Find and simplify the expression if f(x) = x² + 4

f(x-3) =? simplify

The number of farms whose land and building values are between $1,200 and $1,400 is given as follows:

50 farms.

The Empirical Rule states that, for a normally distributed random variable, the symmetric distribution of scores is presented as follows:

Considering the mean of $1,300 and the standard deviation of $100, measures between $1,200 and $1,400 are within one standard deviation of the mean, hence the percentage is of 68%.

The total amount is of 74 farms, hence the amount relative to 68% of 74 is of:

0.68 x 74 = 50 farms. (rounded).

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The largest N such that the probability that there are at least N survivors at age 95 is at least 90% is approximately 136.43.

The normal approximation can be used to estimate the number of survivors at a given age when the mortality follows the Standard Ultimate Life Table. The normal approximation assumes that the number of survivors follows a normal distribution.

Let X be the number of survivors at age 95. Then, the mean (μ) and standard deviation (σ) of X can be calculated using the following formula:

μ = 4,000 * e⁽⁻⁰.⁰⁷³⁶⁽⁹⁵⁻²⁵⁾⁾

σ = √(4,000 * (1 - e⁽⁻⁰.⁰⁷³⁶⁽⁹⁵⁻²⁵⁾⁾) * e⁽⁻⁰.⁰⁷³⁶⁽⁹⁵⁻²⁵⁾⁾)

Next, we can find the value of N such that P(X >= N) >= 0.9 using the standard normal distribution.

z = (N - μ) / σ

P(X >= N) = 1 - P(X < N) = 1 - Φ(z)

where Φ(z) is the cumulative distribution function of the standard normal distribution.

We want to find the largest N such that P(X >= N) >= 0.9, so we need to find the smallest z such that Φ(z) <= 0.1. The value of z can be found using a standard normal table or a calculator with normal distribution functions.

With a calculator, we get that z = 1.28. So, N = μ + z * σ.

Plugging in the values we calculated earlier, we get:

N = 4,000 * e⁽⁻⁰.⁰⁷³⁶⁽⁹⁵⁻²⁵⁾⁾ + 1.28 * √(4,000 * (1 - e⁽⁻⁰.⁰⁷³⁶⁽⁹⁵⁻²⁵⁾⁾) * e⁽⁻⁰.⁰⁷³⁶⁽⁹⁵⁻²⁵⁾⁾)

N = 4,000 * e⁽⁻⁰.⁰⁷³⁶⁽⁷⁰⁾⁾ + 1.28 * √(4,000 * (1 - e^⁽⁻⁰.⁰⁷³⁶⁽⁷⁰⁾) * e^⁽⁻⁰.⁰⁷³⁶⁽⁷⁰⁾⁾

N = 4,000 * 0.0337 + 1.28 * √(4,000 * (1 - 0.0337) * 0.0337)

N = 132.8 + 1.28 * √(4,000 * 0.966 * 0.0337)

N = 132.8 + 1.28 * √(13.97376)

N = 132.8 + 3.63323

N ≈ 136.43

So, the largest N such that the probability that there are at least N survivors at age 95 is at least 90% is approximately 136.43.

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The system of equations is solved by graphing as shown in the image, where the solution is (1, 2).

A system of equations can be solved by graphing each line that represents each equation, then find the point where they both intercept.

Thus, the coordinates of the point where the two linear equations intercept will be the solution of the system of equations.

Given the system, 9x - 7y = -5 is the red line while -3x + 7y = 11 represents the blue line. Both intercept at (1, 2), which is the solution of the equations.

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"What is the area of the floor in this classroom?" is not a statistical question.

Statistical Reasoning is the first course in statistics for students whose college and career paths require knowledge of the fundamentals of the collection, analysis, and interpretation of data.

All statistical questions contain gathering numerical statistics (normally from a set of human beings) after which studying it to attract conclusions approximately the reviews of human beings of a positive phenomenon because the statistics vary relying on the reaction of every person.

This method isn't required to decide the location of the ground due to the fact this has a completely unique solution and might certainly be located via way of means of measuring the peak and width of the school room after which multiplying each number.

therefore, this doesn't mean accumulating loads of statistics and the statistics does now no longer vary.

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Answer:

B. 60

Step-by-step explanation:

Since the digits 1, 1, 1, 2, 2, 3 are repeated, we use the concept of permutations with repetition. In this case, we can choose the first digit to be any one of the three, the second digit to be any one of the three, and so on. Therefore, the total number of distinct 6-digit numbers that can be made is 3 × 3 × 3 × 3 × 3 × 3 = 729.

However, we need to exclude the numbers that start with a 0 (i.e., numbers like 011112 or 001122). Therefore, the final answer is 729 - 3 = 726, which is the number of 6-digit numbers that do not start with a 0. The number of 6-digit numbers that start with a 0 is 3 (111120, 111202, 112102), so the total number of distinct 6-digit numbers is 726 - 3 = 60.

The inequality describing the given problem is x/5 ≥ 2.8 and Troy should at least jog for 14 miles in total.

A relationship between two expressions or values that are not equal to each other is called inequality.

Given that, Troy set a goal for the total distance he wants to jog this week. He divided his goal evenly among the 5 jogs he planned for the week. Troy determined that each jog should be at least 2.8 miles to meet his goal.

x represent how many miles Troy wants to jog in all. We need to find an inequality describes the problem.

Since, he has divided his goal into 5 jogs and in total he did x jogs, therefore, jog for 1 day = x/5

Now, he set that each jog should be at least 2.8 miles to meet his goal.

That mean, he can jog 2.8 miles or more than it but not less than it,

Therefore, inequality will be,

x/5 ≥ 2.8

Now, finding x,

Multiply both sides by 5,

x ≥ 14

Hence, the inequality describing the given problem is x/5 ≥ 2.8 and Troy should at least jog for 14 miles in total.

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The answers for each polynomial are:

a) 4x³ - 8: degree is 3, and the number of terms is 2.

b) 2x⁴ - 7x² - 5x + 1: degree is 4, and there are 4 terms.

c) x³ +5x² + 28 - x:   standard form is: x³ +5x²  - x + 28 And the leading coefficient is 1.

d) 24 - x³ + x:   standard form is:  -x³ + x + 24 and the leading coefficient is -1.

The degree of a polynomial is equal to the maximum exponent in the variable, and the number of terms is just the number of "elements" separated by the symbols + or -.

For the first one:

4x³ - 8

The degree is 3, and the number of terms is 2.

For the second one:

2x⁴ - 7x² - 5x + 1

The degree is 4, and there are 4 terms.

In the next part you need to write them in standard form and write the leading coefficient. The leading coefficient is the coefficient on the term with the largest exponent.

For the first one:

x³ +5x² + 28 - x

The standard form is:

x³ +5x²  - x + 28

And the leading coefficient is 1.

And the last one is:

24 - x³ + x

The standard form is:

-x³ + x + 24

The leading coefficient is -1.

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Answer:

C (51)

Explanation

The probability that the word formed STATISTICS will be; 1/10! = 1/3628800

The probability of an occurrence is a figure that represents how likely it is that the event will take place. In terms of percentage notation, it is expressed as a number between 0 and 1, or between 0% and 100%. According to the probability formula, the likelihood that an event will occur is equal to the proportion of favourable outcomes to all outcomes.

The total number of tiles in a bag is; 10

WE are given that once a tile is drawn, we will not place the tile back in the bag.

We should find the probability that randomly selected tiles spell the word, STATISTICS, that is a 10 letter word.

Now when we draw the first tile,

1 st tile = 1/10

Now there are only 9 tiles left.

2nd tile probability = 1/9

Now only 8 tiles left then

3rd tile probability = 1/8

Therefore the probability that the word formed is STATISTICS would be

= 1/10 * 1/9 * 1/8 * 1/7 * 1/6 * 1/5 * 1/4 * 1/3 * 1/2

= 1/10! = 1/3628800

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The density function of Y = | X-1 | is given by:

f_Y(y) = {f_X(y + 1), if 0 < y < 1;

        {f_X(1 - y), if 1 < y < 2;

        {0, otherwise.

Continuous distribution is a type of probability distribution that describes the likelihood of a variable taking on any value within a given range, rather than just specific values

If X ~Unif (-1,0), then the density function of Y is given by:

f_Y(y) = {1/2, if 0 < y < 1;

        {1/2, if 1 < y < 2;

        {0, otherwise.

Therefore, Y ~Unif (0,2).

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Answer:

Step-by-step explanation: To calculate the total amount of money Paul will have saved after three years, we can use the formula for compound interest:

A = P * (1 + r/n)^(n*t)

Where:

A = the total amount after t years

P = the initial principal, which is $150

r = the annual interest rate, which is 2.5% or 0.025

n = the number of times the interest is compounded per year, which is 12 since it is compounded monthly

t = the number of years, which is 3

Substituting the values into the formula, we get:

A = 150 * (1 + 0.025/12)^(12*3)

= 150 * 1.081567

= $162.23

Therefore, Paul will have saved up $162.23 after three years have passed.

9¹⁰ can be expressed as base 4 with 22 and 15¹⁰ can be expressed as 33.

An expression is combination of variables, numbers and operators.

To change from base 10 to base 4, we need to express each number in terms of powers of 4. Here's how you can do this for each number:

9¹⁰ in base 4:

9 in base 10 can be expressed as 22

Base 4

So, (22)¹⁰ = 4¹⁰ x 2¹⁰ = 1048576 x 1024

= 1073741824 in base 10.

15¹⁰ in base 4

15 in base 10 can be expressed as 33 in base 4

Hence, 9¹⁰ can be expressed as base 4 with 22 and 15¹⁰ can be expressed as 33.

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Answer: The annual percentage yield (APY) is the total amount of interest earned on an investment over a year, expressed as a percentage of the initial investment. The annual interest rate is simply the interest rate per year, expressed as a percentage.

To convert the APY to the annual interest rate, we can divide the APY by the number of times the interest is compounded in a year. If the interest is compounded monthly, then the number of times the interest is compounded in a year is 12.

So, the annual interest rate for the account is given by:

Annual interest rate = APY / number of times compounded in a year

= 5.9% / 12

= 0.49%

Therefore, the annual interest rate for the account is 0.49%.

Step-by-step explanation:

Yes, Liam is correct as the graph depicts a positive correlation as the temperature increases the ice cream sales also increases.

A correlation between two variables shows a statistical connection between them. Causation is the process whereby a change in one variable causes a change in another.

While conducting research, you may have come across the proverb "correlation doesn't imply causality." Although correlation and causality are related ideas, understanding how they differ helps improve your capacity to assess and critically analyze scientific data.

Armonte said the graph depicts causation and yes Armonte is correct as causation means that changes in one variable bring about changes in the other; there is a cause-and-effect relationship between variables. The two variables are correlated with each other and there is also a causal link between them.

So here the change in the temperature brought about the change in the ice cream sales. As the temperature rose the ice cream sales too started increasing.

Now two reasons as to why this represents causation instead of correlation:

Therefore, the graph shows a positive correlation, but it represents causation.

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Answer:

300 cm^2

Step-by-step explanation:

An area of a triangle is b*h/2.

Therefore, plug in the base and height into the equation.

24cm * 25cm / 2 = area

600cm^2 / 2 = area

300cm^2 = area

Answer:

Step-by-step explanation:

angle DGF

The theoretical probability of rolling a 4 on the die is 0.0647

The binomial distribution is a type of probability distribution that predicts the likelihood of obtaining one of two outcomes given a set of inputs. It summarizes the number of tries where each trial has the equal chance of producing the same result.

The formula for Binomial Distribution is given by

P ( x ) = [ n! / ( n - x )! x! ] pˣqⁿ⁻ˣ  

where

n = number of trials

x = number of successes

p = probability of getting a success in one trial

q = probability of getting a failure in one trial

q = 1 - p

Given data ,

Let the number of trials n = 20

Let the probability of getting a 4 on the die be = 1/6

So , the value of p = 1/6

And , the probability of getting a failure q = 5/6

So , theoretical probability of rolling a 4 on this die = P ( x = 4 )

And , the Binomial Distribution is given by

P ( x = 6 ) = [ 20! / ( 20 - 6 )! 6! ] ( 1/6 )⁶ ( 5/6 )¹⁴

On simplifying the equation , we get

P ( x = 6 ) = [ 20 x 19 x 18 x 17 x 16 x 15 / 6 x 5 x 4 x 3 x 2 x 1 ) ( 1/6 )⁶ ( 5/6 )¹⁴

On further simplification , we get

P ( x = 6 ) = 0.0647

P ( x = 6 ) =  6.047 %

Hence , the probability of rolling a 4 is 0.0647

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The difference in height of the two checkpoints is 3487 feet.

The term above mean sea level (AMSL) refers to the elevation (on the ground) or altitude (in the air) of any object, relative to the average sea level datum.

Given here: The table containing the altitude of different checkpoints in a race.

Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum.

The altitude of checkpoint 1 is -164 and Checkpoint 2 as 3487

Thus Difference in the height of the two checkpoints is

3487-(-164)

3651 feet lower.

If the top of a hill rises 291 feet above checkpoint 1 we get

-164+291=127 feet

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Reduced the equation to one of the standard forms

(a) z²/36 = 4x²/36 + 9y²/36 + 1

(b) x = 2y² + 3z

(c) (x + y + 2z)²

(d) (x - y + z)²

It is represented by an equal sign (=) and is used to solve for unknown values or to describe relationships between variables. Equations can be simple or complex, involving basic arithmetic operations or advanced mathematical concepts like trigonometry and calculus.

An equation can be used to solve for a single unknown value, for example, the equation 2x + 3 = 7 can be solved for x by subtracting 3 from both sides, giving us 2x = 4 and then dividing both sides by 2, giving us x = 2. In this example, x = 2 is the solution to the equation.

(a) The equation z² = 4x² + 9y² + 36 can be reduced to the standard form of an ellipsoid by dividing both sides by 36:

z²/36 = 4x²/36 + 9y²/36 + 1

This is the equation of an ellipsoid with center at the origin and semi-axes of length 3, 3/2, and 6, respectively. The surface is a solid and is classified as an oblate ellipsoid.

(b) The equation x = 2y² + 3z² is a standard parabolic cylinder equation. The surface is a cylinder and is classified as a parabolic cylinder.

(c) The equation 4x² + y² + 4z² - 4y - 24z + 36 = 0 can be reduced to the standard form of an ellipsoid by dividing both sides by 36:

x² + y² + 4z² - 4y - 24z + 36 = 0

= (x + y + 2z)²

This is the equation of an ellipsoid with center at the origin and semi-axes of length 3, 3, and 6, respectively. The surface is a solid and is classified as an oblate ellipsoid.

(d) The equation x² - y² + z² - 4x - 2y - 2z = 0 can be reduced to the standard form of a hyperboloid of two sheets by subtracting 1 from both sides:

x² - y² + z² - 4x - 2y - 2z + 1 = 1

= (x - y + z)²

This is the equation of a hyperboloid of two sheets with center at the point (-2, -1, -1) and semi-axes of length √2, √2, and √6, respectively. The surface is a solid and is classified as a hyperboloid of two sheets.

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After reducing the equation to one of the standard forms, the equations will be (a) z²/36 = 4x²/36 + 9y²/36 + 1, (b) x = 2y² + 3z, (c) (x + y + 2z)², and (d) (x - y + z)²

It is represented by an equal sign (=) and is used to solve for unknown values or to describe relationships between variables. Equations can be simple or complex, involving basic arithmetic operations or advanced mathematical concepts like trigonometry and calculus.

An equation can be used to solve for a single unknown value, for example, the equation 2x + 3 = 7 can be solved for x by subtracting 3 from both sides, giving us 2x = 4 and then dividing both sides by 2, giving us x = 2. In this example, x = 2 is the solution to the equation.

(a) The equation z² = 4x² + 9y² + 36 can be reduced to the standard form of an ellipsoid by dividing both sides by 36:

z²/36 = 4x²/36 + 9y²/36 + 1

This is the equation of an ellipsoid with center at the origin and semi-axes of length 3, 3/2, and 6, respectively. The surface is a solid and is classified as an oblate ellipsoid.

(b) The equation x = 2y² + 3z² is a standard parabolic cylinder equation. The surface is a cylinder and is classified as a parabolic cylinder.

(c) The equation 4x² + y² + 4z² - 4y - 24z + 36 = 0 can be reduced to the standard form of an ellipsoid by dividing both sides by 36:

x² + y² + 4z² - 4y - 24z + 36 = 0

= (x + y + 2z)²

This is the equation of an ellipsoid with center at the origin and semi-axes of length 3, 3, and 6, respectively. The surface is a solid and is classified as an oblate ellipsoid.

(d) The equation x² - y² + z² - 4x - 2y - 2z = 0 can be reduced to the standard form of a hyperboloid of two sheets by subtracting 1 from both sides:

x² - y² + z² - 4x - 2y - 2z + 1 = 1

= (x - y + z)²

This is the equation of a hyperboloid of two sheets with center at the point (-2, -1, -1) and semi-axes of length √2, √2, and √6, respectively. The surface is a solid and is classified as a hyperboloid of two sheets.

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The required events E and H are not mutually exclusive, because they can both occur at the same time.So  D - No, because P(E∩H) = 0.20 is correct.

The events E and H are not mutually exclusive, because they can both occur at the same time. In other words, a student can have both brown eyes and brown hair.

The probability that a student has both brown eyes and brown hair, P(E∩H), can be found using the formula:

P(E∩H) = P(E) + P(H) - P(E or H)

where P(E) is the probability of having brown eyes, P(H) is the probability of having brown hair, and P(E or H) is the probability of having either brown eyes or brown hair.

Given that:

P(E) = 0.35

P(H) = 0.45

P(E or H) = 0.60

So,

P(E∩H) = 0.35 + 0.45 - 0.60 = 0.20

So, the answer is D - No, because P(E∩H) = 0.20.

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Answer:

1/36

Step-by-step explanation:

above is the answer

Answer:

y=2/5x+1

Step-by-step explanation:

Answer:

y = 2/5 x + 1

Step-by-step explanation:

The slope is the change in y over the change in x

[tex]\frac{3-1}{5-0}[/tex] = [tex]\frac{2}{5}[/tex]

slope: [tex]\frac{2}{5}[/tex]

The y-intercept is 1.  When x = 0, the y is the intercept. (0,1)

63, 69, 75 and 81 is the first four terms of the seqence

Given the recursive formula of the given sequence

an = 63 + (n - 1)*6

We need to determine the first four terms of the sequence

When n = 1;

a1 = 63 + (1 - 1)*6

a1 = 63

When n = 2;

a2 = 63 + (2 - 1)*6

a2 = 69

When n = 3;

a3 = 63 + (3 - 1)*6

a3 = 75

When n = 4;

a4 = 63 + (4 - 1)*6

a4 = 81

Hence the first four terms of the sequence are 63, 69, 75 and 81.

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The independent variable affects the dependent variable. The correct option is B.

A variable is something whose value can change and is not fixed. Typically, the letters x, y, z, etc. are used to indicate variables. (b) Constants: An object whose value is fixed for the current circumstance is referred to as a constant. The constant's value may not be known, but we do know that it is fixed.

A variable is an object that you are trying to measure. It has two types; independent and dependent variables. An independent variable is a variable that is not affected b other variables.

A dependent variable on the other hand is a variable that depends on other variables. Suppose you want to know the quality of sleep of the students in their academic performance. The quality of sleep is the independent variable and academic performance is the dependent variable.

The complete question is given below.

What is the relationship between the independent variable and the dependent variable?

a. The dependent variable affects the independent variable.

b. The independent variable affects the dependent variable.

c. Both the independent variable and the dependent variable affect each other.

d. Neither the dependent variable nor the independent variable affects each other.

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The combination of the difference of the functions (g - f)(x), where; f(x) = 8·x² + 16·x + 6 and g(x) = x³ - 3·x² - 9 is; x³ - 11·x² - 16·x - 15

The correct option is option C

C) x³ - 11·x² - 16·x - 15

The combinations of functions can be found as follows;

Addition; (f + g)(x) = f(x) + g(x)

Subtraction; (f - g) = f(x) - g(x)

Multiplication; (f·g) = f(x) × g(x)

Division; (f/g)(x) = f(x)/g(x)

What is a function?

A function is a rule or law that maps an input variable into an output variable such that each element in the set of input variable is mapped to exactly one element in the set of the output variables.

The f(x) = 8·x² + 16·x + 6

g(x) = x³ - 3·x² - 9

Therefore;

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

(g - f)(x) = x³ - 3·x² - 9 - (8·x² + 16·x + 6) = x³ - 11·x² - 16·x - 15

The correct option is therefore option C

C) x³ - 11·x² - 16·x - 15

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Answer: (x, y) = (5/4, 2).

The given system of equations is:

4x - y = 3

3x + y = 4

We can solve for x and y using either substitution or elimination method.

By substitution, we can solve for y in one of the equations and substitute that value into the other equation to solve for x.

Starting with 4x - y = 3, we can add y to both sides to isolate x:

4x = 3 + y

Then, we can substitute this expression for y into the second equation:

3x + (3 + y) = 4

Expanding the right side, we get:

3x + 3 + y = 4

3x + 3 = 4 - y

3x = 1 - y

x = (1 - y)/3

Now, we can substitute the expression for x into the first equation:

4((1 - y)/3) - y = 3

4(1 - y)/3 = 3 + y

4 - 4y/3 = 3 + y

1 - 4y/3 = y + 3

-3y/3 = -2

y = 2

Finally, we can substitute the value of y into one of the original equations to find x:

4x - 2 = 3

4x = 5

x = 5/4

So, the solution to the system of equations is (x, y) = (5/4, 2).

Maryann needs to run 2 more laps to run on Sunday .

Lap can be referred as One complete trip around a race track οr from one end of a swimming pool to the other: Fοr example, Each lap of the track is 400 meters.

Given:

Maryann runs : 3/4-mile track

She runs  on Saturday: 8 1/2 laps = 17/2

Total miles to cover = 10 1/2 = 21/2

more laps does Maryann need to run on Sunday

= Total miles to cover - She runs  on Saturday

= 21/2 - 17/2

= 4/2

= 2

Hence , Maryann needs to run 2 more laps to run on Sunday .

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Number of acres more there at Navajo Monument than at George Washington Carver Monument is 120.

Find the area that its outer surfaces possess. Sum of all those surfaces' area is the surface area of the considered object.

Given;

The area of navajo monument= 360acres

The area of George Washington Carver Monument = 240 acres

Now

More area navajo monument has =area of navajo monument -  area of George Washington Carver Monument

=360-240

=120

Therefore, the extra area navajo monument has is 120 acres.

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Making A the subject of the equation V = APT gives A = V/(PT)

An equation is an expression that contains numbers and variables linked together by mathematical operations of addition, subtraction, multiplication, division and exponents. An equation can either  be linear, quadratic, cubic, depending of the degree of the variable.

Given the equation:

V = APT

We need to make A the subject of the formula.

Firstly, divide both sides of the equation by P:

V/P = APT/P

AT = V/P

Secondly divide both sides of the equation by T:

(AT)/T = (V/P)/T

A = V/(PT)

The value is A = V/(PT)

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The intersection of sets P and Q is given as follows:

P and Q = {2}.

The sets P and Q for this problem are defined as follows:

The intersection between two sets is composed by the elements that belong to both of the sets.

Hence the intersection of sets P and Q is given as follows:

P and Q = {2}.

As the element 2 belongs to both sets P and Q.

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