A spherical balloon has a radius of 165 mm. How much air was used to fill this balloon?

Step-by-step explanation:

To find the greatest common factor (GCF) of 8, 16, and 40, we can determine the largest number that evenly divides all three of them.

Let's first find the prime factorization of each number:

- 8 = 2 * 2 * 2

- 16 = 2 * 2 * 2 * 2

- 40 = 2 * 2 * 2 * 5

Now, let's identify the common factors by finding the minimum exponent for each prime factor:

- 2 is a common factor with an exponent of 2 (appearing twice in the prime factorization of 8 and 16).

- 5 is not a common factor since it appears only in the prime factorization of 40.

The GCF is obtained by multiplying the common factors with their respective minimum exponents:

GCF = 2^2 = 4

Therefore, the greatest common factor of 8, 16, and 40 is 4.

If the scatter points lie on a straight line then it indicates a perfect linear relationship between the two variables.

When drawing a scatter diagram, if the scatter points lie on a straight line then it indicates a perfect linear relationship. A scatter plot is a diagram used to show the relationship between two sets of data. Scatter plots are used to examine the correlation or association between two variables. A scatter plot is a set of points plotted on a horizontal and vertical axes. The position of each point on the graph represents the value of the two variables.
Scatter diagrams can reveal correlation between variables. There are three types of correlation, namely:
Positive correlation: Both variables increase or decrease at the same time. The line of best fit slopes upward.
Negative correlation: One variable increases as the other decreases. The line of best fit slopes downward.
No correlation: There is no relationship between the two variables. Points are scattered randomly throughout the graph.
If the scatter points lie on a straight line, it indicates a perfect linear relationship between the two variables. The line of best fit is a straight line, showing a strong correlation between the variables. The correlation coefficient value (r) for this type of relationship would be either +1 or -1.
Skewness refers to the degree of asymmetry in a set of data. It describes how the data is distributed. None of these and no relationship refers to the absence of correlation between two variables.

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The distance between the centers of the two ends circles would be = 60cm.

To calculate the distance between the two end circles that is being enclosed by a rectangle, the following is carried out as follows:

The length of the rectangle = 90cm.

The diameter of the 3 circles = 90/3 = 30cm

The distance would be calculated as the radius of circle 1+diameter of circle 2 + radius of circle 3.

That is;

= 30/2+30+30/2

= 15+30+15

= 60cm

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Answer:

Step-by-step explanation:

Exchange rates are the rates at which one currency can be exchanged for another currency. They represent the value of one currency relative to another currency.

Answer: 3

Step-by-step explanation:  List out 2, 3, 1, 3, 3, 5 and 4

Then order them in ascending order: 1, 2, 3, 3 ,3 4, 5

The find the middle number : 3

The variance of X-bar is 12.25.

To find the variance of the sample mean (X-bar) for a normally distributed population, we can use the formula:

Variance of X-bar = (Population Variance) / (Sample Size)

In this case, the population mean (μ) is 138 and the standard deviation (σ) is 14. The population variance (σ^2) can be calculated as the square of the standard deviation, which gives us 14^2 = 196.

Since we are sampling with a batch size of 16, the sample size is also 16.

Now we can substitute these values into the formula:

Variance of X-bar = 196 / 16 = 12.25

Therefore, the variance of X-bar is 12.25.

It's important to note that the sample mean (X-bar) is an unbiased estimator of the population mean (μ). The smaller the sample size, the greater the variability of X-bar around the population mean.

As the sample size increases, the variance of X-bar decreases, indicating a more precise estimate of the population mean.

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a. The mean amount of rain for the month is 1.75 inches, the variance is approximately 0.1250 square inches, and the standard deviation is approximately 0.3536 inches.

b. The probability of more than 1.00 inch of rain in April is approximately 0.83 or 83%.

Since we're given that April rainfall in Mesa, Arizona follows a uniform distribution between 0.50 and 3.00 inches, the mean or expected value of this distribution can be calculated as the average of the minimum and maximum values:

mean = (0.50 + 3.00) / 2 = 1.75 inches

To find the variance and standard deviation, we can use the formulas for these measures of spread for a uniform distribution:

variance = [(maximum - minimum)^2] / 12 = [(3.00 - 0.50)^2] / 12 ≈ 0.1250 square inches

standard deviation =√(variance) ≈ 0.3536 inches

b. To find the probability of more than 1.00 inch of rain, we need to calculate the area under the uniform distribution curve between 1.00 and 3.00 inches, since these are the values corresponding to more than 1.00 inch of rain. The area under a uniform distribution curve is given by the formula:

area = (maximum - minimum) * (x - minimum)^(-1)

where x is the value of interest and the other terms are the minimum and maximum values of the distribution.

Plugging in the given values, we get:

area = (3.00 - 0.50) * (1.00 - 0.50)^(-1) = 5/3

Therefore, the probability of more than 1.00 inch of rain in April is approximately 5/3 or 1.67, which is greater than 1. Since probabilities must be between 0 and 1, we conclude that there is an error in the calculation done above, and the actual probability is 1 minus the probability of getting 1 inch or less:

P(X > 1) = 1 - P(X <= 1) = 1 - (1 - 0.50) / (3.00 - 0.50) = 0.8333 or approximately 0.83

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[tex]{\huge{\green{\maltese}}}[/tex][tex]{\huge{\green{\mathbb{ANSWER}}}}[/tex]

______________________________________

There are a total of 29 students in the class.

The probability of selecting an accounting major on the first pick is 9/29.

After the first pick, there are 28 students remaining, 8 of whom are accounting majors.

The probability of selecting another accounting major on the second pick is 8/28.

Using the multiplication rule, the probability of selecting two accounting majors is:

(9/29) * (8/28) = 0.079

Rounded to three decimal places, the probability is 0.079.

The value of the required missing angle is;

m<JKM = 35°

We know from geometry that the sum of angles in a triangle sums up to 180 degrees.

Now, we are trying told that in the given Triangle that the angle m<J = 55 degrees.

We also see that the angle <KMJ is equal to 90 degrees becasue it is a right angle.

Thus to find the angle m<JKM, we can write the name expression as;

m<JKM = 180 - (90 + 55)

m<JKM = 35°

Thus that's the value of the required missing angle.

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Answer:

Anthony T. answered • 03/17/21

TUTOR 5 (52)

Patient Math & Science Tutor

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First, let's ask ourselves what do we want to know? We want to know how many cups of small and large lemonades were sold. Let's let S = # of small cups, and L the # of large cups.

It says she sold a total of 155 cups; that means S + L = 155. So this is one equation.

Next it says she made a total of $265. The small cups sold for $1.25 each, so she made $1.25S amount of money on these. It also says she sold large cups for $2.50 each, so she made $2.50L on these.

So, if we add up the money she made from each size, we can say 1.25S + 2.50L = 265.

Now we have two equations with 2 unknowns, and we can solve by either elimination or substitution. Let's solve it by substitution.

As S + L =155, L = 155 - S. Put this expression for L into the second equation.

1.25S + 2.50(155-S) = 265. Now solve this for S.

You should get S = 98 small cups. So, from the equation S + L = 155, solve for L which gives

L = 57 large cups. You can prove this by substituting these numbers in the second equation.

The same principles apply to other problems of this type.

The two clocks will chime at the same time 96 times over the next 24 hours, based on the LCM of the intervals at which they chime.

To determine how many times both clocks will chime at the same time over the next 24 hours, we need to find the least common multiple (LCM) of the intervals at which the clocks chime.

The first clock chimes every 15 minutes, which means it chimes 24 times in a 24-hour period (24 hours × 60 minutes / 15 minutes = 96 intervals).

The second clock chimes every half hour, which means it chimes 48 times in a 24-hour period (24 hours × 60 minutes / 30 minutes = 48 intervals).

To find the LCM of 96 and 48, we can list the multiples of both numbers and find the smallest common multiple:

Multiples of 96: 96, 192, 288, 384, 480, ...

Multiples of 48: 48, 96, 144, 192, 240, ...

From the lists, we can see that the smallest common multiple is 96.

Therefore, both clocks will chime at the same time 96 times over the next 24 hours.

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Mr. Oliver has 3 cubic feet of space left in the file cabinet.

The volume of the file cabinet can be calculated by multiplying its length, width, and height.

In this case, the length is 2 feet, the width is 1 foot, and the height is 3 feet.

Therefore, the initial volume of the file cabinet is:

Volume = Length [tex]\times[/tex] Width [tex]\times[/tex] Height

= 2 ft [tex]\times[/tex] 1 ft [tex]\times[/tex] 3 ft

= 6 cubic feet

If Mr. Oliver has filled 3 cubic feet of the file cabinet, we can subtract this amount from the initial volume to find out how much cubic feet he has left:

Leftover volume = Initial volume - Filled volume

= 6 cubic feet - 3 cubic feet

= 3 cubic feet

Therefore, Mr. Oliver has 3 cubic feet of space left in the file cabinet.

It's important to note that the dimensions and calculations provided are based on the assumption that the file cabinet has a rectangular shape and that the filled volume does not exceed the total volume of the cabinet.

Additionally, if there are any compartments or divisions inside the cabinet, it could affect the available space.

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The solution to the simultaneous equations [tex]3^x + 2^{(y+2)} = 10[/tex] and [tex]2^y - 3^{(x+2)}= 2[/tex] is x = -1 and y = 2.

To solve the simultaneous equations:

[tex]3^x + 2^{(y+2)} = 10[/tex]

[tex]2^y - 3^{(x+2)} = 2[/tex]

We can use a combination of logarithms and algebraic manipulation to find the values of x and y that satisfy both equations.

Let's begin by focusing on the first equation:

[tex]3^x + 2^{(y+2)} = 10[/tex]

We can rewrite [tex]2^{(y+2)[/tex] as[tex](2^2)(2^y) = 4(2^y),[/tex] so the equation becomes:

[tex]3^x + 4\times(2^y) = 10[/tex]

Now let's rearrange the second equation:

[tex]2^y - 3^{(x+2)} = 2[/tex]

[tex]2^y - 3^23^x = 2[/tex]

[tex]2^y - 93^x = 2[/tex]

To eliminate the [tex]2^y[/tex] term, we can multiply the first equation by 2:

[tex]2\times(3^x) + 8\times(2^y) = 20[/tex]

Now we have two equations:

[tex]2\times(3^x) + 8\times(2^y) = 20[/tex]

[tex]2^y - 9\times(3^x) = 2[/tex]

We can eliminate the [tex]2^y[/tex] term by subtracting the second equation from the first:

[tex]2\times(3^x) - 9\times(3^x) + 8\times(2^y) = 20 - 2[/tex]

[tex]-7\times(3^x) + 8\times2^y) = 18[/tex]

At this point, we have a system of two equations:

[tex]-7\times(3^x) + 8\times(2^y) = 18[/tex]

[tex]2^y - 9\times(3^x) = 2[/tex]

Solving this system of equations may require numerical methods or approximation techniques.

It is not possible to find an exact solution algebraically.

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The calculated acceleration at the time t = 1.1 is 43.36 ms⁻²

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

v (ms⁻¹) 43.1   47.7  52.1   56.4  60.8

t(s)         1.0      1.1     1.2      1.3   1.4

The acceleration is calculated as

a = v/t

At time t = 1.1, we have

v = 47.7

Substitute the known values in the above equation, so, we have the following representation

a = 47.7/1.1

Evaluate

a = 43.36

Hence, the acceleration is 43.36 ms⁻²

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Question

The velocity v at specified time t is recorded in the table below.

v (ms⁻¹) 43.1   47.7  52.1   56.4  60.8

t(s)         1.0      1.1     1.2      1.3   1.4

Find the acceleration at time t = 1.1

Let T be a linear transformation from P2 to R such that T(p) = intrals from 0 to 1 p(x)dx. so, [tex]T(9x^2 - (3)x+(-2))[/tex] evaluates to -1/2.

To evaluate the linear transformation T applied to the polynomial[tex]9x^2 - 3x - 2[/tex], we need to find the integral of the polynomial over the given interval, which in this case is from 0 to 1.

First, let's calculate the integral of the polynomial[tex]9x^2 - 3x - 2[/tex]with respect to x:

[tex]\int\limits {(9x^2 - 3x - 2)} \, dx[/tex]

Using the power rule of integration, we can integrate each term separately:

= [tex](9/3)x^3 - (3/2)x^2 - 2x + C[/tex]

Simplifying further, we get:

= [tex]3x^3 - (3/2)x^2 - 2x + C[/tex]

Now, to evaluate the linear transformation T, we substitute the limits of integration into the antiderivative:

[tex]T(9x^2 - 3x - 2) = [3x^3 - (3/2)x^2 - 2x][/tex] evaluated from 0 to 1

Substituting the upper limit (1) into the expression, we have:

= [tex]3(1)^3 - (3/2)(1)^2 - 2(1)[/tex]

Simplifying, we get:

= 3 - (3/2) - 2

= 6/2 - 3/2 - 4/2

= -1/2

Therefore, [tex]T(9x^2 - 3x - 2)[/tex] evaluates to -1/2.

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The quadratic expression [tex]x^2[/tex] - 4x + 6 is already in standard form.

To determine if the given quadratic expression [tex]x^2[/tex] - 4x + 6 is in standard form, we need to compare it with the general form of a quadratic equation, which is a[tex]x^2[/tex] + bx + c = 0.

In the given expression, we have:

a = 1 (coefficient of [tex]x^2[/tex])

b = -4 (coefficient of x)

c = 6 (constant term)

Since all the coefficients are already in their respective positions and the terms are arranged in decreasing order of exponents, the expression [tex]x^2[/tex]- 4x + 6 is indeed in standard form.

To summarize, the quadratic expression [tex]x^2[/tex] - 4x + 6 is already in standard form, as the terms are arranged in decreasing order of exponents (from highest to lowest) and the coefficients are in their respective positions.

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By using the graph, the statement which best describes f(x) include the following: B. f(x) has an inverse function because its graph passes the horizontal line test.

In Mathematics, a vertical line test is a technique which is typically used to determine whether or not a given relation is a function.

According to the vertical line test, a vertical line must cut through the x-coordinate (x-axis) on the graph of a function at only one (1) point, in order for it to represent a function.

In conclusion, we can logically deduce that f(x) has an inverse function and its graph passes the horizontal line test because the horizontal line crosses the graph in only one point in different positions.

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Check the picture below.

[tex]\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h~~=height\\ a,b=\stackrel{parallel~sides}{bases~\hfill }\\[-0.5em] \hrulefill\\ a=5\\ b=11\\ h=4 \end{cases} \implies A=\cfrac{4(5+11)}{2}\implies A=32~cm^2[/tex]

The triangles RST and VUT in the figure are congruent

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

The triangle (see attachment)

By definition, we have

"If two sides in one triangle are congruent to two sides in another triangle and the included angle in both are congruent, then the two triangles are congruent"

This means that they are congruent by the SAS  statement

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Answer:

1) [tex]\sqrt{53}(\cos286^\circ+i\sin286^\circ)[/tex]

2) [tex]\displaystyle 5,-\frac{5}{2}+\frac{5\sqrt{3}}{2}i,-\frac{5}{2}-\frac{5\sqrt{3}}{2}i[/tex]

Step-by-step explanation:

Problem 1

[tex]z=2-7i\\\\r=\sqrt{a^2+b^2}=\sqrt{2^2+(-7)^2}=\sqrt{4+49}=\sqrt{53}\\\\\theta=\tan^{-1}(\frac{y}{x})=\tan^{-1}(\frac{-7}{2})\approx-74^\circ=360^\circ-74^\circ=286^\circ\\\\z=r\,(\cos\theta+i\sin\theta)=\sqrt{53}(\cos286^\circ+i\sin 286^\circ)[/tex]

Problem 2

[tex]\displaystyle z^\frac{1}{n}=r^\frac{1}{n}\biggr[\text{cis}\biggr(\frac{\theta+2k\pi}{n}\biggr)\biggr]\,\,\,\,\,\,\,k=0,1,2,3,\,...\,,n-1\\\\z^\frac{1}{3}=125^\frac{1}{3}\biggr[\text{cis}\biggr(\frac{0+2(2)\pi}{3}\biggr)\biggr]=5\,\text{cis}\biggr(\frac{4\pi}{3}\biggr)=5\biggr(-\frac{1}{2}-\frac{\sqrt{3}}{2}i\biggr)=-\frac{5}{2}-\frac{5\sqrt{3}}{2}i[/tex]

[tex]\displaystyle z^\frac{1}{3}=125^\frac{1}{3}\biggr[\text{cis}\biggr(\frac{0+2(1)\pi}{3}\biggr)\biggr]=5\,\text{cis}\biggr(\frac{2\pi}{3}\biggr)=5\biggr(-\frac{1}{2}+\frac{\sqrt{3}}{2}i\biggr)=-\frac{5}{2}+\frac{5\sqrt{3}}{2}i[/tex]

[tex]\displaystyle z^\frac{1}{3}=125^\frac{1}{3}\biggr[\text{cis}\biggr(\frac{0+2(0)\pi}{3}\biggr)\biggr]=5\,\text{cis}(0)=5(1+0i)=5[/tex]

Note that [tex]\text{cis}\,\theta=\cos\theta+i\sin\theta[/tex] and [tex]125=125(\cos0^\circ+i\sin0^\circ)[/tex]

The team has failed to meet his quality goal of achieving a quality score above 0.95 in the last four weeks.

The table shows the weekly goals and their respective scores:

Weekly Goals:

Job Satisfaction Score > 4.50, Absence Rate ≤ 0.03, Quality Score > 0.95, Output Score > 9Week Job Sat Score

To compare the quality score for the past four weeks, we have:

Quality Score in Week 2 = 0.88

Quality Score in Week 3 = 0.89

Quality Score in Week 5 = 0.92

Quality Score in Week 6 = 0.83

Quality Score in Week 7 = 0.91

Quality Score in Week 8 = 0.92

Quality Score in Week 9 = 0.83

Since, the goal was Quality Score > 0.95,

To see how your team is doing against your quality goals over the last four weeks, you need to compare your quality score each week to your goal of 0.95. The Quality Scores for the past 4 weeks are:

Week 23: 0.88

Week A: 0.89

Week 56: 0.90

Week 78: 0.92

We are counting quality scores each week with a goal of 0.95. increase. , you can see that none of the quality values ​​meet or exceed the target.

As a result, the team has failed to meet his quality goal of achieving a quality score above 0.95 in the last four weeks.

It can be observed that the team was not able to achieve the quality goal in any of the weeks (Week 2 to Week 9).

Therefore, it can be concluded that the team was not able to achieve the quality goal in the past four weeks.

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Based on the net present value profile, Project H has a higher NPV than Project E.

To compare the net present value (NPV) of Project E and Project H, we need to calculate the present value of cash flows for each project and determine which one has a higher NPV. The cash flow patterns for the two projects are as follows:

Project E:

Initial investment: -$100,000

Cash flows for Year 1: $40,000

Cash flows for Year 2: $50,000

Cash flows for Year 3: $60,000

Project H:

Initial investment: -$120,000

Cash flows for Year 1: $60,000

Cash flows for Year 2: $50,000

Cash flows for Year 3: $40,000

To calculate the present value of cash flows, we need to discount them using an appropriate discount rate. The discount rate represents the required rate of return or the cost of capital for the company. Let's assume a discount rate of 10%.

Using the formula method, we can calculate the present value (PV) of each cash flow and sum them up to obtain the NPV for each project:

For Project E:

PV = $40,000/(1 + 0.10)^1 + $50,000/(1 + 0.10)^2 + $60,000/(1 + 0.10)^3

PV = $36,363.64 + $41,322.31 + $45,454.55

PV = $123,140.50

For Project H:

PV = $60,000/(1 + 0.10)^1 + $50,000/(1 + 0.10)^2 + $40,000/(1 + 0.10)^3

PV = $54,545.45 + $41,322.31 + $30,251.14

PV = $126,118.90

Using the financial calculator method, we can input the cash flows and the discount rate to calculate the NPV directly. By entering the cash flows for each project and the discount rate of 10%, we find that the NPV for Project E is approximately $123,140.50 and the NPV for Project H is approximately $126,118.90.

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The value of x, considering the segment addition postulate in this problem, is given as follows:

x = -6.

The segment addition postulate is a geometry axiom that states that when a line segment is divided into a number of smaller segments, the total length is given by the sum of the lengths of each of the smaller segments.

For this problem, we have that two segments, with lengths x + 14 and x + 13, are added to form a segment with length of 15, hence the value of x is obtained as follows:

x + 14 + x + 13 = 15

2x + 27 = 15

2x = -12

x = -6.

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The slope of a line perpendicular to the line x + 6y = -24 is 6. This means that if we draw a line perpendicular to the given line, it will have a slope of 6.

To find the slope of a line perpendicular to the given line, we first need to determine the slope of the given line. The equation of the given line is in the form Ax + By = C, where A, B, and C are coefficients.

Let's rearrange the equation of the given line to slope-intercept form (y = mx + b), where m represents the slope:

x + 6y = -24

To isolate y, we can subtract x from both sides:

6y = -x - 24

Next, divide both sides by 6:

y = (-1/6)x - 4

Comparing this equation to y = mx + b, we can see that the slope (m) of the given line is -1/6.

The slope of a line perpendicular to another line is the negative reciprocal of the slope of the given line. The negative reciprocal of -1/6 can be found by flipping the fraction and changing the sign:

Slope of perpendicular line = -1 / (-1/6)

= -1 * (-6/1)

= 6

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[tex]{\huge{\fbox{\tt{\blue{ANSWER}}}}}[/tex]

______________________________________

The probability of answering a single problem correctly by randomly guessing is 1/4, since there are 4 answer choices and only one correct answer. Since the student randomly guessed the answer to both problems, the probability of answering both problems correctly is:

(1/4) x (1/4) = 1/16

Therefore, the probability that the student answered both problems correctly is 1/16.

8 men can paint the wall in 9 hours.

18 men would be required to paint the wall in 4 hours.

If 6 men can paint a wall in 12 hours, we can use the concept of inverse variation to determine the time taken by 8 men and the number of men required to paint the wall in 4 hours.

The time taken by 8 men to paint the wall is:

Since the number of men is inversely proportional to the time taken, we can set up a proportion to find the time taken by 8 men:

6 men ----- 12 hours

8 men ----- x hours

Using the property of inverse variation, we can write:

(6 men) × (12 hours) = (8 men) × (x hours)

Simplifying the equation:

72 = 8x

Dividing both sides by 8:

x = 9

The number of men required to paint the wall in 4 hours is:

Again, using the concept of inverse variation, we can set up a proportion to find the number of men required:

6 men ----- 12 hours

x men ----- 4 hours

Using the property of inverse variation, we can write:

(6 men) × (12 hours) = (x men) × (4 hours)

Simplifying the equation:

72 = 4x

Dividing both sides by 4:

x = 18

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Answer:

slope = [tex]\frac{3}{8}[/tex]

Step-by-step explanation:

calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 4, 1) and (x₂, y₂ ) = (4, 4) ← 2 points on the line

m = [tex]\frac{4-1}{4-(-4)}[/tex] = [tex]\frac{3}{4+4}[/tex] = [tex]\frac{3}{8}[/tex]

The calculated length AD in the circle is 13.92

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

The circle

The measure of angle in a semicircle is 90 degrees

This means that the triangle is right-angled

The length AD of the right triangle can be calculated using the following Pythagoras theorem

AD² = sum of squares of the legs

Using the above as a guide, we have the following:

AD² = (2 * 6.5)² + (5)²

Evaluate

AD² = 194

Take the square roots

AD = 13.92

Hence, the length AD is 13.92

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The required monthly payment to accumulate $28,000 in 12 years at a rate of 5.4% compounded monthly for an annuity is approximately

To find the required monthly payment to accumulate $28,000 in 12 years at a rate of 5.4% compounded monthly, we can use the formula for the future value of an ordinary annuity:

FV = P * (1 - (1 + r)⁺ⁿ) / r,

where:

FV is the future value of the annuity ($28,000),

P is the monthly payment we want to find,

r is the monthly interest rate (5.4% / 12 = 0.0045),

n is the total number of payments (12 years * 12 months = 144).

Plugging in the values, we have:

28000 = P * (1 - (1 + 0.0045)⁺¹⁴⁴) / 0.0045.

28000 = P * (1 - 0.5239) / 0.0045.

28000 = P * (0.4761) / 0.0045.

28000 = P * 105.8107.

p = 264.6235

P ≈ $264.62 (rounded to 2 decimal places)

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