Polygon PQRS is a scaled copy of polygon ABCD.


1. Name the angle in the scaled copy that corresponds to angle A BC.

2. Name the segment in the scaled copy that corresponds to segment AD.

3. What is the scale factor from polygon ABCD to polygon PQRS?

If the height of the card is 2.5 cm., the height of the actual card that Monica is purchasing is 3.75 inches.

Since the scale of the drawing is 1 cm: 1.5 in, we can use this proportion to find the actual height of the card.

Let h be the height of the actual card in inches. Then, we can set up the proportion:

1 cm / 1.5 in = 2.5 cm / h

Cross-multiplying, we get:

1 cm * h = 1.5 in * 2.5 cm

Simplifying, we get:

h = (1.5 in * 2.5 cm) / 1 cm

h = 3.75 inches

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Complete question is:

Monica is looking at a catalog to find thank you cards. In the scale drawing of the one she likes, 1 centimeter represents 1.5 inches. The height of the card in the scale drawing is shown below.

What is the height of the actual card she is purchasing?

The appropriate null hypothesis for this scenario is option b. The null hypothesis is a statement of no difference or no effect, and it assumes that any observed difference is due to chance. In this case, the null hypothesis would be that the average age of customers who buy BMX bicycles is less than or equal to 47. This can be written as:

H0: µ ≤ 47

where µ is the population mean age of customers who buy BMX bicycles.

The alternative hypothesis, which is the statement that we are trying to prove, would be that the average age of customers who buy BMX bicycles is greater than 47. This can be written as:

Ha: µ > 47

where Ha is the alternative hypothesis.

In summary, the appropriate null hypothesis for this scenario is:

H0: µ ≤ 4

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The function that relates the distance traveled, d, to the time, t is d(t) = 120t

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

Speed = s

Time = t0

The distance is calculated as

d = s * t

So, we have

d = st

Given that the train travels 360 kilometers in 3 hours.

We have

d = 360/3 * t

So, we have

d(t) = 120t

Hence, the function is d(t) = 120t and the graph is added as an attachment

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Complete question

A train leaves the station at time t0. Traveling at a constant​ speed, the train travels kilometers in hours.

Traveling at a constant speed, the train travels 360 kilometers in 3 hours.

(a) Write a function that relates the distance traveled, d, to the time, t.

(b). Graph it

The probability that a junior is taking physics, given they are in Algebra II, is approximately 0.3846 or 38.46%.

1. First, let's find the number of juniors taking only Algebra II and not physics. We do this by subtracting the number of juniors taking both courses from the total number of juniors taking Algebra II:
  468 (Algebra II) - 180 (both courses) = 288 (only Algebra II)

2. Now, we have two groups of juniors enrolled in Algebra II:
  - 288 juniors taking only Algebra II
  - 180 juniors taking both Algebra II and physics

3. Since we want to find the probability that a junior is taking physics, given they are in Algebra II, we'll focus on the group taking both courses.

4. To calculate the probability, divide the number of juniors taking both courses by the total number of juniors taking Algebra II:
  Probability = (number of juniors taking both courses) / (total number of juniors in Algebra II)
  Probability = 180 / (288 + 180)
  Probability = 180 / 468
  Probability ≈ 0.3846 or 38.46%

So, if one of the 650 juniors was picked at random and we know they are in Algebra II, the probability that they are also taking physics is approximately 38.46%.

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The area of the bottom of the pool is 84 square yards.

To start, we need to remember that area is a measure of how much surface is covered by a two-dimensional shape. In this case, we want to find the area of the bottom of the swimming pool. The bottom of the pool is a rectangular shape, and we can find its area by multiplying its length by its width.

We are given that the pool is 14 yards long and 6 yards wide, so we can plug those values into the formula for the area of a rectangle:

Area = length x width

Area = 14 yards x 6 yards

Area = 84 square yards

This means that if you were to measure the surface of the pool from above, you would find that it covers 84 square yards of space.

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Complete Question:

A swimming pool is 14 yards long and 6 yards wide. What is the area of the bottom of the pool?

The negative slope of the linear equation indicates that the number of violent crimes has decreased over the years. The intercept of the line at (0, 1,773,900) represents the number of violent crimes in 1993.

The scatter plot shows a negative linear relationship between the number of violent crimes and the years since 1993. As the number of years increases, the number of violent crimes decreases. The linear equation that best models this relationship is y = -31,256x + 1,773,900. This means that for every one-year increase since 1993, the number of violent crimes decreases by 31,256.

The y-intercept of 1,773,900 represents the number of violent crimes in 1993, the starting year of the data set. The slope of -31,256 indicates that the decrease in violent crimes over time is quite significant.

It is important to note that while the linear equation provides a good model for this data set, it does not necessarily mean that it can accurately predict the number of violent crimes in future years. Other factors not accounted for in the data set may influence the number of violent crimes in the future.

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Using percentages the number of people is who watch the fireworks is 647.

A percentage is a ratio out of hundred.

Since we have 492 people who choose to watch the fireworks from the castle and this is 76% of the people who watch the fireworks at all, how many people watch the fireworks altogether?

Now, percentage = number/total × 100 %

Now, we require the total number. Making the total number subject of the formula, we have that

total = number × 100 %/percentage

Since

So, substituting the values of the variables into the equation, we have that

total = number × 100 %/percentage

total = 492 × 100 %/76%

= 6.474 × 100 %

= 647.4

≅ 647

So, the number of people is 647.

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12 boys scored 8 points in the exam.

It is given that the table shows the midterm exam results for boys and girls in a class.

As we can see clearly in the table in the first column we have the number of boys, in the second column we have their exam score and in the last column, we have number of the girls.

As we can see 12 is encircled in the first column and in the same row and second column there is 8 present which means 12 boys scored 8 points in the exam.

Therefore, 12 boys scored 8 points in the exam.

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Given question is incomplete, the complete question is given below:

the midterm exam scores obtained by boys and girls in a class are listed in the table below:

what does the circled section represent?

a.  The first four nonzero terms are 6, 6x, -3×2, 9×3.

b.  f(x) = ∑n=0∞ (-3)n(x)n+1.

c.  Interval of convergence is (-∞, ∞).

a. The first four nonzero terms of the Maclaurin series for the given function are:

f(x) = 6 + 6x - 3×2 + 9×3 - 27×4 + ...

b. The power series can be written using summation notation as:

f(x) = ∑n=0∞ (-3)n(x)n+1

c. The interval of convergence of the power series is (-∞, ∞). This is because the power series is a polynomial and polynomials have an interval of convergence of (-∞, ∞).

The power series is a polynomial because it is a finite sum of terms of the form aₙ × xⁿ, where aₙ is a constant. Therefore, the power series converges for all values of x.

Complete Question:

a. Find the first four nonzero terms of the Maclaurin series for the given function.

b. Write the power series using summation notation.

c. Determine the interval of convergence of the series. f(x) = 6 e⁻³ˣ.

The first nonzero term of the Maclaurin series is ____.

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The bus company will have maximum revenue when there are 120 people on the charter bus.

What is the quadratic equation?

The solutions to the quadratic equation are the values of the unknown variable x, which satisfy the equation. These solutions are called roots or zeros of quadratic equations. The roots of any polynomial are the solutions for the given equation.

The revenue R for the bus company as a function of n can be expressed as follows:

For n < 80: R = 0 (since the company requires at least 80 people to operate a charter bus)

For n a 80: R = n(8 - 0.05(n - 80))

Simplifying the expression:

R = 8n - 0.05n² + 4n

R = -0.05n² + 12n

Therefore, the revenue of the bus company is a quadratic function of the number of people, with a negative coefficient for the quadratic term, indicating that the function has a maximum value.

This maximum value occurs at the vertex of the parabola, which can be found using the formula -b/2a, where a = -0.05 and b = 12:

n = -b/2a = -12/(2*(-0.05)) = 120

Thus, the bus company will have maximum revenue when there are 120 people on the charter bus.

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The solution to the equation 4√(x - 10) + 15 = 43 is x = 59.

A statement that affirms the equivalence of two expressions joined by the equals symbol "=" is known as an equation.

Yes, your steps are correct. Here's the solution to the equation:

4√(x - 10) + 15 = 43

To isolate the radical term on one side of the equation, we first subtract 15 from both sides:

4√(x - 10) = 28

Next, we divide both sides of the equation by 4:

√(x - 10) = 7

To solve for x, we square both sides of the equation:

(√(x - 10))² = 7²

Simplifying the left-hand side of the equation, we get:

x - 10 = 49

Adding 10 to both sides of the equation, we get:

x = 59

Therefore, the solution to the equation 4√(x - 10) + 15 = 43 is x = 59.

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The situation of popcorn scooping at Pineville County Fair can be modeled as a linear relationship.

A linear relationship is a type of relationship between two variables that can be represented by a straight line. In this case, the two variables are the amount of popcorn in the container and the number of bags filled. As Vivian scoops popcorn from the container, the amount of popcorn decreases, and the number of bags filled increases. This creates a linear relationship between the two variables.

To model this relationship, we can use the equation of a straight line, which is y = mx + b, where y represents the dependent variable (in this case, the number of bags filled), x represents the independent variable (the amount of popcorn in the container), m represents the slope of the line, and b represents the y-intercept.

In this situation, the slope represents the rate at which Vivian is filling bags with popcorn, and the y-intercept represents the initial number of bags filled when the container is full. By analyzing the data, we can estimate the slope and y-intercept and use the linear model to make predictions about the amount of popcorn remaining in the container and the number of bags that can still be filled.

Overall, the linear relationship provides a useful tool for understanding and managing the popcorn scooping process at the Pineville County Fair.

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To identify the correct scatter plot for variables y1 and x1, you need to analyze the data and look for a clear pattern in the relationship between the two variables.

What is scatter plots?

A scatter plot is a type of data visualization that displays the relationship between two variables.

In a scatter plot, each point represents a pair of values, one for each of two variables. The horizontal axis represents the values of one variable (in this case, x1), and the vertical axis represents the values of the other variable (y1).

The scatter plot can show the relationship between the two variables. If there is a positive correlation, the points will tend to cluster in a line that slopes up and to the right. If there is a negative correlation, the points will cluster in a line that slopes down and to the right. If there is no correlation, the points will be scattered randomly.

To determine which scatter plot is correct, you need to examine the data and see which plot matches the pattern of the data. If there is a clear positive or negative correlation, the correct plot will show a line sloping up or down. If there is no correlation, the correct plot will show a scatter of points with no clear pattern.

In summary, to identify the correct scatter plot for variables y1 and x1, you need to analyze the data and look for a clear pattern in the relationship between the two variables.

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Option c is correct.

The gradual shifting or movement of a time series to relatively higher or lower values over a longer period of time is called a trend. Therefore, option c. "a trend" is the correct answer.

Periodicity refers to the tendency of a time series to exhibit patterns that repeat at regular intervals, such as daily, weekly, or seasonal cycles.

Regression refers to the statistical method used to analyze the relationship between two or more variables.

A cycle refers to a repeating pattern of fluctuations in a time series that are not necessarily regular or periodic.

Hence, option c is correct.

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Answer:

40 inches.

Step-by-step explanation:

If you want to measure how much fence you need to enclose a rectangle, you have to add up the lengths of all its sides. That's called the perimeter. The easiest way to find it is to use this handy-dandy formula:

Perimeter = 2 (length + width) units

where length and width are how long the rectangle's sides are.

For example, let's say you have a rectangle that is 12 inches long and 8 inches wide. To find its perimeter, you just plug in those numbers into the formula:

Perimeter = 2 (12 + 8) inches

Perimeter = 2 (20) inches

Perimeter = 40 inches

Ta-da! The perimeter of the rectangle is 40 inches.

The present value of the ordinary annuity is 29569 and the periodic payment R is 669.

What is the present value?

In economics and finance, present value, also known as present discounted value, is the value of an expected income stream determined as of the date of valuation.

Here, we have

Given: Suppose payments were made at the end of each month into an ordinary annuity earning interest at the rate of 9%/year compounded monthly. If the future value of the annuity after 10 years is $50,000.

We have to find the present value of the ordinary annuity.

We use the ordinary annuity formula here

A = P{(1+r)ⁿ-1}/r

P = 1200

n = 16

r = 5.5% = 0.055

A = 1200{(1+0.055)¹⁶-1}/0.055

A = 29569

Future value of annuity = 50000

Interest rate per period = interest rate per annum/no.of payment per annum

= 9%/12 = 0.75%

Number of period = 120

Each deposit = FVA/{(1+r)ⁿ-1}/r

=  50000/{(1+0.75%)¹²⁰-1}/0.75%

= 258

Now, P = 18,000, r = 10, x = 6, n = 6

Periodic payment (R) = P(r/n)×(1+r/n)ⁿˣ/(1+r/n)ⁿˣ-1

= 18000(0.167)(1+0.167)³⁶/(1+0.167)³⁶-1

R = 669

Hence, the present value of the ordinary annuity is 29569 and the periodic payment R is 669.

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The length of OP is √(3) and the Pythagorean Theorem is used to find it.

A theorem is a statement that has been proven to be true based on rigorous mathematical reasoning and evidence. It is a fundamental concept in mathematics and plays a central role in building the structure of mathematical knowledge. Theorems are often used as a basis for further mathematical analysis and the development of new theories and applications.

The length of OP can be found using the Pythagorean Theorem.

By the Pythagorean Theorem, we know that:

MN² + NO² = MO²

Since angle MNP is congruent to angle ONP, we know that triangles MNP and ONP are similar. Therefore, we can set up a proportion:

MN/NP = ON/NP

Simplifying this proportion, we get:

MN = ON

Substituting this into the equation for MO², we get:

MN²  + NO²  = MO²

2(MN² ) = MO²

Since MP is given as 2, we can use the Pythagorean Theorem in triangle MOP to find OP:

MO² = MP² + OP²

2(MN²) = MP² + OP²

2(MN²) - MP² = OP²

2(2²) - 1² = OP²

3 = OP²

OP = √3

Therefore,

The length of OP is √(3) and the Pythagorean Theorem is used to find it.

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The given relation is a set of ordered pairs {(1, 1), (2, 2), (3, 5), (4, 10), (5, 15)}. The first element of each pair represents the input or domain value, and the second element represents the output or range value.

The domain of the relation is the set of all first elements of the ordered pairs, which is {1, 2, 3, 4, 5}. The range of the relation is the set of all second elements of the ordered pairs, which is {1, 2, 5, 10, 15}.

To check whether the relation is a function or not, we need to ensure that each input value (i.e., element of the domain) is associated with a unique output value (i.e., element of the range). In other words, there should not be more than one ordered pair with the same first element.

In this case, each input value is associated with a unique output value, so the relation is indeed a function. Specifically, it is a function from the set of integers {1, 2, 3, 4, 5} to the set of integers {1, 2, 5, 10, 15}.

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4 times a number can be written as the sum of two equal addends because the value of the addends is equal to the value of the number divided by 4.

To start with, let's define some terms. An addend is a number that is added to another number to form a sum. So, for example, in the equation 2 + 3 = 5, 2 and 3 are addends, and 5 is the sum.

Now, let's consider the statement that 4 times a number can be written as the sum of two equal addends. In mathematical terms, we can write this as:

4x = 2y + 2y

Here, x represents the number we're starting with, and y represents the addends we're trying to find. We're saying that if we multiply x by 4, we can express that product as the sum of two equal addends, each equal to y.

To see why this is true, let's simplify the equation:

4x = 2y + 2y

4x = 4y

We can divide both sides of the equation by 4 to get:

x = y

This tells us that the value of x (the number we started with) is equal to the value of y (each of the addends). So, if we take y and add it to itself, and then multiply the result by 2, we get the same value as if we had multiplied x by 4.

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Radioactive particles 2000  the sample have 80 years from today.

We have the information:

There is 2000 radioactive particles in a sample.

and,  your grandmother measured 4000 radioactive particles in it 80 years ago.

We have to find the samples of radioactive particles present it in 80 years from today.

By the definition of Half line,  The half line of the item is 80 years.

=> 80 years from now, means that another half life is achieved means, 2000 will reduced to half on decay.

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The probability, to the nearest thousandth, of getting exactly 5 tails is 0.031

The likelihood of getting tails on a single flip of a reasonable coin is 0.5. To discover the likelihood of getting precisely 5 tails in 5 flips, we utilize the binomial likelihood equation:

P(X = k) = (n select k) * [tex]p^k * (1-p)^(n-k)[/tex]

where:

n = 5 (number of trials)

k = 5 (number of victories)

p = 0.5 (likelihood of tails on a single flip)

Stopping within the values, we get:

P(X = 5) = (5 select 5) * [tex]0.5^5 * (1-0.5)^(5-5)[/tex]

= 1 * 0.03125 * 1

= 0.03125

So the likelihood of getting precisely 5 tails in 5 flips is around 0.031 (adjusted to the closest thousandth). 

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The average speed of the eagle who traveled 6km in 400 seconds in meters per second is 15.

Average speed of the eagle = total distance / total time taken

Total distance traveled by the eagle = 6km

Total time taken by an eagle to travel 6 km = 400 s

To convert 6 km into m

1 km = 1000 m

6 km = 6 × 1000m

6 km = 6000 m

Average speed of the eagle = 6000/400

Average speed of the eagle = 15 meter per second

Hence, the average speed of the eagle is 15 meter per second .

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The statement "P(Type II Error) = 1 - P(Power) = 1 - 0.9228 = 0.0772" is correct, assuming a significance level of α = 0.05.

The power of a statistical test is the probability of correctly rejecting a null hypothesis when it is false (i.e., detecting a true effect). The power of a test is affected by factors such as the sample size, effect size, significance level, and variability in the data.

On the other hand, a Type II error occurs when we fail to reject a null hypothesis that is actually false (i.e., we do not detect a true effect). In other words, it is the probability of accepting a null hypothesis when it is false.

The statement P(Power) + P(Type II Error) = 1 is incorrect. It should be P(Power) + P(Type II Error) = 1 - α, where α is the significance level of the test. The significance level is the probability of rejecting a null hypothesis when it is true (i.e., the probability of making a Type I error).

Assuming a significance level of α = 0.05, if the power of a test is 0.9228, then the probability of making a Type II error is:

P(Type II Error) = 1 - P(Power)

= 1 - 0.9228

= 0.0772

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As calculated t-value (-7.07) is less than the critical t-value (-1.969), we reject the null hypothesis and conclude that the mean age of those playing slot machines is significantly less than those playing roulette. So, we can conclude that the mean age of those playing slot machines is less than those playing roulette.

To determine whether the mean age of those playing slot machines is less than those playing roulette, we can perform a two-sample t-test.

The null hypothesis (H0) is that there is no difference in the mean age between the two groups, and the alternative hypothesis (Ha) is that the mean age of those playing slot machines is less than those playing roulette.

We can calculate the t-test statistic as follows:

t = (x₁ - x₂) / √ (s₁²/n₂ + s₂²/n₂)

Where: x₁ = mean age of those playing slot machines x₂ = mean age of those playing roulette s₁= standard deviation of the sample of those playing slot machines s₂ = standard deviation of the sample of those playing roulette n₁ = sample size of those playing slot machines n₂ = sample size of those playing roulette

Substituting the given values, we get:

t = (50 - 55) / √(25/100 + 36/100) t = -5 / √(0.25 + 0.36) t = -5 / 0.707 t = -7.07 (approx)

Using a t-table with (100-1) + (150-1)= 249 degrees of freedom and a significance level of 0.05 (two-tailed), we find the critical t-value to be ±1.969.

Since our calculated t-value (-7.07) is less than the critical t-value (-1.969), we reject the null hypothesis and conclude that the mean age of those playing slot machines is significantly less than those playing roulette.

Therefore, we can conclude that the mean age of those playing slot machines is less than those playing roulette.

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a) Height at 2, h(2) = 64 feet

b) The rocket will hit the ground 3 seconds after it was launched.

a. To find h(2), we simply substitute t = 2 in the given equation:

h(2) = -16[tex](2)^{2}[/tex] + 48(2) = 64 feet

This means that 2 seconds after the bottle rocket was launched, it had reached a height of 64 feet.

b. We know that the rocket will hit the ground when its height h(t) equals zero. So, we need to solve the equation:

-16[tex]t^{2}[/tex] + 48t = 0

We can factor out -16t to get:

-16t(t - 3) = 0

This gives us two possible solutions:

t = 0 (which corresponds to the time when the rocket was launched)

t = 3 (which corresponds to the time when the rocket hits the ground)

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Answer:

Step-by-step explanation:

Part A:

This data modeling an exponential function because the y-coordinate values are increasing by multiplying the previous value by 2, which is the common ratio.

Part B:

To write a function to represent the data, we can use the formula for an exponential function: y = a(b)^x, where a is the initial value, b is the common ratio, and x is the input value (station number in this case).

Using the given data points, we can write two equations:

2 = a(b)^1

16 = a(b)^4

Dividing the second equation by the first equation, we get:

8 = (b)^3

Taking the cube root of both sides, we get:

b = 2

Substituting b = 2 in the first equation, we get:

2 = a(2)^1

2 = 2a

a = 1

Therefore, the function that represents the data is: y = 1(2)^x, or y = 2^x.

Part C:

To find the average rate of change between station 2 and station 4, we need to calculate the slope of the line passing through the points (2, 4) and (4, 16).

Using the formula for slope, we get:

slope = (y2 - y1) / (x2 - x1)

slope = (16 - 4) / (4 - 2)

slope = 6

Therefore, the average rate of change between station 2 and station 4 is 6 minutes per station.

The two nontrivial function that satisfy the equation f(g(x)) = -5/(x+4)⁴ is f(x) = -5/x⁴ and g(x) = x + 4.

To see why these functions work, let's substitute g(x) into f(x) to get f(g(x))

f(g(x)) = f(x + 4) = -5/(x+4)⁴

So, we have shown that f(g(x)) = -5/(x+4)⁴ as required.

It's worth noting that there may be other nontrivial functions that satisfy the given equation. However, the functions f(x) = -5/x⁴ and g(x) = x + 4 are a simple and straightforward example.

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The greatest common divisor of each of these pairs of integers are

a) 1    b)  1    c) 12   d)  1     e)  3   g)  1     h)  2    i) 1  

f) 0 is not a positive integer, so it doesn't have a prime factorization.

The greatest common divisor (GCD), also known as the highest common factor (HCF), of two or more integers is the largest positive integer that divides each of the integers without a remainder.

To find the GCD we need to write each number as a product of prime factorization and then we need to find out the common factors which is greatest among them.

a) 10 = 2 × 5,

11 is prime

GCD(10, 11) = 1 (no common factors)

b) 21 = 3 × 7,

44 = 2 × 2 × 11

GCD(21, 44) = 1 (no common factors)

c) 36 = 2 × 2× 3 × 3

48 = 2 × 2 × 2 × 2 × 3

GCD(36, 48) = 2 × 2 × 3 = 12

d) 34 = 2  × 17,

55 = 5 × 11

GCD(34, 55) = 1 (no common factors)

e) 117 = 3 × 3 × 13,

213 = 3 × 71

GCD(117, 213) = 3

f) 0 is not a positive integer, so it doesn't have a prime factorization.

g) 123 = 3 × 41, 2347 is prime

GCD(123, 2347) = 1 (no common factors)

h) 3454 = 2 × 1727,

4666 = 2 × 2333

GCD(3454, 4666) = 2

i) 9999 = 3 × 3 × 11 × 101,

11111 = 41 × 271

GCD(9999, 11111) = 1 (no common factors)

Therefore,

The greatest common divisor of each of these pairs of integers are

a) 1    b)  1    c) 12   d)  1     e)  3   g)  1     h)  2    i) 1  

f) 0 is not a positive integer, so it doesn't have a prime factorization.

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