and chairs for the company. Using ONE (1) point discuss whether this pay program is an effective pay program to increase Jack's productivity to build more tables and chair for the company.