Find the cosine of ∠G. Simplify your answer and write it as a proper fraction, improper fraction, or whole number. Help please ASAP.

Find The Cosine Of G. Simplify Your Answer And Write It As A Proper Fraction, Improper Fraction, Or Whole

Answers

Answer 1

The cosine of angle G can be written as:

cos(G) = 3/5

How to find the cosine of angle G?

Remember that for a right triangle, the cosine of one angle is given by the trigonometric relation:

cos(G) = (adjacent cathetus)/(hypotenuse)

In this diagram, we can see that the measures are:

adjacent cathetus = 3

hypotenuse = 5

Then the cosine of angle G is:

cos(G) = 3/5

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Related Questions

Lesley goes by train to the theatre. The normal price of the train ticket is £34. 65 Lesley has a railcard. She gets 1/3 off the price of her train ticket. How much does Lesley pay for her train ticket?

Answers

Answer:

£23.10

Step-by-step explanation:

If she has 1/3 off, she pays for 2/3 of the ticket price.

34.65 × 2/3 = 23.10

Draw the graph of a polynomial that has zeros at x=−1 with multiplicity 1 , and x=2 with multiplicity 1 , and x=1 with multiplicity 2 . Then give an equation for the polynomial. What is the degree of this polynomial?

Answers

The equation for the polynomial is f(x) = (x³ - 3x² + 3x - 2)(x - 1)². The degree of the polynomial is 3.

To draw the graph of a polynomial with zeros at x = -1 with multiplicity 1, x = 2 with multiplicity 1, and x = 1 with multiplicity 2, we can start by identifying the x-intercepts and their multiplicities.

The zero at x = -1 with multiplicity 1 means that the graph will touch or cross the x-axis at x = -1. The zero at x = 2 with multiplicity 1 also indicates that the graph will touch or cross the x-axis at x = 2. Finally, the zero at x = 1 with multiplicity 2 means that the graph will touch or cross the x-axis at x = 1, but it will have a "bouncing" behavior at this point due to the multiplicity of 2.

Based on this information, the graph will have three x-intercepts: -1, 2, and 1 (with a bouncing behavior).

To find an equation for the polynomial, we can use the factored form of a polynomial. Since the zeros are given, we can express the polynomial as the product of its linear factors

f(x) = (x + 1)(x - 2)(x - 1)(x - 1)

Expanding this equation, we get

f(x) = (x² - x - 2)(x - 1)²

Simplifying further, we have

f(x) = (x³ - 3x² + 3x - 2)(x - 1)²

This is an equation for the polynomial with the given zeros and their multiplicities.

To determine the degree of the polynomial, we look at the highest power of x in the equation. In this case, the highest power is x³, so the degree of the polynomial is 3.

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A highly volatile substance initially has a mass of 1200 g and its mass is reduced by 12% each second. 1 Write a formula that gives the mass of the substance (m) at time (t) seconds. 2 Rearrange this formula to make t the subject. 3 What mass remains after 10 seconds, correct to two decimal places? 4 Calculate how long (to the nearest second) it takes until the mass is 10 grams. 5 After how many seconds (to the nearest second) is the mass less than 1 gram?

Answers

1. The mass of the substance decreases by 12% per second according to the formula m(t) = 1200 * (0.88)^t.

2. Rearranging the formula gives t = log(m(t) / 1200) / log(0.88).

3. Substituting t = 10 into the formula, we can find the mass remaining after 10 seconds.

4. Setting m(t) = 10 allows us to calculate the time it takes for the mass to reach 10 grams.

5. By setting m(t) < 1, we can determine the time at which the mass becomes less than 1 gram.

1. The formula that gives the mass of the substance (m) at time (t) seconds can be expressed as:

m(t) = 1200 * (0.88)^t

2. To rearrange the formula and make t the subject, we can take the logarithm of both sides:

m(t) = 1200 * (0.88)^t

t = log( m(t) / 1200 ) / log(0.88)

3. To find the mass remaining after 10 seconds, we substitute t = 10 into the formula:

m(t) = 1200 * (0.88)^t

m(10) = 1200 * (0.88)^10

4. To calculate how long it takes until the mass is 10 grams, we set m(t) = 10 and solve for t:

m(t) = 1200 * (0.88)^t

10 = 1200 * (0.88)^t

5. To find the number of seconds when the mass is less than 1 gram, we set m(t) < 1 and solve for t:

1 > 1200 * (0.88)^t

Please note that the calculations in steps 3, 4, and 5 require numerical calculations.

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Please answer a and b in detail
Prove each, where a, b, c, and n are arbitrary positive integers, and p any prime. (a) ged(a, b) = gcd(a, b). (b) If pła, then p and a are relatively prime.

Answers

(a) gcd(a, b) = gcd(a, b) holds true because they represent the same greatest common divisor of a and b.

(b) If p | a, then p and a are relatively prime, as they have no common divisors other than 1.

(a) To prove that gcd(a, b) = gcd(a, b), we need to show that both values represent the same greatest common divisor of a and b.

Let's start with the definition of the greatest common divisor (gcd): The gcd of two integers is the largest positive integer that divides both numbers without leaving a remainder.

Now, let's consider gcd(a, b). This represents the largest positive integer that divides both a and b without leaving a remainder. In other words, any common divisor of a and b must also divide gcd(a, b).

Now, let's consider gcd(a, b). This represents the largest positive integer that divides both a and b without leaving a remainder. In other words, any common divisor of a and b must also divide gcd(a, b).

Since both gcd(a, b) and gcd(a, b) are defined as the largest positive integer that divides both a and b without leaving a remainder, they represent the same value. Therefore, gcd(a, b) = gcd(a, b), and statement (a) is proven.

(b) To prove that if p | a, then p and a are relatively prime, we need to show that p and a do not have any common divisors other than 1.

Let's assume that p | a, which means p is a divisor of a. Since p is a prime number, its only divisors are 1 and p itself. Therefore, any common divisor of p and a must also divide p.

If a common divisor d divides both p and a, it must be a divisor of p. Since p is a prime number, the only positive divisors of p are 1 and p itself. Therefore, the only common divisor of p and a is 1.

Since p and a have only 1 as their common divisor, they are relatively prime (or coprime). Therefore, statement (b) is proven.

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For the transition matrix P=[ 0.8
0.3
0.2
0.7
], solve the equation SP=S to find the stationary matrix S and the limiting matrix P
ˉ
.

Answers

To solve the equation SP = S for the transition matrix P, we need to find the stationary matrix S and the limiting matrix P.

Let's denote S as the stationary matrix:

S = [s1

s2

s3

s4]

Now, we can rewrite the equation SP = S as:

[ 0.8 0.3 ] [ s1 ] [ s1 ]

[ 0.2 0.7 ] * [ s2 ] = [ s2 ]

[ s3 ]

[ s4 ]

Multiplying the matrices, we get:

[ 0.8s1 + 0.3s2 ] = [ s1 ]

[ 0.2s1 + 0.7s2 ] [ s2 ]

From this system of equations, we can solve for s1 and s2:

0.8s1 + 0.3s2 = s1

0.2s1 + 0.7s2 = s2

Simplifying, we have:

0.3s2 = 0.2s1 (equation 1)

0.7s2 = s2 (equation 2)

From equation 2, we can see that s2 = 0.

Substituting s2 = 0 into equation 1, we have:

0 = 0.2s1

This implies that s1 can take any value.

Therefore, the stationary matrix S is:

S = [ s1

0

s3

s4 ]

The limiting matrix P is the same as the transition matrix P:

P = [ 0.8

0.3

0.2

0.7 ]

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(c) Compute f. (1,-2) to the surface z = 4x³y² + 2y.

Answers

Therefore, the value of f at the point (1,-2) to the surface z = 4x³y² + 2y is 12.

Given a surface: z = 4x³y² + 2y.

The function f is defined as follows: f(x, y) = 4x³y² + 2y.

(c) Compute f. (1,-2) to the surface z = 4x³y² + 2y.

Given, the point (1, -2).

To compute f, we need to find the value of z for x = 1 and y = -2

by substituting these values in the given equation of the surface.

z = 4x³y² + 2y

Putting x = 1 and y = -2, we get

z = 4(1)³(-2)² + 2(-2)

z = 16 + (-4)z = 12

Hence, option (b) is the correct answer.

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Question 1. [30 marks] Engineers are involved in making products and developing processes. Despite many benefits, such products and processes may have consequences for the society. List and briefly explain four examples of wrong engineering designs that may result in consequences for the society. Write the answers in your own words. [10 marks for listing examples of wrong engineering designs, 5 marks for explaining each wrong engineering design]

Answers

These result in accidents, health risks, disruptions, and environmental impacts, highlighting the importance of careful engineering practices.

Inadequate safety measures in buildings: This refers to designs that overlook essential safety features, such as fire protection systems, structural integrity, or evacuation plans. It can lead to increased risks of accidents, injuries, or even fatalities in case of emergencies.

Faulty medical devices: When medical devices are poorly designed or manufactured, they can malfunction or fail to perform their intended functions. This can jeopardize patient safety, delay or compromise medical treatments, and result in adverse health outcomes.

Unreliable transportation systems: Transportation systems that suffer from poor design or maintenance can lead to frequent breakdowns, delays, and accidents. Unreliable systems disrupt daily commutes, hinder productivity, and pose risks to public safety.

Inefficient energy systems: Energy systems that are inefficient or outdated contribute to environmental pollution, resource depletion, and increased energy consumption. Such designs fail to harness renewable energy sources, promote sustainability, and minimize negative impacts on the environment.

These examples illustrate the significance of thorough engineering design, considering safety, functionality, reliability, and sustainability. Engineering practices must prioritize the well-being of society by incorporating robust safety measures, rigorous testing protocols, and continuous improvement processes to avoid adverse consequences and ensure the overall benefit of the community.

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A slurry of flaked soya beans consists of 100 kg inert solids suspended in 25 kg of a 10 wt% solution of oil in hexane. This slurry is contacted with 100 kg pure hexane in a single stage operation. The underflow from this stage contains 2kg solution for every 3kg insoluble solids present. Graphically represent the Single stage leaching process. (1) (ii) Estimate the Amounts and Composition of the Underflow and Overflow leaving the stage.

Answers

The single stage leaching process involves the contact of a slurry of flaked soya beans with pure hexane. The slurry consists of 100 kg of inert solids suspended in 25 kg of a 10 wt% solution of oil in hexane. The goal is to estimate the amounts and composition of the underflow and overflow leaving the stage.

To graphically represent the single stage leaching process, we can use a diagram. The diagram should show the input of the slurry and the pure hexane, as well as the output of the underflow and overflow.

Now, let's estimate the amounts and composition of the underflow and overflow leaving the stage.

First, we need to calculate the amount of hexane in the slurry. Since the slurry consists of 100 kg of inert solids and 25 kg of a 10 wt% solution of oil in hexane, the amount of hexane in the slurry is 25 kg x 0.10 = 2.5 kg.

Next, we need to calculate the amount of hexane in the pure hexane input. The pure hexane input is 100 kg, so the amount of hexane in the input is 100 kg.

Now, let's calculate the total amount of hexane in the system. The total amount of hexane is the sum of the hexane in the slurry and the hexane in the input, which is 2.5 kg + 100 kg = 102.5 kg.

To estimate the amount of underflow, we need to use the given information that the underflow contains 2 kg of solution for every 3 kg of insoluble solids. Since the slurry consists of 100 kg of inert solids, the amount of solution in the underflow is 2 kg x (100 kg / 3 kg) = 66.67 kg.

To estimate the amount of overflow, we can subtract the amount of underflow from the total amount of hexane. So, the amount of overflow is 102.5 kg - 66.67 kg = 35.83 kg.

Now, let's calculate the composition of the underflow and overflow in terms of oil and hexane. Since the slurry is a 10 wt% solution of oil in hexane, the amount of oil in the slurry is 25 kg x 0.10 = 2.5 kg. The amount of oil in the underflow can be calculated using the ratio of solution to insoluble solids. So, the amount of oil in the underflow is 2.5 kg x (66.67 kg / 100 kg) = 1.67 kg.

To calculate the amount of hexane in the underflow, we subtract the amount of oil from the total amount of hexane in the underflow. So, the amount of hexane in the underflow is 66.67 kg - 1.67 kg = 65 kg.

Similarly, we can calculate the composition of the overflow. The amount of oil in the overflow is 2.5 kg - 1.67 kg = 0.83 kg. The amount of hexane in the overflow is 35.83 kg - 0.83 kg = 35 kg.

In summary, the estimated amounts and composition of the underflow leaving the stage are 66.67 kg with 1.67 kg of oil and 65 kg of hexane. The estimated amounts and composition of the overflow leaving the stage are 35.83 kg with 0.83 kg of oil and 35 kg of hexane.

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Use the following information to answer questions 17-21 The M\&M company says that for all bags of candy that they produce, 20% of the M\&M's in the bag should be orange. We have a random sample bag with 153 M\&M's that only has 24 orange candies. We are interested in seeing if there is enough evidence to conclude that the proportion of M\&M's that are orange in a bag is less than the percentage reported by the company. What is the test statistic? −1.191 1.191 1.310 −1.310

Answers

The proportion of M\&M's that are orange in a bag is less than the percentage reported by the company: The test statistic is -1.310.

To test whether the proportion of orange M&M's in the bag is less than the percentage reported by the company (20%), we can use a one-sample proportion z-test. The test statistic is calculated as:

test statistic = (sample proportion - hypothesized proportion) / standard error,

where the sample proportion is the proportion of orange M&M's in the sample bag, the hypothesized proportion is the percentage reported by the company (20%), and the standard error is the square root of [(hypothesized proportion * (1 - hypothesized proportion)) / sample size].

In this case, the sample bag contains 24 orange M&M's out of 153, which corresponds to a sample proportion of 24/153 ≈ 0.157. The hypothesized proportion is 0.20. The sample size is 153.

Calculating the standard error:

standard error = √[(0.20 * (1 - 0.20)) / 153] ≈ 0.031

Substituting the values into the formula:

test statistic = (0.157 - 0.20) / 0.031 ≈ -1.310

Therefore, the test statistic is approximately -1.310.

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An asphalt concrete mixture with Gmb = 145 pcf, mm = 2.55, G- 1.03, P. = 5.3% and Ggh = 2.78. Determine: (a) G_se (b) P_ba (c) P_be (d) V_a (e) VMA (f) VFA

Answers

The values are: (a) [tex]G_se[/tex] (Effective specific gravity) ≈ 137.715 pcf. (b) [tex]P_ba[/tex] (Bulk specific gravity of asphalt) ≈ 133.85 pcf. (c)[tex]P_be[/tex] (Effective specific gravity of asphalt) ≈ 2.78 pcf. (d)[tex]V_a[/tex] (Voids in mineral aggregate) ≈ 5.19%.(e) VMA (Voids in mineral aggregate) ≈ 97.98%. (f) VFA (Voids filled with asphalt) ≈ 92.79%.

To determine the values for [tex]G_se, P_ba, P_be, V_a,[/tex]VMA, and VFA, we can use the following formulas and calculations based on the given data:

(a) [tex]G_se[/tex] (Effective specific gravity):

[tex]G_se[/tex]= Gmb * (1 - P / 100)

    = 145 pcf * (1 - 5.3 / 100)

    = 137.715 pcf

(b) [tex]P_ba[/tex] (Bulk specific gravity of asphalt):

[tex]P_ba = G_se / G[/tex]

    = 137.715 pcf / 1.03

    ≈ 133.85 pcf

(c) [tex]P_be[/tex] (Effective specific gravity of asphalt):

[tex]P_be = (G_se * V_a + Ggh * VMA) / (V_a + VMA)[/tex]

    = (137.715 pcf * 5.3% + 2.78 * (100% - 5.3%)) / (5.3% + (100% - 5.3%))

    ≈ 2.78 pcf

(d) [tex]V_a[/tex] (Voids in mineral aggregate):

[tex]V_a = 100 - Gmb / G_se * 100[/tex]

   = 100 - 145 pcf / 137.715 pcf * 100

   ≈ 5.19%

(e) VMA (Voids in mineral aggregate):

VMA = 100 - [tex]P_be / G_se * 100[/tex]

    = 100 - 2.78 pcf / 137.715 pcf * 100

    ≈ 97.98%

(f) VFA (Voids filled with asphalt):

VFA = VMA - [tex]V_a[/tex]

    = 97.98% - 5.19%

    ≈ 92.79%

Therefore, the values are:

(a) [tex]G_se[/tex] (Effective specific gravity) ≈ 137.715 pcf

(b) [tex]P_ba[/tex](Bulk specific gravity of asphalt) ≈ 133.85 pcf

(c) [tex]P_be[/tex](Effective specific gravity of asphalt) ≈ 2.78 pcf

(d)[tex]V_a[/tex](Voids in mineral aggregate) ≈ 5.19%

(e) VMA (Voids in mineral aggregate) ≈ 97.98%

(f) VFA (Voids filled with asphalt) ≈ 92.79%

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Find the coordinates of any local extreme points and inflection points. Use these to graph the function y=x²-3x+4. Choose the correct local extrema. CIDO OA. There is a local maximum at (-1,6) and a

Answers

There are no inflection points since the second derivative is a constant. Graphically, the function [tex]\(y = x^2 - 3x + 4\)[/tex] has a local minimum at [tex]\((\frac{3}{2}, \frac{1}{4})\)[/tex] and opens upwards.

To find the local extreme points and inflection points of the function [tex]\(y = x^2 - 3x + 4\)[/tex], we need to find the critical points and determine the concavity of the function.

Taking the derivative of [tex]\(y\)[/tex] with respect to [tex]\(x\)[/tex], we get [tex]\(y' = 2x - 3\)[/tex]. To find the critical points, we set [tex]\(y'\)[/tex] equal to zero and solve for \(x\):

[tex]\[2x - 3 = 0\][/tex]

[tex]\[2x = 3\][/tex]

[tex]\[x = \frac{3}{2}\][/tex]

The critical point is [tex]\(x = \frac{3}{2}\).[/tex]

To determine the concavity of the function, we take the second derivative of [tex]\(y\)[/tex] with respect to [tex]\(x\): \(y'' = 2\)[/tex]. Since [tex]\(y''\)[/tex] is a constant, it does not change sign.

Therefore, the coordinates of the local extreme points are determined by the critical point:

[tex]\((\frac{3}{2}, (\frac{3}{2})^2 - 3(\frac{3}{2}) + 4) = (\frac{3}{2}, \frac{1}{4})\)[/tex]

There are no inflection points since the second derivative is a constant.

Graphically, the function [tex]\(y = x^2 - 3x + 4\)[/tex] has a local minimum at [tex]\((\frac{3}{2}, \frac{1}{4})\)[/tex] and opens upwards.

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Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval for a sample of size 211 with 83% successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places

Answers

Given that the sample size is 211 with 83% successes and we need to find the 99% confidence interval for a sample of size 211 with 83% successes.

Probability of success = p = 0.83 Probability of failure = q = 1-0.83 = 0.17

Sample size = n = 211Confidence level = 99%We know that the confidence interval formula is given by;

It is calculated as, [tex]\overline{p}[/tex] = Number of successes/ Sample size[tex]\overline{p}[/tex]

= 83/211

= 0.393The critical value of z can be found from the z-table for a 99% confidence level.

The value of z for a 99% confidence interval is 2.576Substituting the values in the formula we get;

Lower limit = [tex]\overline{p}[/tex] – z [tex]\sqrt{\frac{\overline{p}q}{n}}[/tex]

= 0.393 – 2.576 [tex]\sqrt{\frac{(0.393)(0.607)}{211}}[/tex]

= 0.336

Upper limit = [tex]\overline{p}[/tex] + z [tex]\sqrt{\frac{\overline{p}q}{n}}[/tex]

Answer: 0.336 ≤ p ≤ 0.449

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what is 4 1/3 times 5 1/3 times 8 1/3 times 6

Answers

The calculated value of the product expression is 10400/9

How to evaluate the product of the expression

From the question, we have the following parameters that can be used in our computation:

4 1/3 times 5 1/3 times 8 1/3 times 6

Express properly

So, we have

4 1/3 * 5 1/3 * 8 1/3 * 6

Express fractions as improper fractions

So, we have

13/3 * 16/3 * 25/3 * 6

Evaluate the products

13/3 * 16/3 * 50

Next, we have

10400/9

Hence, the value of the product expression is 10400/9

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D. 0 Question 4 Which of the following equations is linear? A. 3x +2y+z=4 B. 3xy + 4 = 1 C. + y = 1 D. y = 3x² + 1

Answers

The correct option is D. The equation that is linear is y = 3x² + 1.

The given options are as follows:

A. 3x +2y+z=4

B. 3xy + 4 = 1

C. + y = 1

D. y = 3x² + 1

In the given options, the equation that is linear is y = 3x² + 1.

The given equation y = 3x² + 1 can be written in the form of ax + b, which is a linear equation.

But here x is squared, so it is a quadratic equation.

Therefore, none of the equations mentioned are linear except for the equation y = 3x² + 1.

In the given options, the equation that is linear is y = 3x² + 1.

But, it should be noted that this is an exceptional case.

The given equation y = 3x² + 1 can be written in the form of ax + b, which is a linear equation.

But here x is squared, so it is a quadratic equation.

Therefore, none of the equations mentioned are linear except for the equation y = 3x² + 1.

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Joseph leaves work at 17:00 he drives 48 km from work to home at an average speed of 64 km/h what time does Joseph arrive home give your answer using the 24 hour clock

Answers

Joseph arrives home at 17:45 using the 24-hour clock.

To determine the time Joseph arrives home, we need to calculate the time it takes for him to drive the distance from work to home at an average speed of 64 km/h.

Given that Joseph drives 48 km from work to home, we can use the formula:

Time = Distance / Spee

Time = 48 km / 64 km/h = 0.75 hours

Since the time is given in hours, we have 0.75 hours. To convert this to minutes, we multiply by 60:

0.75 hours * 60 minutes/hour = 45 minutes

So, it takes Joseph 45 minutes to drive from work to home.

Now, to determine the arrival time, we need to add the driving time of 45 minutes to the time Joseph leaves work, which is 17:00.

Adding 45 minutes to 17:00, we get:

17:00 + 45 minutes = 17:45

Therefore, Joseph arrives home at 17:45 using the 24-hour clock.

In summary, Joseph arrives home at 17:45 using the 24-hour clock.

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1. Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.1° and 47.9°, respectively, with the tensile axis. If the critical resolved shear stress is 22 MPa, will an applied stress of 50 MPa cause the single crystal to yield? If not, what stress will be necessary? 2. The critical resolved shear stress for iron is 27 MPa. Determine the maximum possible yield strength for a single crystal of Fe pulled in tension.

Answers

(1) An applied stress of 50 MPa will cause the single crystal to yield since it exceeds the critical resolved shear stress of 22 MPa. (2) The maximum possible yield strength for a single crystal of iron pulled in tension is equal to the critical resolved shear stress of 27 MPa.

(1) To determine if the single crystal will yield under the applied stress of 50 MPa, we need to compare it with the critical resolved shear stress (CRSS). The CRSS represents the minimum stress required to initiate slip in a crystal. In this case, the CRSS is given as 22 MPa. Since the applied stress of 50 MPa exceeds the CRSS, the single crystal will yield.

(2) The maximum possible yield strength for a single crystal of iron can be determined using the critical resolved shear stress. The yield strength represents the stress at which plastic deformation occurs. For a single crystal, the yield strength is equal to the CRSS. In this case, the CRSS for iron is given as 27 MPa. Therefore, the maximum possible yield strength for a single crystal of iron pulled in tension is 27 MPa.

It's important to note that these calculations consider idealized conditions and do not take into account factors such as temperature, impurities, and dislocation interactions, which can affect the actual yield behavior of a material.

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To estimate the height of a building, two students find the angle of elevation from a point (at ground level) down the street from the building to the top of the building is 39 ∘
. From a point that is 300 feet closer to the building, the angle of elevation (at ground level) to the top of the building is 46 ∘
. If we assume that the street is level, use this information to estimate the height of the building. The height of the building is feet.

Answers

The estimated height of the building is approximately \(h\) feet. the angle of elevation to the top of the building is 39 degrees.

To estimate the height of the building, we can use the trigonometric concept of tangent and the given angles of elevation. Let's denote the height of the building as \(h\).

From the first observation point, the angle of elevation to the top of the building is 39 degrees. This means that the tangent of the angle is equal to the ratio of the height of the building to the distance from the observer to the building:

\(\tan(39^\circ) = \frac{h}{d_1}\), where \(d_1\) is the distance from the first observation point to the building.

Similarly, from the second observation point (which is 300 feet closer to the building), the angle of elevation is 46 degrees, and we can set up another equation:

\(\tan(46^\circ) = \frac{h}{d_2}\), where \(d_2\) is the distance from the second observation point to the building.

We can solve this system of equations to find the value of \(h\). Dividing the two equations, we get:

\(\frac{\tan(39^\circ)}{\tan(46^\circ)} = \frac{h/d_1}{h/d_2} = \frac{d_2}{d_1}\)

Substituting the given values, we have:

\(\frac{\tan(39^\circ)}{\tan(46^\circ)} = \frac{d_2}{d_1} = \frac{300}{d_1}\)

Now we can solve for \(d_1\):

\(d_1 = \frac{300}{\frac{\tan(39^\circ)}{\tan(46^\circ)}}\)

Finally, we can substitute the value of \(d_1\) into the first equation to find the height of the building:

\(h = d_1 \cdot \tan(39^\circ)\)

Calculating these values, we find:

\(d_1 \approx 356.96\) feet

\(h \approx 356.96 \cdot \tan(39^\circ)\)

Therefore, the estimated height of the building is approximately \(h\) feet.

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help please
Find the difference quotient, \( \frac{f(a+h)-f(a)}{h} \), for \( f(x)=5 x^{2}+x+3 \). a) \( 10 a+5 h+1 \) b) \( 5 h+1 \) c) \( 10 a+1 \) d) \( \frac{5 h^{2}+2 a+h+6}{h} \)

Answers

The difference quotient for \(f(x) = 5x^2 + x + 3\) is \(10a + 5h + 1\), which corresponds to option a) in the given choices.

To find the difference quotient, we substitute the function \(f(x) = 5x^2 + x + 3\) into the formula \(\frac{f(a+h) - f(a)}{h}\).

First, let's substitute \(f(a+h)\) into the formula:

\(f(a+h) = 5(a+h)^2 + (a+h) + 3\)

Expanding and simplifying:

\(f(a+h) = 5(a^2 + 2ah + h^2) + a + h + 3\)

Next, let's substitute \(f(a)\) into the formula:

\(f(a) = 5a^2 + a + 3\)

Now, let's subtract \(f(a)\) from \(f(a+h)\):

\(f(a+h) - f(a) = 5(a^2 + 2ah + h^2) + a + h + 3 - (5a^2 + a + 3)\)

Simplifying further:

\(f(a+h) - f(a) = 5a^2 + 10ah + 5h^2 + a + h + 3 - 5a^2 - a - 3\)

Combining like terms:

\(f(a+h) - f(a) = 10ah + 5h^2 + h\)

Finally, divide the expression by \(h\) to get the difference quotient:

\(\frac{f(a+h) - f(a)}{h} = \frac{10ah + 5h^2 + h}{h}\)

Simplifying further:

\(\frac{f(a+h) - f(a)}{h} = 10a + 5h + 1\)

Therefore, the difference quotient for \(f(x) = 5x^2 + x + 3\) is \(10a + 5h + 1\), which corresponds to option a) in the given choices.

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Which of the following statements about the triangle is true?



angle A > angle C
angle A > angle B
angle C > angle B
angle B > angle C

Answers

Answer:

angle B > angle C

Step-by-step explanation:

in the triangle ABC

the side opposite the largest angle is the longest

the side opposite the smallest angle is the shortest

the side opposite angle B is the longest

the side opposite angle A is the shortest

then

angle B > angle C ( since 6 > 4 )

What is your y from above? You will use it in the question below. Given your server response time is uniform between (y∗30,y∗55)ms. a.)What is the probability that some server takes longer than y∗44+2 to respond? b.) What is the average response time? c.) What is the variance of the response time?

Answers

The variance of the response time is y^2 * 625/12.

a) What is the probability that some server takes longer than y*44+2 to respond?

We know that the response time of the server is uniform between (y*30, y*55) ms, and y is given to us.

Hence, we need to find the probability that the server takes longer than y*44+2 ms to respond.

Now, the difference between the upper limit and y*44+2 is:

y*55 - (y*44+2) = y*11 - 2

Hence, the probability of the server taking longer than y*44+2 ms to respond is given by:

P(y > y*44+2) = (y*11 - 2)/(y*55 - y*30)

= (11/25 - 2/y)/11

Therefore, the probability that some server takes longer than y*44+2 to respond is (11/25 - 2/y)/11.

Part b) What is the average response time?

The average response time is given by the mean of the uniform distribution.

Hence, it is the average of the lower and upper limits of the distribution.

Mean = (y*30 + y*55)/2 = y*45

Part What is the variance in the response time?

The variance of the uniform distribution is given by:

Var = (b-a)^2/12

Where a and b are the lower and upper limits of the distribution, respectively.

Here, a = y*30 and b = y*55.Var = (y*55 - y*30)^2/12 = y^2 * 625/12

Therefore, the variance of the response time is y^2 * 625/12.

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Given The Function F(X)=X3+6x2, Identify The Concavity Over The Given Interval. X<−2x>−2Based On The Following Graph, Identify

Answers

Based on the graph provided, it's not possible to accurately identify the concavity of the function F(x) = x^3 + 6x^2 over the given interval.

To determine the concavity of the function F(x) = x^3 + 6x^2 over the interval x < -2 and x > -2, we need to find the second derivative of the function.

F(x) = x^3 + 6x^2

Taking the first derivative:

F'(x) = 3x^2 + 12x

Taking the second derivative:

F''(x) = 6x + 12

Now, we need to evaluate F''(x) for x < -2 and x > -2.

For x < -2:

F''(x) = 6x + 12

= (6)(-3) + 12

= -6

Since F''(x) is negative for x < -2, the function is concave down over this interval.

For x > -2:

F''(x) = 6x + 12

= (6)(1) + 12

= 18

Since F''(x) is positive for x > -2, the function is concave up over this interval.

Based on the graph provided, it's not possible to accurately identify the concavity of the function F(x) = x^3 + 6x^2 over the given interval.

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Using Taylor Series, what is the value of yo(4) if y'=x+y² for y(0)=1?

Answers

The value of y(4) if y'=x+y² for y(0)=1 using Taylor Series is 26.813. The Taylor series expansion represents a function as a sum of its infinite derivatives.

We must first find the function's derivatives to use the Taylor series. The first and second derivatives are:

dy/dx = y + x^2 dy^2/dx^2

= 2y + 2x dy^3/dx^3

= 6y + 6x

The Taylor series expansion for the given function is:

y(x + h) = y(x) + h(y + x^2) + h^2(2y + 2x^2) / 2! + h^3(6y + 6x^2) / 3! + ...

For y(0) = 1, the equation becomes:

y(0 + h) = y(0) + h(y(0) + 0^2) + h^2(2y(0) + 2*0) / 2! + h^3(6y(0) + 6*0^2) / 3! + ...

Simplifying and solving for y(4), we get: y(4) = 26.813

The value of y(4) if y'=x+y² for y(0)=1 using Taylor Series is 26.813. The Taylor series expansion represents a function as a sum of its infinite derivatives. It is an important calculus tool used to evaluate functions at specific points. The expansion of a function is useful in approximating the value of a function at a specific point.

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Lazurus Steel Corporation produces iron rods that are supposed to be 31 inches long. The machine that makes these rods does not produce each rod exactly 31 inches long. The lengths of the rods vary slightly. It is known that when the machine is working properly, the mean length of the rods made on this machine is 31 inches. The standard deviation of the lengths of all rods produced on this machine is always equal to 0.2 inch. The quality control department takes a sample of 22 such rods every week, calculates the mean length of these rods, and makes a 97% confidence interval for the population mean. If either the upper limit of this confidence interval is greater than 31.10 inches or the lower limit of this confidence interval is less than 30.9 inches, the machine is stopped and adjusted. A recent sample of 22 rods produced a mean length of 31.04 inches. Based on this sample, will you conclude that the machine needs an adjustment? Assume that the lengths of all such rods have a normal distribution. Round your answers to two decimal places.

Answers

The confidence interval is approximately (30.94, 31.14) inches.

We can create a confidence interval for the population mean and check to see if it falls within the acceptable range of 30.9 to 31.10 inches to ascertain whether the machine needs to be adjusted based on the most recent sample.

Sample size (n) = 22

Sample mean (x') = 31.04 inches

Population standard deviation (σ) = 0.2 inch

Confidence level = 97%

The standard error of the mean (SE) must first be determined using the following formula:

SE = σ / √n

SE = 0.2/√22

SE ≈ 0.0426

Next, we calculate the margin of error (ME) using the formula:

ME = critical value × SE

We can use a calculator or the conventional normal distribution table to look up the crucial number. The critical value for a 97% confidence interval is roughly 2.33.

ME = 2.33 × 0.0426

ME ≈ 0.0992

Now, we can construct the confidence interval (CI) using the formula:

CI = x' ± ME

CI = 31.04 ± 0.0992

CI ≈ (30.94, 31.14)

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Find or approximate all points at which the given function equals its average value on the given interval. f(x)=− 4
π
sinx on [−π,0] The function is equal to its average value at x= (Round to one decimal place as needed. Use a comma to separate answers as needed.)

Answers

Therefore, the function f(x) = (-4/π)sin(x) equals its average value of 4/π at x = -π/2. So, the point at which the function equals its average value is x = -π/2.

To find the points at which the function f(x) = (-4/π)sin(x) equals its average value on the interval [-π, 0], we need to determine the average value of the function on that interval first.

The average value of a function f(x) on an interval [a, b] is given by:

Avg = (1 / (b - a)) * ∫[a, b] f(x) dx

In this case, the interval is [-π, 0] and the function is f(x) = (-4/π)sin(x).

Therefore, the average value Avg is:

Avg = (1 / (0 - (-π))) * ∫[-π, 0] (-4/π)sin(x) dx

= (1 / π) * ∫[-π, 0] -4sin(x) dx

= (1 / π) * [-4(-cos(x))] from -π to 0

= (1 / π) * (4 - 4cos(0) + 4cos(-π))

= (1 / π) * (4 - 4 + 4)

= (1 / π) * 4

= 4 / π

Now, we need to find the points where f(x) equals its average value of 4/π on the interval [-π, 0].

Setting f(x) = 4/π, we have:

(-4/π)sin(x) = 4/π

sin(x) = -1

From the unit circle, we know that sin(x) = -1 at x = -π/2.

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The TIV Telephone Company provides long distance service in their area. According to the company's records, the average length of all long-distance calls placed through this company in 1999 was 12.44 minutes. The company's management wants to check if the mean length of the current long-distance calls is different from 12.44 minutes. A sample of 150 such calls placed through this company produced a mean length of 13.71 minutes with a standard deviation of 2.65 minutes. Using the 5% significance level, test the hypothesis that the mean length of all current long-distance calls is different from 12.44 minutes.
a. What is the null and alternative hypotheses?
b. The test statistic?
c. The rejection region(s)?
d. Indicate whether you reject the null hypothesis.
e. What is the p-value?

Answers

The TIV Telephone Company wants to determine if the mean length of current long-distance calls is different from the average length of 12.44 minutes in 1999. A sample of 150 calls yielded a mean length of 13.71 minutes and a standard deviation of 2.65 minutes. Using a 5% significance level, we will test the hypothesis.

A. The null hypothesis (H0) is that the mean length of current long-distance calls is equal to 12.44 minutes. The alternative hypothesis (Ha) is that the mean length is different from 12.44 minutes.

B. To calculate the test statistic, we will use the formula:

t = (sample mean - hypothesized mean) / (sample standard deviation / √n)

Substituting the given values:

t = (13.71 - 12.44) / (2.65 / √150)

t ≈ 3.244

C. The rejection region for a two-tailed test at a 5% significance level consists of extreme values in both tails of the t-distribution. Since we have a large sample size, we can use the standard normal distribution. The critical values are ±1.96.

D. Since the test statistic falls outside the rejection region (|t| > 1.96), we reject the null hypothesis.

E. To calculate the p-value, we compare the absolute value of the test statistic to the critical value(s) for the given significance level. The p-value is the probability of obtaining a test statistic as extreme or more extreme than the observed value, assuming the null hypothesis is true. In this case, the p-value is very small, less than 0.001.

In conclusion, based on the test results, we reject the null hypothesis and conclude that the mean length of current long-distance calls is significantly different from 12.44 minutes.

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8. A water tower is located 300 ft from a building. From a window in the building, an observer notes that the angle of elevation to the top of the tower is 45° and that the angle of depression to the bottom of the tower is 30° .
a) How high is the window from the ground?
b) How tall is the tower?

Answers

Given: The distance between the water tower and the building is 300 ft.The angle of elevation to the top of the tower is 45°The angle of depression to the bottom of the tower is 30°We need to calculate the height of the window from the ground and the height of the tower.

Solution:Let AB be the water tower and C be the observer in the building. Let CD be the height of the window from the ground. Join BD and AC.From ΔABC we have:tan 45° = AB/BCAB = BC ------ (1)From ΔABD we have:tan 30° = AB/BD√3/3 = AB/BDAB = BD/√3 ------ (2)From Eqs.

(1) and (2), we have:BC = BD/√3BD/BC = √3From ΔBDC, we have:tan 60° = CD/BC√3 = CD/BCCD = BC√3 = BDSo, the height of the window from the ground is CD = BD = BC√3 = 300√3 ft = 519.61 ft (approx)From ΔABD, we have:tan 45° = AD/BDAD = BD ------ (3)Adding Eqs.

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The cost of a chair in the UK is £66.
The cost of the same chair in Cyprus is €44.10.
The exchange rate is £1 = €1.14.

b) The average monthly salary in a country is the average amount of money
that someone in that country ears every month. The cost of the chair is the
same fraction of the average monthly salary in both countries.
The average monthly salary in the UK is £2442.
Work out the average monthly salary in Cyprus, in euros.

Answers

The average monthly salary in Cyprus, in euros, is approximately £1,894.74.

Find the length of the curve. x=81³, y=121², 0sts √3 The length of the curve x = 8t³, y = 12t² on 0sts √/3 is. (Type an integer or a fraction.)

Answers

the length of the curve x = 8t³, y = 12t² on the interval 0 to √3 is 36√3 + 36.

To find the length of the curve, we can use the arc length formula. The formula for the arc length of a curve defined parametrically by x = f(t) and y = g(t) on the interval [a, b] is given by:

L = ∫[a,b] √[ (dx/dt)² + (dy/dt)² ] dt

In this case, we have the parametric equations x = 8t³ and y = 12t², and we need to find the length of the curve on the interval 0 to √3. Let's calculate it step by step:

dx/dt = d/dt(8t³) = 24t²

dy/dt = d/dt(12t²) = 24t

Now, we can calculate the integrand:

√[ (dx/dt)² + (dy/dt)² ] = √[ (24t²)² + (24t)² ]

                          = √(576t⁴ + 576t²)

                          = √(576t²(t² + 1))

Now, we can set up the integral:

L = ∫[0,√3] √(576t²(t² + 1)) dt

To solve this integral, we can make a substitution. Let's substitute u = t² + 1, then du = 2t dt:

L = ∫[0,√3] √(576t²(t² + 1)) dt

 = ∫[0,√3] √(576t²u) (1/2) du

 = (1/2) ∫[0,√3] √(576t²u) du

 = (1/2) ∫[0,√3] √(576u) t du

 = (1/2) ∫[0,√3] √(576u) (u - 1) du       (Substituting t² + 1 for u)

 = (1/2) ∫[0,√3] √(576u³ - 576u²) du

 = (1/2) ∫[0,√3] 24√(u³ - u²) du

 = 12 ∫[0,√3] √(u³ - u²) du

To solve this integral, we can use the power rule. Let's simplify the integrand further:

√(u³ - u²) = √(u²(u - 1))

Now, let's perform another substitution. Let v = u - 1, then u = v + 1 and du = dv:

L = 12 ∫[0,√3] √((v + 1)²v) dv

 = 12 ∫[0,√3] √(v² + 2v + 1)v dv

 = 12 ∫[0,√3] √(v² + 2v + 1)v dv

 = 12 ∫[0,√3] (v + 1)v dv

 = 12 ∫[0,√3] (v² + v) dv

 = 12 (∫[0,√3] v² dv + ∫[0,√3] v dv)

 = 12 ((v³/3 + v²/2)|[

0,√3] + (v²/2)|[0,√3])

Now, let's substitute back v = u - 1:

L = 12 ((u³/3 + u²/2)|[0,√3] + (u²/2)|[0,√3])

Now, evaluate this expression at the upper and lower limits:

L = 12 ((√3³/3 + √3²/2) - (0³/3 + 0²/2) + (√3²/2 - 0²/2))

 = 12 ((√3³/3 + √3²/2) + (√3²/2))

Simplifying further:

L = 12 ((3√3/3 + 3/2) + 3/2)

 = 12 (3√3/3 + 3/2 + 3/2)

 = 12 (3√3/3 + 3)

 = 36√3 + 36

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Rob is weighing a hourse. He
Says “ the horse is 510 kg is the nearest 10 kg"
to
a) what is the maximum possible error in Rob
estimation

Answers

The maximum possible error in Rob's estimation of the horse's weight is 10 kg.

Determine the rounding interval

In this case, the rounding interval is 10 kg because Rob is rounding the horse's weight to the nearest 10 kg.

To calculate the maximum possible error estimate, we need to find the upper and lower bounds within which the actual weight of the horse could fall.

Upper Bound: To find the upper bound, we add half of the rounding interval to Rob's estimation. Half of 10 kg is 5 kg, so the upper bound is 510 kg + 5 kg = 515 kg.

Lower Bound: To find the lower bound, we subtract half of the rounding interval from Rob's estimation. Again, half of 10 kg is 5 kg, so the lower bound is 510 kg - 5 kg = 505 kg.

The maximum possible error is the difference between the upper and lower bounds. In this case, it is 515 kg - 505 kg = 10 kg.

Therefore, the maximum possible error in Rob's estimation of the horse's weight is 10 kg.

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Find all second order derivatives for r(x,y)= 4x+7yxy. Find all second order derivatives for z=3ye 5x

Answers

The second-order partial derivative with respect to x and y is given by: [tex]∂²z/∂y∂x = 15e^(5x).[/tex]

Let us first find the second-order partial derivatives for [tex]r(x, y) = 4x + 7yxy[/tex]

To find all second-order derivatives for [tex]r(x, y) = 4x + 7yxy,[/tex]

we need to follow the below steps.

Step 1: Find the first-order partial derivatives of [tex]r(x, y)[/tex]

The first-order partial derivative with respect to x is given by:

[tex]∂r/∂x = 4 + 7y[/tex]

The first-order partial derivative with respect to y is given by:

[tex]∂r/∂y = 7xy[/tex]

Step 2: Find the second-order partial derivatives of r(x, y)

The second-order partial derivative with respect to x is given by:

[tex]∂²r/∂x² = 0[/tex]

The second-order partial derivative with respect to y is given by:

[tex]∂²r/∂y² = 7x[/tex]

The second-order partial derivative with respect to x and y is given by:

[tex]∂²r/∂y∂x = 7[/tex]

Let us now find the second-order partial derivatives for [tex]z = 3ye^(5x)[/tex]

To find all second-order derivatives for [tex]z = 3ye^(5x),[/tex]

we need to follow the below steps.

Step 1: Find the first-order partial derivatives of z

The first-order partial derivative with respect to x is given by:

[tex]∂z/∂x = 15ye^(5x)[/tex]

The first-order partial derivative with respect to y is given by:

[tex]∂z/∂y = 3e^(5x)[/tex]

Step 2: Find the second-order partial derivatives of z

The second-order partial derivative with respect to x is given by:

[tex]∂²z/∂x² = 75ye^(5x)[/tex]

The second-order partial derivative with respect to y is given by:

[tex]∂²z/∂y² = 0[/tex]

The second-order partial derivative with respect to x and y is given by: [tex]∂²z/∂y∂x = 15e^(5x).[/tex]

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Mike, the Dean of the Business Centre, have been receiving lots of complains about professors that do not feel prepared for using Blackboard. Because he understands that this is a matter for the Learning & Development (L&D) department, he contacted Hanna the L&D Manager. After surveying professors, she found no possible internal solution and hired Alex an instructional designer to complete the project to build an internal training course for professors to learn Blackboard. Match the stakeholder requirements with the appropriate stakeholder category for this project. (__) All professors must have a working knowledge of using Blackboard after completing the training. (__) Must recieve a weekly report of the project progress until the end of the project. (__) Be able to reach out to someone with questions after the training is completed for a period of 6 months. (__) Frequent meetings with the Blackboard support team. A. Project User B. Project Manager C. Customer D. Project Sponsor are generally more serious than , but less serious than . a) misdemeanors; offenses; felonies b) felonies; misdemeanors; offenses c) misdemeanors; felonies; offenses d) offenses; misdemeanors; felonies Ineed help with is question ASAP!Find f + g, f-g, fg, and f/g and their domains. f(x) = 3x, g(x) = x - 4 Find (f + g)(x). -1 Find the domain of (f+g)(x). (Enter your answer using interval notation.) (-[infinity]0,00) Find (f - g)(x). -2 Achonwa Cutting is opening a new line of scissors for supermarket distribution. It estimates its fixed cost to be $550.00 and its variable cost to be $0.50 per unit. Selling price is expected to average $0.60 per unit. a) For Achonwa Cutting, the break-even point in units = enter your response here units (enter your response as a whole number). Achonwa Cutting is opening a new line of scissors for supermarket distribution. It estimates its fixed cost to be and its variable cost to be per unit. Selling price is expected to average per unit. Part 2 a) For Achonwa Cutting, the break-even point in units = ? b) For Smithson Cutting, thebreak-even point in dollars = ? 3) The lifetime risk of developing pancreatic cancer is aboutone in 50. Supposed we randomly sample 300 people, what is themean? {(-3, 5), (-2, 4), (0, 9) (2,4)}HELPPP PLEASE PLEASE ILL PAY U What are the main verb phrases in these sentences? She was reading his comics. At first Park thought he had imagined it. He had this feeling thatshe was looking at him, but whenever he looked over at her, her face was down. 13. Draw the Newman projection of the conformer of the following compound where the two methyl groups are anti. 14. which of the following is a boat conformation of cyclohexane? A. B. C. D. 15. Draw in all of the axial hydrogens on the cyclohexane chair conformation shown. 16. Draw both chair conformers of the following compound and determine which is more stable. 2pts OH 17. Which is the least stable chair conformer of the following compound? Yo A. B. C. D. 18. Draw the most stable chair conformer of the following compound. In a 22 exchange economy, Z and K consume two goods, x 1and x 2. The utilities that both Z and K get from the consumption of these goods are given by the functions; U Z(x 1Z,x 2Z)=(x 1Z) 1/4(x 2Z) 3/4and U K(x 1K,x 2K)=(x 1K) 1/4(x 2K) 3/4, respectively. Before the exchange starts between the consumers, Z has 27 units of x 1and 18 units of x 2, that is ( 1Z, 2Z)=(27,18). K has 54 units of x 1and 9 units of x 2, that is ( 1K, 2K)=(54,9). a. Draw Edgeworth Box of this economy. Clearly mark the axes, size of the box and mark the endowment point. b. What is the relative prices that will set the market to the equilibrium? Among 200 households surveyed, 110 have high-speed internet, 38 have land-line phone service, 128 have mobile phone service, 27 have high-speed internet and land-line phone service, 31 have land-line phone service and mobile phone service. Of those with mobile phone service, 80 have high-speed internet. What is the probability that a household will have high-speed internet and mobile phone service? Which of the following is NOT a stage in developing a shared vision? O develop trust empower the individual O share the vision O reward performance O measure commitmentOf five styles representing di The standard addition method is preferred when: Select one: a. the analyte concentration is too low. b. the sample matrix is complete and difficult to replicate. c. the instrument response can change during the experiment. d. a standard reference material is not available.