Ping is sewing a square tablecloth. The table she wants to cover is 5.5 feet on each side and she wants it to hang over on each side 9 inches. How many square feet of fabric will Ping need?

I've answered this question in two ways and I think I get to the right answer the second time but it's driving me crazy why it doesn't work the first way.

First way:
The cloth is now a rectangle length 66 in (5.5 feet x 12) by 75 in (5.5 feet x 12, plus 9).
a=l*w=66x75=4950 inches÷12 =412.5 sq ft.


Checking my answer for reasonableness, I thought, but if I just multiply 5.5 feet x 5.5 feet , sans adjustments, I get 30.25.

Second way: 9 inches/12 = .75 ft 5.5+.75 = 6.25 ft, and 5.5 x 6.25 ft = 34.375 SQ ft, makes much more sense. But WHY?

There are 19 members from 00 to 18 who do not equal 18.

There are 19 members from 19 to 37 who do not equal 18.

There are 3 members in the age range of 38 to 40, not 2.

Given info,

Explain what is wrong with each of the following simulation designs.

⇒ A roulette wheel has 38 colored slots - 18 red, 18 black members green. To simulate one spin of the wheel, let members 00 to 18 represent red, 19 to 37 represent members and 38 to 40 represent green.

The mistake is;

→ There are 19 member from 00 to 18 which is not 18.

→ There are 19 member from 19 to 37 which is not 18.

→ There are 3 member from 38 to 40 which is not 2.

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x=-[tex]\sqrt{3}[/tex] ,[tex]\sqrt{3}[/tex],-2,2

What is a quadratic equation ?

Quadratics can be defined as a polynomial equation of a second degree, which implies that it comprises a minimum of one term that is squared. It is also called quadratic equations. The general form of the quadratic equation is:

ax² + bx + c = 0

Given:

y=[tex]x^{4} -7x^{2} +12[/tex]

Let [tex]x^{2}[/tex] = k

So , y = [tex]k^{2}[/tex] -7k+12

On simplifying/factorising the given equation  ,we get

y =  [tex]k^{2}[/tex] - 4k - 3k +12

On taking common ,we get

y = k(k-4) -3(k-4)

y =(k-3)(k-4)

Thus , on factorising and equating it to zero we get

(k-3)=0 or (k-4)=0

k=3 or k=4

Now , replacing k by [tex]x^{2}[/tex] ,we get

[tex]x^{2}[/tex] = 3 or  [tex]x^{2}[/tex] = 4

Further on solving ,we get

( [tex]x^{2}[/tex]-3)=0 or ( [tex]x^{2}[/tex]-4)=0

(x-[tex]\sqrt{3}[/tex])(x+ [tex]\sqrt{3}[/tex]) =0  or (x+2)(x-2)=0

x=-[tex]\sqrt{3}[/tex] ,[tex]\sqrt{3}[/tex] or x= -2,2

Thus , x=-[tex]\sqrt{3}[/tex] ,[tex]\sqrt{3}[/tex],-2,2

Hence ,the obtained values of y are the zeros of x .

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Answer: x=30

Step-by-step explanation:

There's a 90-degree angle given so first do 360-90= 270 which is the retainer of the measures. Then 4x+5x = 9x  so 9x=270

So 270 divided by 9 and 9x divided by 9, to get the x by itself

which equals 30.

The hypothesis test that can be used to determine whether the mean annual premium in Pennsylvania is lower than the national mean annual premium is between -2.064 and 2.064.

Hypothesis testing

The standard formula to calculate the hypothesis testing is given by the z test is

Z = (X – U) / (SD / √n)

Where:

X – Sample Mean

U – Population Mean

SD – Standard Deviation

n – Sample size

Given,

Here we have the the insure website reports that the mean annual premium for automobile insurance in the united states was $1,503 in march 2014. being from Pennsylvania at that time, you believed automobile insurance was cheaper there and decided to develop statistical support for your opinion. a sample of 25 automobile insurance policies from the state of Pennsylvania showed a mean annual premium of $1,430 with a standard deviation of is $165.

Here we need to develop the a hypothesis test that can be used to determine whether the mean annual premium in Pennsylvania is lower than the national mean annual premium.

While we looking into the given question we have identified the values of

Sample mean = 1430

Sample size = 25

Population mean = 1503

Standard deviation = 164

Then the hypothesis testing is calculated as,

=> Z = (1430 – 1503) / (164 / √25)

Therefore, if we reject the null hypothesis and accept the alternative hypothesis. The z score of -2.23 is within the rejection area.

And the 2 critical values (cutoff points) are -2.064 and 2.064. Since the z score, -2.23, is outside this interval, we reject the null hypothesis. We accept the alternative hypothesis.

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Hypothesis testing is the process used to evaluate the strength of evidence from sample and provides a framework for making determinations related to the population i.e. it provides a method for understanding how reliably over can extrapolate observed findings in a sample under study to the larger population from which the sample was drawn.

After a performing a test, scientist can: Reject the null hypothesis or Fail to reject the null hypothesis.

Hypothesis testing is an act in statistics whereby an analyst tests an assumption regarding a population parameter.Hypothesis testing is used to assess the plausibility of a hypothesis by using sample data. Such data may come from a larger population, or from a data-generating process.

The null hypothesis is usually a hypothesis of equality between population parameters. Hypothesis testing is a procedure, based on sample evidence and probability, used to test claims regarding a characteristic of a population.

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Answer:

44

Step-by-step explanation:

Answer:

p=31

Step-by-step explanation:

sum of all three angles of any triangle equal 180 degrees

2p+(p+46)+(p+10)=180

4p+56=180

    -56.  -56

4p=124

/4.   /4

p=31

hopes this helps please mark brainliest

Answer:

(14, -3) (0, -5) (15, -25)

Step-by-step explanation:

for the 4th you just need a positive X and negative Y

(x, -y)

have a great day!

The division of 4 by 6 will be 2/3 or 0.67.

We have the following expression -

4 ÷ 6

We can write -

[x] = 4 ÷ 6

We can write -

4 ÷ 6 = 4/6 = 2/3 = 0.67

Therefore, the division of 4 by 6 will be 2/3 or 0.67.

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divide the volume by the total number of points to normalize it. The resulting value is the estimated volume of the bounded object.

def top(x, y):

return x+y

def bottom(x, y):

return x*2 + y*2

import numpy as np

xvals = np.random.uniform(-1, 1, size=10000)

yvals = np.random.uniform(-1, 1, size=10000)

# Initialize the volume

volume = 0

# Calculate the volume using Monte Carlo

for x, y in zip(xvals, yvals):

if top(x, y) > bottom(x, y):

volume += 1

# Normalize the volume by the total number of points

volume /= 10000

print(volume)

The Monte Carlo method is used to estimate the volume of a bounded object by randomly generating points within a known box. First, we generate a list of random (x, y) coordinates using numpy's uniform function. We then initialize the volume to 0 and loop through the list of coordinates and increment the volume by 1 if the point lies above the surface. Finally, we divide the volume by the total number of points to normalize it. The resulting value is the estimated volume of the bounded object.

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Answer: y=-3.46,3.46

Step-by-step explanation:

isolate y

5y^2=60

y^2=12

y=-3.46,3.46

Answer:

Step-by-step explanation:

You have triangles with two sides and the included angle given, or all three sides given. You want the measures of the missing sides or angles.

For triangle ABC, the law of cosines tells us ...

  c² = a² +b² -2ab·cos(C)

Solving for the third side, we get ...

  c = √(a² +b² -2ab·cos(C))

Solving for the angle, we get ...

  C = arccos((a² +b² -c²)/(2ab))

The names of the sides and vertices can be permuted, as long as the angle is between the given sides.

  a = √((7² +9² -2·7·9·cos(35°)) ≈ 5.176

The measure of side 'a' is about 5.2 units.

  C = arccos((8² +7² -10²)/(2·8·7)) = arccos(13/112) ≈ 83.33°

  A = arcsin((8/10)·sin(83.33°)) ≈ 52.62°

  B = arcsin((7/10)·sin(83.33°)) ≈ 44.05°

The last two angles are found using the law of sines:

  sin(A)/a = sin(B)/b = sin(C)/c

  b = √(230² +360² -2·230·360·cos(38°)) ≈ 228 . . . . feet

The third side measures 228 feet.

__

Additional comment

A calculator or spreadsheet can be programmed with the necessary formulas so that you can avoid a lot of repetitive work when you have several of these to solve. You need to make sure angles are treated appropriately, as the default is often radians, rather than degrees.

When solving for angles from three given sides, we like to solve for the largest angle first. That avoids any ambiguity when using the Law of Sines to find the other angles.

When using the Law of Sines to find a second angle after using the Law of Cosines, it can work well to find the smallest remaining angle. (In the first problem, that would be the angle opposite the side of length 7; in the last problem, that would be the angle opposite the side of length 230.)

Answer: 120 square feet

Step-by-step explanation:

Area formula of triangle:

(height of triangle x length) divided by 2

[tex]\frac{30*8}{2} =\frac{240}{2} =120[/tex]

Answer:

120 ft²

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{4 cm}\underline{Area of a triangle}\\\\$A=\dfrac{1}{2}bh$\\\\where:\\ \phantom{ww}$\bullet$ $b$ is the base. \\ \phantom{ww}$\bullet$ $h$ is the height.\\\end{minipage}}[/tex]

From inspection of the given triangle:

Substitute the given base and height into the formula to find the area of the triangle:

[tex]\implies A=\dfrac{1}{2} \cdot 30 \cdot 8[/tex]

[tex]\implies A=15 \cdot 8[/tex]

[tex]\implies A=120\; \sf ft^2[/tex]

Therefore, the area of the given triangle is 120 ft².

what i got when i looked it up: 2750.0005

what i got when i did it 500.0005

For two-sample t-tests, results cannot be compared between studies. The test statistic is given, as well as a p-value. This test is also known as a matched sample or paired t-test. It is assumption of normal distribution.

The paired-samples t-test, also known as the dependent-samples t-test, is a statistical technique used to determine whether the mean difference between two sets of observations is zero. In a paired-samples t-test, each subject or entity is measured twice to obtain a pair of observations. Common uses of the paired-samples t-test are case-control studies or repeated measures designs.

A normal distribution is a type of continuous probability distribution in which most data points cluster toward the middle of the range and the rest decrease symmetrically toward one extreme. The middle of the range is also called the mean of the distribution.

The normal distribution is also known as the Gaussian distribution or probability bell curve. It is symmetrical about the mean, indicating that values ​​close to the mean occur more frequently than values ​​far from the mean.

Assumption:

The Normalization Assumption is cautioned because so many experiments are based on the assumption of a normal distribution. is required. In most cases, the assumption of normality makes sense.

However, there is an important special case where this is not the case. Understanding the normal distribution assumptions helps researchers understand the limitations of their experiments and understand their own research and where it went wrong.

The assumption of normal distribution can be relaxed in some situations, but the analysis is more complicated. The simplest analysis is obtained when the physical process can be approximated by a normal distribution. However, even if the distribution is non-normal, it retains some basic properties. For example, you can assume symmetry, such as the t distribution, even if the distribution is not truly normal.

In fact, many different non-normal distributions are just variations of the normal distribution. For example, there are distributions with long tails that represent variations in a normal distribution. Such distributions are also common.

The reason for the normal distribution assumption is that it is usually the simplest mathematical model available. Moreover, it is remarkably ubiquitous, found in most natural and social phenomena. So the assumption of normality is usually a good first approximation.

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It is not possible to determine the area of square 3 based on the information given. The area of a square is determined by its side length, which is not mentioned in the problem. In order to find the area of a square, you need to know the length of at least one side. The perimeter of a square, which is the total length of all its sides, is not sufficient to determine the area of the square. You would need to know the side length of square 1 in order to calculate its area.

Answer:400

Step-by-step explanation:

 The region that lies inside the cylinder between the planes z = −2 and

z = 5 is 324π

Using cylindrical coordinates,

the integral becomes

∫∫∫ (r2) drdθdz, E

where E is the region that lies inside the cylinder r2 = 9 and between the planes z = −2 and z = 5.

The integral can be evaluated as follows:

=  ∫₋₂⁵∫₀²π∫₀³ [tex]r^2[/tex]drdθdz

= ∫₋₂⁵∫₀²π(3[tex]r^3[/tex]/3) dθdz

=  ∫₋₂⁵ (2π × (3 × 93/3)) dz

=  ∫₋₂⁵ (108π) dz

= (108π × (5 − (−2)))

= 324π

The region that lies inside the cylinder between the planes z = −2 and

z = 5 is 324π

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The correct statement regarding how can a translation and a rotation be used to map triangle HJK to triangle LMN is given as follows:

The translation just changes the position of the figure, hence it has to be among equivalent vertices of the triangles.

The equivalent vertices are given as follows:

The equivalent sides are given as follows:

HK and LN.

Thus the rotation is about K until HK lies on the line containing LN, and the third option is correct.

The problem is given by the image shown at the end of the answer.

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In hyperbolic geometry, the angle sum of a triangle is always less than 180 degrees.

A lune is a wedge of a sphere with angle θ, represented by L(θ) in the proof.

α, β, and γ are the three angles of the triangle.

4πr²+4area[αβγ]=2L(α)+2L(β)+2L(γ)

2(2πr²+2area[αβγ])=2(L(α)+L(β)+L(γ))

2πr²+2area[αβγ]=L(α)+L(β)+L(γ)

At this point, we need to use a theorem that states that a lune whose corner angle is θ radians has an area of 2θr².

2πr²+2area[αβγ]=2αr²+2βr²+2γr²

2πr²+2area[αβγ]=2r²(α+β+γ)

π+area[αβγ]r²=α+β+γ

At this point, it is clear that the sum of the angles is equal to π plus the area[αβγ]r² (which cannot be zero).

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Answer:

1) 60

2)  15

3) 45

4) 105

5) 75

Step-by-step explanation:

7y + 5y = 180  A straight angle is 180  Combine like terms

12y = 180  Divide both sides by 12

y = 15

The sum of the interior angles is 180

y = 15

180 - (5y + 3y) = x

180 -(5(15) + 3(15)) = x

180 - (75 + 45) = x

180 - 120 = x

60 = x

Angle c

3y

3(15)

45

Angle DBC

7y

7(15)

105

Angle CBA

5y

5(15)

75

1. ZX ≅WY; WXYZ is a parallelogram.           1. Given

2. ZY≅  WX                                                     2. The opposite sides of the                

                                                                      parallelogram are ≅  

There are 4 different kinds of parallelograms, including 3 unique kinds. The four types are rhombuses, squares, parallelograms, and rectangles.

There are not equal sides on a parallelogram. A parallelogram only has equal sides on its opposite sides.

A line segment bisector splits a line segment into two equally sized pieces. It passes through the segment's halfway.

The following justifications are given for the choice made above:

The following is how the two-column proof is presented.

Statement Motive

1. ZX ≅WY; WXYZ is a parallelogram.           1. Given

2. ZY≅  WX                                                     2. The opposite sides of the parallelogram are ≅

3. YX ≅ YX                                                   3. The reflexive quality

4. Δ ZYX ≅ΔWXY                                      4. The SSS thm.

5 . ∠ZYX ≅ ∠WXY                                       5 . CPCTC

6  . m∠ZYX ≅m∠WXY                                 6. Def. of ≅

7.    m∠ZYX + mWXY equal 180°        7. Parallelograms with consecutive s are additional

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The simplified form of the given expression as required in the task content is; 8.

It follows from the task content that the simplified form of the given expression; -4 ( 2 - (³√8 × 6) ) / 5 is to be determined.

Therefore, By solving the innermost parentheses; we have;

-4 ( 2 - (2 × 6) ) / 5

= -4 ( 2 - 12 ) / 5

= -4 ( -10 ) / 5

= 40 / 5

= 8.

Therefore, the simplified form of the expression is; 8.

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Using limits, it is found that the statement which describes the end behavior of the function f(x) is: As x approaches negative infinity, f(x) approaches positive infinity.

How we find the end behavior of a function f(x)?

It is given by the limit of f(x) as x approaches both positive infinity and negative infinity.

In this problem, the function is:

f (x) =   1/7 | x - 4 | + 3

Hence, the limits are:

[tex]\lim_{n \to -\infty} f(x) = \lim_{n \to -\infty} [1/7 | x - 4 | + 3] = \frac{1}{7} |-\infty - 4| + 3 = \infty\\\\ \lim_{n \to \infty} f(x) = \lim_{n \to -\infty} [1/7 | x - 4 | + 3] = \frac{1}{7} |\infty - 4| + 3 = \infty\\[/tex]

Approaches positive infinity in both cases, hence as x approaches negative infinity, f(x) approaches positive infinity.

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The volume of the rectangular pyramid is 900 cubic yards.

The standard formula of the volume of the rectangular pyramid is written as

V = 1/3s²h

where s refers the base edge and h refers the height.

Here we have given that the square base has side lengths 15 yards and the height is 12 yards.

Now, we have to find the volume of the rectangular pyramid

As we know the the value of base edge is 15 yard and the height is 12 yards.

Now, we have to apply the values on the formula then we get,

=> V = 1/3 x 15² x 12

It can be simplified as,

=> V = 4 x 225

When we do the appropriate arithmetic operation, then we get,

=> V = 900 cubic yard.

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The simplest form of (4y^2)^3(3y^2) is 192 y⁸.

What is an expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows: Expression: (Math Operator, Number/Variable, Math Operator)

Given expression is (4y²)³(3y²).

The law of exponent formula are:

(a^m)^n = a^(mn)

(a^m)(a^n) = a^(m+n).

Now applying the formula (a^m)^n = a^(mn) in (4y²)³

(4y²)³ = 4³× y²ˣ³ = 64y⁶

Putting (4y²)³ = 64y⁶ in (4y²)³(3y²):

(4y²)³(3y²) = 64y⁶ × (3y²)

Now applying the formula (a^m)(a^n) = a^(m+n):

(4y²)³(3y²) = (64× 3) y⁶⁺²

(4y²)³(3y²) = 192 y⁸

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the matrix A, which is composed of all scalar multiples of the vector [6 3], and represents the reflection about the line L in R2.A = [[-6/7, 9/7],[9/7, 6/7]]

Let L be the line in R^2 which consists of all scalar multiples of the vector [6 3], then the equation of the line is y= (3/6)x.

We need to find the matrix A which represents the reflection about the line L.

Let (x1, y1) be any point on the line L and let (x2, y2) be its reflection about the line L.

Now, we know that the slope of the line L is 3/6, hence the slope of the normal to the line L is -6/3.

So, the equation of the normal to the line L is y = -(6/3)x. Now, we can use the point-slope form of the line equation to calculate the equation of the line passing through (x1, y1) and its reflection (x2, y2).

The line that connects (x1, y1) and (x2, y2) has the following equation:

y-y1 = (y2-y1)/(x2-x1) (x-x1)

=> y-y

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Hurdle rate is 55%.

Ellon aeronautics has an ROI of 8% based on revenues of $30,000. the expenses residual income is $27,000 and the investment turnover is 1.5. The hurdle rate is 55%.

Investment

Investment Mathematics provides an introductory analysis of investments from a quantitative viewpoint, drawing together many of the tools and techniques required by investment professionals.    

Residual Income

Residual income is calculated as net income less a charge for the cost of capital. This is known as the equity charge and is calculated as the value of equity capital multiplied by the cost of equity or the required rate of return on equity. The formula is: Residual Income = Net Income - Equity Charge    

The investment turnover using this formula

Investment turnover=Sales/invested capital

Investment turnover = ($27000 / $30,000) × 1.5

Investment turnover = 0.9 × 1.5

Investment turnover =1.35

The hurdle rate using this formula

Hurdle rate = ROI - Investment turnover

Hurdle rate = 8 - 1.35

Hurdle rate = 0.55 × 100

Hurdle rate = 55%

Therefore the hurdle rate is 55%.  

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The difference of the functions, f(x) = 3x² + 4x - 6 and g(x) = 6x³ - 5x² - 2, is: D. (f - g)(x) = -6x³ + 8x² + 4x - 4.

Finding the difference of two functions involves combining like terms together and then simplify.

Given the functions:

f(x) = 3x² + 4x - 6

g(x) = 6x³ - 5x² - 2

To find (f - g)(x), it implies that we find the difference between f(x) and g(x).

(f - g)(x) = f(x) - g(x)

Substitute

f(x) - g(x) = (3x² + 4x - 6) - (6x³ - 5x² - 2)

Open the parentheses:

f(x) - g(x) = 3x² + 4x - 6 - 6x³ + 5x² + 2

Combine like terms

f(x) - g(x) = - 6x³ + 8x² + 4x - 4

Therefore, the answer is: D. (f - g)(x) = -6x³ + 8x² + 4x - 4

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By using the alternating series estimation theorem we found that the number of terms we need to add in order to find the sum with an error less than 0.0001 is 7.

We must employ one of the convergence tests to determine whether the provided series is convergent or divergent. The alternating series test, which states that a series converges if it takes the form ∑ [tex](-1)^{n}[/tex] x an, where 'an' is a decreasing sequence of positive terms, is the most applicable test for this series.

∑ [tex](-1)^{n}[/tex] x an

a n =  [tex]\frac{(n + 1)}{(n^2 + 2n + 3)}[/tex]

by taking the derivative of the expression for a n, this sequence is decreasing and showing that it is always negative. given by a'n =  [tex]\frac{(n + 1)}{(n^2 + 2n + 3)}[/tex] [tex]- \frac{(n + 1) X 2)}{(n^2 + 2n + 3)^2}[/tex]

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

for all values of n it is negative, therefore the sequence a n is decreasing. Thus, given series satisfies the conditions of the alternating series test. Therefore, the series is convergent.

The alternating series estimation theorem can be used to determine how many terms are required to be added in order to find the total with an error of less than 0.0001. This asserts that the first disregarded term in an alternating series is smaller than the error in the series' sum. The error in the sum of the series with N + 1 terms is therefore smaller than the value of the (N + 1)th term in the series if we add N terms to the series and the error is less than E.

Find the first term in the series that is less than 0.0001 in order to calculate the number of terms we must add to the series in order to find the total with an error smaller than 0.0001.

given series that a 1 = [tex]\frac{2}{4}[/tex] = 0.5, a 2 = [tex]\frac{3}{9}[/tex] = 0.333, a 3 = [tex]\frac{4}{16}[/tex] = 0.25, and a 4 = [tex]\frac{5}{25}[/tex] = 0.2. Since the first term that is less than 0.0001 is a 7 = [tex]\frac{8}{64}[/tex] = 0.125, Adding, 7 terms to the series in order to find the sum with an error less than 0.0001.

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