If three fair, six-sided dice are rolled, and the sum of the numbers rolled is odd, what is the probability that all three numbers rolled were odd?
1/5
1/4
1/2
1/3
1/8

Answers

Answer 1

The probability that all three numbers rolled were odd when the sum of the numbers rolled is odd is 1/8.Answer: 1/8.

Given that three fair, six-sided dice are rolled. To find the probability that all three numbers rolled were odd when the sum of the numbers rolled is odd.We know that there are three ways to get an odd sum when rolling three dice: odd + odd + odd odd + even + even even + odd + evenWe are looking for the probability of the first case, where all three dice are odd. For the sum of three dice to be odd, each of the three dice must be odd because an even number plus an odd number is odd, and three odd numbers added together will be odd.

The probability of rolling an odd number on one die is 1/2 since there are three odd numbers (1, 3, and 5) on each die, the probability of rolling three odd numbers is (1/2) × (1/2) × (1/2) = 1/8.Therefore, the probability that all three numbers rolled were odd when the sum of the numbers rolled is odd is 1/8.Answer: 1/8.

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Related Questions


The volume of a rectangular prism is given by V(x)=x^3+3x^3 -
36x + 32
determine possible measures for w and h in terms of x if the
length, I, is x-4

Answers

The measurements of width w is x + 8 and height h is x - 1 when volume of a rectangular prism is given by V(x) = x³ + 3x² - 36x + 32.

Given that,

The volume of a rectangular prism is given by V(x) = x³ + 3x² - 36x + 32

We have to determine possible measures for w and h in terms of x if the

length I is x-4.

We know that,

The volume of a rectangular prism V = w×h×l

x³ + 3x² - 36x + 32 = w×h×(x-4)

w×h = [tex]\frac{x^3 + 3x^2 - 36x + 32}{x - 4}[/tex]

Now, by using long division of equation

x - 4) x³ + 3x² - 36x + 32 ( x² + 7x - 8

        x³ - 4x²

----------------------------------------(subtraction)

              7x² - 36x + 32

              7x² - 28x

----------------------------------------(subtraction)

                       -8x + 32

                       -8x + 32

----------------------------------------(subtraction)

                              0

So,

w×h = x² + 7x - 8

Now, finding the root of equation

w×h = x² + 8x - x - 8

w×h = (x + 8)(x - 1)

Therefore, The measurements of width w is x + 8 and height h is x - 1.

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You make an investment of $8000. For the first 18 months you earn 5% compounded semi-annually. For the next 5 months you earn 10% compounded monthly. What is the maturity value of the certificate?

Answers

The maturity value of the investment would be $8,858.80.

To calculate the maturity value, we need to calculate the compound interest for each period separately and then add them together.

For the first 18 months, the interest is compounded semi-annually at a rate of 5%. Since there are two compounding periods per year, we divide the annual interest rate by 2 and calculate the interest for each period. The formula for compound interest is A = P(1 + r/n)^(nt), where A is the maturity value, P is the principal amount, r is the annual interest rate, n is the number of compounding periods per year, and t is the number of years. Plugging in the values, we get A = 8000(1 + 0.05/2)^(2*1.5) = $8,660.81.

For the next 5 months, the interest is compounded monthly at a rate of 10%. We use the same formula but adjust the values for the new interest rate and compounding frequency. Plugging in the values, we get A = 8000(1 + 0.10/12)^(12*5/12) = $8,858.80.

Therefore, the maturity value of the certificate after the specified period would be $8,858.80.

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Solve the system of equations by any method.
-x+2y=-1
6x-12y = 7
Enter the exact answer as an ordered pair, (x, y).
If there is no solution, enter NS. If there is an infinite number of solutions, enter the general solution as an ordered pair in terms of x.
Include a multiplication sign between symbols. For example, a *x

Answers

To solve the system of equations:

1) -x + 2y = -1

2) 6x - 12y = 7

We can use the method of substitution or elimination to find the values of x and y that satisfy both equations.

Let's use the method of elimination:

Multiplying equation 1 by 6, we get:

-6x + 12y = -6

Now, we can add Equation 2 and the modified Equation 1:

(6x - 12y) + (-6x + 12y) = 7 + (-6)

Simplifying the equation, we have:

0 = 1

Since 0 does not equal 1, we have an inconsistent equation. This means that the system of equations has no solution.

Therefore, the answer is NS (no solution).

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5b) use your equation in part a to determine the cost for 60 minutes.

Answers

Evaluating the linear function in x = 60, we will see that the cost is 260.

How to determine the cost for 60 minutes?

We can see that the equation in the previous part seems to be:

y = 4x + 20

Where y rpresents the cost and x the number of minutes, then to get the cost for 60 minutes, we just need to evaluate the linear function in x = 60, then we will get:

y = 4*60 + 20

Now we need to simplify that, then we will get:

y = 4*60 + 20

y = 240 + 20

y = 260

That is the cost.

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Let A and B be events with probabilities 3/4 and 1/3, respectively. (a) Show that the probability of A∩B is smaller than or equal to 1/3. Describe the situation in which the probability is equal to 1/3. (b) Show that the probability of A∩B is larger than or equal to 1/12. Describe the situation in which the probability is equal to 1/12.

Answers

The events A and B are not mutually exclusive, so the probability of A∩B cannot be equal to 1/12.

(a) The probability of A∩B is given by the intersection of the probabilities of A and B:

P(A∩B) = P(A) * P(B)

Substituting the given probabilities:

P(A∩B) = (3/4) * (1/3) = 1/4

Since 1/4 is smaller than 1/3, we have shown that the probability of A∩B is smaller than 1/3.

The situation where the probability of A∩B is equal to 1/3 would occur if and only if A and B are independent events, meaning that the occurrence of one event does not affect the probability of the other event. However, in this case, A and B are not independent events, so the probability of A∩B cannot be equal to 1/3.

(b) Similar to part (a), we have:

P(A∩B) = P(A) * P(B) = (3/4) * (1/3) = 1/4

Since 1/4 is larger than 1/12, we have shown that the probability of A∩B is larger than 1/12.

The situation where the probability of A∩B is equal to 1/12 would occur if and only if A and B are mutually exclusive events, meaning that they cannot occur at the same time. In this case, the events A and B are not mutually exclusive, so the probability of A∩B cannot be equal to 1/12.

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At time t =0, a bocterial culture weighs 2 grarns. Three hours later, the culture weighs 5 grams. The maximum welght of the culture is 20 grams. (a) Write a logistic equation that models the weight of the bacterial culture. (Round your coeflicients to four decimal places.) (b) Find the culture's weight after 5 hours. (Round your answer to the nearest whole number.) g (c) When will the culture's weight reach 16 grans? (Round your answer to two decimal ptsces.) answer to the nearest whole number.) dy​/dt= y(5)= Q (e) At ahat time is the cuture's weight increasing most rapidly? (Rould your answer to two dedimal ploces).

Answers

The logistic equation that models the weight of the bacterial culture is dy/dt = ky(20 - y), where k is a constant.

After 5 hours, the culture's weight is approximately 9 grams.

The culture's weight will reach 16 grams after approximately 4.69 hours.

The culture's weight is increasing most rapidly at approximately 2.34 hours.

To model the weight of the bacterial culture using a logistic equation, we can use the formula dy/dt = ky(20 - y), where y represents the weight of the culture at time t and k is a constant that determines the growth rate. The term ky represents the growth rate multiplied by the current weight, and (20 - y) represents the carrying capacity, which is the maximum weight the culture can reach. By substituting the given information, we can determine the value of k. At t = 0, y = 2 grams, and after 3 hours, y = 5 grams. Using these values, we can solve for k and obtain the specific logistic equation.

To find the weight of the culture after 5 hours, we can use the logistic equation. Substitute t = 5 into the equation and solve for y. The resulting value will give us the weight of the culture after 5 hours. Round the answer to the nearest whole number to obtain the final weight.

To determine when the culture's weight reaches 16 grams, we can set y = 16 in the logistic equation and solve for t. This will give us the time it takes for the weight to reach 16 grams. Round the answer to the nearest whole number to obtain the approximate time.

The culture's weight increases most rapidly when the rate of change, dy/dt, is at its maximum. To find this time, we can take the derivative of the logistic equation with respect to t and set it equal to zero. Solve for t to determine the time at which the rate of change is maximized. Round the answer to two decimal places.

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Compute Hometown Property Casualty Insurance Company's combined ratio
after dividends using its data as follows:
Loss Ratio 75%
Expense Ratio,30%
Dividend Ratio 1%
Net Investment income 8%




Answers

Hometown Property Casualty Insurance Company's combined ratio, after dividends, can be calculated as 114%. This means that the company is paying out more in losses, expenses, dividends, and taxes than it is earning in premiums and investment income.

The combined ratio is a key metric used in the insurance industry to assess the overall profitability of an insurance company. It is calculated by adding the loss ratio and the expense ratio. In this case, the loss ratio is 75% and the expense ratio is 30%. Therefore, the combined ratio before dividends would be 75% + 30% = 105%.

To calculate the combined ratio after dividends, we need to consider the dividend ratio and the net investment income. The dividend ratio is 1%, which means that 1% of the company's premium revenue is paid out as dividends to shareholders. The net investment income is 8%, representing the return on the company's investments.

To adjust the combined ratio for dividends, we subtract the dividend ratio (1%) from the combined ratio before dividends (105%). This gives us 105% - 1% = 104%. Then, we add the net investment income (8%) to obtain the final combined ratio.

Therefore, the combined ratio after dividends for Hometown Property Casualty Insurance Company is 104% + 8% = 114%. This indicates that the company's expenses and losses, including dividends and taxes, exceed its premium revenue and investment income by 14%. A combined ratio above 100% suggests that the company is operating at a loss, and in this case, Hometown Property Casualty Insurance Company would need to take measures to improve its profitability.

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Which of the following represents a sample?
Select the correct response:
O The student body at a small college
O A group of 400 doctors sent a questionnaire
O The full rank and file of workers at a factory
O All of the cars of a certain make and model from one year

Answers

The correct answer would be "A group of 400 doctors sent a questionnaire."Option B.

A sample is defined as a subset of a population, so a small group of people that represents the whole is an example of a sample. A population, on the other hand, is a total set of individuals, objects, or observations in a given study. A sample is a subset of a population that is chosen for study.

So, the correct answer would be "A group of 400 doctors sent a questionnaire."

Option B represents a sample because only 400 doctors were surveyed to represent the entire population of doctors. Option A represents a population because all students at a small college represent the entire population of students at the college.

Option C represents a population because all employees in a factory represent the entire population of workers in the factory.

Option D represents a population because all cars of a certain make and model from one year represent the entire population of cars of that make and model from that year.

A group of 400 doctors sent a questionnaire, since it's a smaller group representing the larger population of doctors, it is the only option that represents a sample.

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Linearize this equation
I
0


I
1



=e
Av
−1 They gare us this answer and they wanz us to exapand and show how they have found it lnI=Av+lnI
0

Answers

The equation[tex]I_0/I_1 = e^(Av)^-1[/tex] can be linearized by taking the natural logarithm of both sides. This gives us the equation [tex]ln(I_0/I_1) = Av + ln(I_0)[/tex]. This is a linear equation in the variable v, and it can be solved using standard linear methods.

The natural logarithm is a function that takes a number and returns its logarithm. The logarithm of a number is a measure of how many times the base of the logarithm must be multiplied by itself to equal the number. For example, the logarithm of 100 to the base 10 is 2, because 10 multiplied by itself 2 times (10 x 10 = 100).

Taking the natural logarithm of both sides of the equation I_0/I_1 = e^(Av)^-1 converts the exponential term to a linear term. This is because the natural logarithm of an exponential term is simply the exponent. In other words Av^-1

The resulting equation,ln(I_0/I_1) = Av + ln(I_0), is a linear equation in the variable v. This means that we can solve for v using standard linear methods, such as the substitution method or the elimination method.

Once we have solved for v, we can plug it back into the original equation to find the value of I_1. This value can then be used to calculate other quantities, such as the rate of change of the system. The linearized equation can be used to approximate the value of I_1 for small values of v. This is because the natural logarithm is a relatively slowly-varying function, so the approximation is accurate for small values of v.

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If applied to the function, f, the transformation (x,y)→(x−4,y−6) can also be written as Select one: [. f(x+4)−6 b. f(x−4)−6 c. f(x+4)+6 d. f(x−4)+6 Clear my choice

Answers

The correct answer is b. f(x−4)−6. The other options are not correct because they do not accurately represent the given transformation.

The transformation (x,y)→(x−4,y−6) shifts the original function f by 4 units to the right and 6 units downward. In terms of the function notation, this means that we need to replace the variable x in f with (x−4) to represent the horizontal shift, and then subtract 6 from the result to represent the vertical shift.

By substituting (x−4) into f, we account for the rightward shift. The transformation then becomes f(x−4), indicating that we evaluate the function at x−4. Finally, subtracting 6 from the result represents the downward shift, giving us f(x−4)−6.

Option a, f(x+4)−6, would result in a leftward shift by 4 units instead of the required rightward shift. Option c, f(x+4)+6, represents a rightward shift but in the opposite direction of what is specified. Option d, f(x−4)+6, represents a correct horizontal shift but an upward shift instead of the required downward shift. Therefore, option b is the correct choice.

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Find y as a function of t if y′′+16y′+89y=0,y(0)=9,y′(0)=4 y = ___

Answers

The solution to the given second-order linear homogeneous differential equation y'' + 16y' + 89y = 0, with initial conditions y(0) = 9 and y'(0) = 4, can be expressed as y(t) = e^(-8t) * (A * cos(3t) + B * sin(3t)).

To solve the given second-order linear homogeneous differential equation, we assume a solution of the form y(t) = e^(mt). Substituting this into the differential equation, we obtain the characteristic equation:

m^2 + 16m + 89 = 0

Solving this quadratic equation, we find two complex roots: m = -8 ± 3i. The general solution is then given by y(t) = e^(-8t) * (A * cos(3t) + B * sin(3t)), where A and B are arbitrary constants.

To determine the values of A and B, we use the initial conditions y(0) = 9 and y'(0) = 4. Plugging these values into the general solution, we get:

y(0) = A * cos(0) + B * sin(0) = A = 9

Differentiating the general solution with respect to t, we have:

y'(t) = -8e^(-8t) * (A * cos(3t) + B * sin(3t)) + 3e^(-8t) * (-A * sin(3t) + B * cos(3t))

Evaluating y'(0) = 4, we get:

-8 * (9 * cos(0) + B * sin(0)) + 3 * (-9 * sin(0) + B * cos(0)) = -72 + 3B = 4

Solving this equation for B, we find B = 26. Therefore, the specific solution to the given differential equation with the given initial conditions is:

y(t) = e^(-8t) * (9 * cos(3t) + 26 * sin(3t))

In summary, the solution to the given differential equation y'' + 16y' + 89y = 0, with initial conditions y(0) = 9 and y'(0) = 4, is y(t) = e^(-8t) * (9 * cos(3t) + 26 * sin(3t)). This represents the function y as a function of t that satisfies the given conditions.

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Find all constants b (if any) that make the vectors ⟨b+3,−1⟩ and ⟨b,10⟩ orthogonal.

Answers

The constants that make the vectors ⟨b+3,−1⟩ and ⟨b,10⟩ orthogonal are b = -5 and b = 2.

To find the constant b that makes the vectors ⟨b+3,−1⟩ and ⟨b,10⟩ orthogonal, we need to check if their dot product is zero.

The dot product of two vectors is calculated by multiplying their corresponding components and summing the results.

So, we have:

⟨b+3,−1⟩ · ⟨b,10⟩ = (b+3)(b) + (-1)(10) = [tex]b^2[/tex] + 3b - 10

For the vectors to be orthogonal, their dot product should be zero.

Therefore, we set the dot product equal to zero and solve for b:

[tex]b^2[/tex]+ 3b - 10 = 0

This equation can be factored as:

(b + 5)(b - 2) = 0

Setting each factor equal to zero gives us two possible values for b:

b + 5 = 0  -->  b = -5

b - 2 = 0  -->  b = 2

So, the constants that make the vectors orthogonal are b = -5 and b = 2.

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1.Find all solution(s) to the system of equations shown below.
x+y=0
x^3−5x−y=0
(−2,2),(0,0),(2,−2)
(2,−2),(0,0)
(0,0),(4,−4)
(−6,6),(0,0),(6,−6)

2.Solve the system of equations shown below.
(3/4)x− (5/2)y=−9
−x+6y=28
x=21.5,y=8.25
x=−8,y=6
x=8,y=6
x=−21.5,y=8.25

3.Find all solutions(s) to the system of equations shown below.
2x^2−2x−y=14
2x−y=−2
(−3,−2),(5,6)
(−2,0),(3,0)
(−1,0),(0,2)
(−2,−2),(4,10)


.

Answers

The solutions of the given system of equations are(−2,−2),(4,10).Conclusion:The solutions of the given system of equations are(−2,−2),(4,10).

1. Explanation:
The given system of equations isx+y=0x³-5x-y=0

On solving the first equation for y, we gety = - x

Putting the value of y in the second equation, we getx³ - 5x - (-x) = 0x³ + 4x = 0

On factorising the above equation, we getx(x² + 4) = 0

Therefore,x = 0 or x² = - 4

Now, x cannot be negative because the square of a real number cannot be negative

Hence, there is only one solution, x = 0 When x = 0, we get y = 0

Therefore, the only solution of the given system of equations is (0,0).Conclusion:The given system of equations isx+y=0x³-5x-y=0The only solution of the given system of equations is (0,0).

2. Explanation:We are given the system of equations as follows:(3/4)x- (5/2)y=-9-x+6y=28

On solving the second equation for x, we getx = 28 - 6y

Putting the value of x in the first equation, we get(3/4)(28 - 6y) - (5/2)y = - 9

Simplifying the above equation, we get- 9/4 + (9/2)y - (5/2)y = - 9(4/2)y = - 9 + 9/4(4/2)y = - 27/4y = - 27/16

Putting the value of y in x = 28 - 6y, we getx = 21.5

Hence, the solution of the given system of equations isx = 21.5 and y = - 27/16.Therefore,x=21.5,y=8.25.

Conclusion:The solution of the given system of equations is x = 21.5 and y = - 27/16.

3. Explanation:The given system of equations is 2x² - 2x - y = 142x - y = - 2O

n solving the second equation for y, we get y = 2x + 2

Putting the value of y in the first equation, we get 2x² - 2x - (2x + 2) = 142x² - 4x - 16 = 0x² - 2x - 8 = 0

On solving the above equation, we getx = - (b/2a) ± √(b² - 4ac)/2a

Plugging in the values of a, b and c, we getx = 1 ± √3

The solutions for x are, x = 1 + √3 and x = 1 - √3

When x = 1 + √3, we get y = 2(1 + √3) + 2 = 4 + 2√3

When x = 1 - √3, we get y = 2(1 - √3) + 2 = 4 - 2√3

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Find the indicated derivative. In this case, the independent variable is a (unspecified) differentiable function of t. y=x⁰.³ (1+x).
Find dy/dt

Answers

The derivative dy/dt can be found using the chain rule and the product rule.

dy/dt = (d/dt) [x^0.3 (1 + x)] = 0.3x^(-0.7) (1 + x) dx/dt.

To find the derivative dy/dt, we need to differentiate the function y = x^0.3 (1 + x) with respect to t.

First, we apply the product rule, which states that the derivative of the product of two functions is equal to the derivative of the first function times the second function, plus the first function times the derivative of the second function.

Let's denote the derivative of x with respect to t as dx/dt. Applying the product rule, we have:

dy/dt = (d/dt) [x^0.3] (1 + x) + x^0.3 (d/dt) [1 + x].

The derivative of x^0.3 with respect to t is found by multiplying it by the derivative of x with respect to t, which is dx/dt.

Therefore, we have:

(dy/dt) = 0.3x^(-0.7) dx/dt (1 + x) + x^0.3 (d/dt) [1 + x].

To find the derivative of (1 + x) with respect to t, we differentiate it with respect to x and multiply it by the derivative of x with respect to t:

(d/dt) [1 + x] = (d/dx) [1 + x] * (dx/dt) = 1 * dx/dt = dx/dt.

Substituting this back into the equation, we have:

(dy/dt) = 0.3x^(-0.7) (1 + x) dx/dt + x^0.3 dx/dt.

Finally, factoring out dx/dt, we get:

(dy/dt) = (0.3x^(-0.7) (1 + x) + x^0.3) dx/dt.

Therefore, the derivative dy/dt is given by (0.3x^(-0.7) (1 + x) + x^0.3) dx/dt.

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[ 3] [ 0] [ 5 ]
Are the vectors [-2], [ 0], and [ 3 ] linearly independent?
[ -5] [-5] [ -3]
If they are linearly dependent, find scalars that are not all zero such that the equation below is true. If they are linearly independent, find the only scalars that will make the equation below true
[ 3] [ 0] [ 5 ] [0]
___________ [-2], + __ [ 0], + __ [ 3 ] = [0]
[ -5] [-5] [ -3] [0]

Answers

The vectors [-2], [0], and [3] are linearly independent.

To determine if the vectors are linearly independent, we can set up an equation of linear dependence and check if the only solution is the trivial solution (where all scalars are zero).

Let's assume that there exist scalars a, b, and c (not all zero) such that the equation below is true:

a[-2] + b[0] + c[3] = [0].

Simplifying this equation, we get:

[-2a + 3c] = [0].

For this equation to hold true, we must have -2a + 3c = 0.

Since the equation -2a + 3c = 0 has infinitely many solutions (infinite pairs of (a, c)), we can conclude that the vectors [-2], [0], and [3] are linearly independent.

In summary, the vectors [-2], [0], and [3] are linearly independent because there is no non-trivial solution to the equation -2a + 3c = 0.

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Suppose the annual salaries for sales associates from a particular store have a mean of $31,344 and a standard deviation of $2,241. If we don' know anything about the distribution of annual salaries, what is the maximum percentage of salaries above $41.641? Round your answer to two decimal places and report your response as a percentage (eg: 95.25).

Answers

The maximum percentage of salaries above $41,641 is approximately 0%.

To find the maximum percentage of salaries above $41,641, we need to calculate the z-score for that value and then determine the percentage of data that falls above it.

The z-score formula is given by:

z = (x - μ) / σ

where x is the value, μ is the mean, and σ is the standard deviation.

In this case, x = $41,641, μ = $31,344, and σ = $2,241.

Calculating the z-score:

z = ($41,641 - $31,344) / $2,241

= $10,297 / $2,241

≈ 4.59

To find the percentage of salaries above $41,641, we can refer to the standard normal distribution table or use a calculator.

Using a standard normal distribution table, we find that the percentage of data above a z-score of 4.59 is very close to 0%. Therefore, the maximum percentage of salaries above $41,641 is approximately 0%.

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Anita wants to withdraw $1,000 per month for the next 10 years. She will withdraw the first amount in one month. The bank pays interest at 6% compounded monthly. How much does she need to deposit today to do this?
Some other number
$90,073.45
$120,000.00
$92,421.48
$94,281.35

Answers

She needs to deposit of amount  $92,421.48 today to do this.

We need to find out the present value of $1,000 per month for the next 10 years by considering the interest rate and compounding period given. We are given,Anita wants to withdraw $1,000 per month for the next 10 years.The bank pays interest at 6% compounded monthly.We can calculate the present value of $1,000 per month for the next 10 years by using the formula for Present Value of Annuity. The formula for Present Value of Annuity is given by:PVA= A((1- (1+r)^-n)/r), wherePVA = Present Value of AnnuityA = Amountn = Number of Periodsr = Interest Rate per PeriodFirst, we calculate the interest rate per period as follows:r = 6% per annum/ 12 monthsr = 0.5% per monthNumber of periods (n) = 10 years x 12 months per year = 120 months Amount of Annuity (A) = $1,000Using the above values, we can calculate the present value of the annuity as follows:PVA = 1000 * ((1- (1+0.5%)^-120)/(0.5%))PVA = $92,421.48Therefore, she needs to deposit $92,421.48 today to do this. Therefore, the correct option is $92,421.48.

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explain the difference between a parameter and a statistic.

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Both a parameter and a statistic are significant ideas in statistics, yet they serve distinct functions.

The Different between Parameter and Statistic

A parameter is a population's numerical characteristic. It stands for a constant value that characterizes the entire population under investigation. It is frequently necessary to estimate unknown parameters using sample data. The population parameter would be the real average height, for instance, if you wanted to know what the average height of all adults in a nation was.

A statistic, on the other hand, is a numerical feature of a sample. A sample is a selection of people or facts drawn from a broader population. By examining the data from the sample, statistics are utilized to determine population parameters. In keeping with the preceding illustration, the sample statistic would be the estimated average height of the individuals in the sample if you measured the heights of a sample of adults from the country.

To sum it up:

A population's numerical trait that indicates a fixed value is referred to as a parameter. It must frequently be guessed because it is unknown.

A statistic is a numerical feature of a sample that is used to infer population-level characteristics.

The objective of statistical inference is frequently to draw conclusions about population parameters from sample statistics. This involves analyzing the sample data with statistical methods in order to make generalizations about the population.

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Find a formula for the nth derivative of f(x)=1/7x−6​ evaluated at x=1. That is, find f(n)(1).

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The nth derivative of f(x) = (1/7x - 6) evaluated at x = 1 can be found using the power rule for derivatives. The power rule states that if f(x) = ax^n, where a and n are constants, then the nth derivative of f(x) is given by f^(n)(x) = a * n! / (n - k)!, where k is the number of derivatives taken.

In this case, f(x) = (1/7x - 6), and we want to find f^(n)(1). Since the function involves a linear term, the power rule simplifies the calculation. The first derivative of f(x) is f'(x) = -1/7x^(-2), the second derivative is f''(x) = 2/49x^(-3), the third derivative is f'''(x) = -6/343x^(-4), and so on.

To evaluate the nth derivative at x = 1, we substitute x = 1 into the derivative expression. However, since each derivative involves x raised to a negative power, we encounter a problem at x = 0. Hence, the domain of the function needs to be taken into account when evaluating the derivatives.

In conclusion, the nth derivative of f(x) = (1/7x - 6) evaluated at x = 1 can be found using the power rule for derivatives. However, considering the

domain limitations, further clarification, or restrictions on the value of n or the interval of interest are needed to provide a more precise answer.

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Unsystematic risk is defined as the risk that affects a small number of securities. (c). Unsystematic risk, also known as specific risk or diversifiable risk, is specific to individual assets or companies rather than the entire market.

It is the portion of risk that can be eliminated through diversification. Unsystematic risk arises from factors that are unique to a particular investment, such as company-specific events, management decisions, industry trends, or competitive pressures. This type of risk can be mitigated by building a well-diversified portfolio that includes a variety of assets across different industries and sectors.

By spreading investments across multiple securities or asset classes, unsystematic risk can be reduced or eliminated. This is because the specific risks associated with individual assets tend to cancel each other out when combined in a portfolio. However, it's important to note that unsystematic risk cannot be eliminated entirely through diversification since it is inherent to individual investments. Unsystematic risk is often contrasted with systematic risk, which refers to the overall risk that is inherent in the entire market or a particular asset class.

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[3 marks ]∗∗ For the domain X={x,y,z} and co-domain Y={a,b} : i. How many functions f:X→Y are possible? Provide an example of a function, using formal notation or a diagram. ii. How many of the functions in i) are surjective? Provide an example that is surjective and an example that is not. iii. How many of the functions in i) are bijective? Provide an example if one exists, if not explain why not.

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There are 2^3 = 8 functions f:X→Y possible. There are 2 surjective functions, one of which is f(x) = a if x = x or y, and f(x) = b if x = z. There are no bijective functions.

A function f:X→Y is a set of ordered pairs (x,y) where x is in X and y is in Y. Each x in X must be paired with exactly one y in Y.

In this case, X = {x, y, z} and Y = {a, b}. There are 2^3 = 8 possible functions f:X→Y because there are 2 choices for each of the 3 elements in X. For example, one possible function is f(x) = a if x = x or y, and f(x) = b if x = z.

A surjective function is a function where every element in the codomain is the image of some element in the domain. In this case, there are 2 surjective functions. One of them is the function f(x) = a if x = x or y, and f(x) = b if x = z. The other surjective function is f(x) = b for all x in X.

A bijective function is a function that is both injective and surjective. In this case, there are no bijective functions. This is because if there were a bijective function, then the domain and codomain would have the same number of elements.

However, the domain X has 3 elements and the codomain Y has 2 elements, so there cannot be a bijective function.

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You suspect that a 6-sided die is not fair. Which statement would provide the best evidence that the die is unfair? A. You roll the die 1200 times and observe 4006 's B. You roll the die 12 times and observe 56 's C. You roll the die 120 times and observe 22.6 's D. You roll the die and observe 3 consecutive 6 's

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Option A: "You roll the die 1200 times and observe 400 6s" would be the best proof that the die is unjust.

In comparison to the other options, Option A offers a significantly bigger sample size, which improves the accuracy and dependability of the findings.

There is a sizable quantity of data to be analyzed from the 1200 rolls, and the observation of 400 instances of the number 6 shows that the probability of rolling the number may be substantially higher than the anticipated probability of 1/6 for a fair 6-sided die.

Due to the significantly smaller sample sizes for Options B, C, and D, the results are less conclusive and more subject to chance changes.

Option B's 5 6s out of 12 rolls would fall within the realm of what a fair die might produce.

It is challenging to make firm conclusions from Option C's 22.6's (perhaps 22 or 23 occurrences of 6 out of 120 rolls), as it is still a small sample size.

Only the observation of three consecutive 6s is mentioned in Option D, and even with a fair die, this could infrequently occur by coincidence.

For a more reliable assessment of fairness, it's essential to have a larger sample size, as provided in option A.

This larger data set allows for better statistical analysis and a more accurate determination of whether the die is fair or not.

Hence the correct option is A.

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Sylvia and Patrick plotted the information they gathered on the weight of cars and the mileage they get. Then they each drew a line on the graph that they felt best fit the data.

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Sylvia and Patrick gathered information on the weight of cars and the mileage they get, and then proceeded to plot the data on a graph.

After plotting the data points, each of them independently drew a line on the graph that they believed best represented the relationship between car weight and mileage. Drawing a line on the graph is a way to visually approximate a trend or pattern in the data. Each line likely represents their interpretation of the general trend or correlation between car weight and mileage. It's important to note that the lines drawn by Sylvia and Patrick are subjective and based on their own perception or understanding of the data. The accuracy of their lines as a representation of the actual relationship between weight and mileage would depend on the quality and quantity of the data gathered and the methodology used to analyze it.

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Find the coordinate of a point that partitions the segment AB, where A (0, 0) & B(6, 9) into a ratio of 2:1

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let's call that point C, thus we get the splits of AC and CB

[tex]\textit{internal division of a line segment using ratios} \\\\\\ A(0,0)\qquad B(6,9)\qquad \qquad \stackrel{\textit{ratio from A to B}}{2:1} \\\\\\ \cfrac{A\underline{C}}{\underline{C} B} = \cfrac{2}{1}\implies \cfrac{A}{B} = \cfrac{2}{1}\implies 1A=2B\implies 1(0,0)=2(6,9)[/tex]

[tex](\stackrel{x}{0}~~,~~ \stackrel{y}{0})=(\stackrel{x}{12}~~,~~ \stackrel{y}{18}) \implies C=\underset{\textit{sum of the ratios}}{\left( \cfrac{\stackrel{\textit{sum of x's}}{0 +12}}{2+1}~~,~~\cfrac{\stackrel{\textit{sum of y's}}{0 +18}}{2+1} \right)} \\\\\\ C=\left( \cfrac{ 12 }{ 3 }~~,~~\cfrac{ 18}{ 3 } \right)\implies C=(4~~,~~6)[/tex]

Consider the function r:R→R2, defined by r(t)=⟨t2,ln(t)⟩. (a) Is r(t) continuous at t=0 ? Is r(t) continuous at t=1 ? (b) Compute the principal unit tangent vector at t=1. (c) Find the arc-length function for t≥1. (Don't compute the integral)

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(a) The function r(t) is not continuous at t=0 because the natural logarithm ln(t) is undefined for t=0. However, r(t) is continuous at t=1 since both t^2 and ln(t) are defined and continuous for t=1.

(b) The principal unit tangent vector at t=1 can be computed by taking the derivative of the function r(t) and normalizing it to have unit length.

(c) The arc-length function for t≥1 can be found by integrating the magnitude of the derivative of r(t) with respect to t.

(a) The function r(t) is not continuous at t=0 because ln(t) is undefined for t=0. The natural logarithm function is only defined for positive values of t, and when t approaches 0 from the positive side, ln(t) tends to negative infinity. Therefore, r(t) is discontinuous at t=0. However, r(t) is continuous at t=1 since both t^2 and ln(t) are defined and continuous for t=1.

(b) To compute the principal unit tangent vector at t=1, we need to find the derivative of r(t). Taking the derivative of each component, we have:

r'(t) = ⟨2t, 1/t⟩.

At t=1, the derivative is r'(1) = ⟨2, 1⟩. To obtain the principal unit tangent vector, we normalize this vector by dividing it by its magnitude:

T(1) = r'(1)/‖r'(1)‖ = ⟨2, 1⟩/‖⟨2, 1⟩‖.

(c) The arc-length function for t≥1 can be found by integrating the magnitude of the derivative of r(t) with respect to t. The magnitude of r'(t) is given by:

‖r'(t)‖ = √((2t)^2 + (1/t)^2) = √(4t^2 + 1/t^2).

To find the arc-length function, we integrate this expression with respect to t:

s(t) = ∫[1 to t] √(4u^2 + 1/u^2) du,

where u is the integration variable. However, since the question explicitly asks not to compute the integral, we can stop here and state that the arc-length function for t≥1 can be obtained by integrating the expression √(4t^2 + 1/t^2) with respect to t.

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(3) Make a truth table for the propositional statement P := (q ∧
r → ¬p) ∧ (¬(p → q))

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The truth table for the propositional statement P := (q ∧ r → ¬p) ∧ (¬(p → q)) is as follows:

| p | q | r | P |

|---|---|---|---|

| T | T | T | F |

| T | T | F | F |

| T | F | T | F |

| T | F | F | F |

| F | T | T | F |

| F | T | F | F |

| F | F | T | F |

| F | F | F | F |

1. p, q, and r represent three propositional variables.

2. The first part of the statement, (q ∧ r → ¬p), is an implication. It states that if q and r are both true, then p must be false. Otherwise, the statement evaluates to true. The resulting truth values are shown in the third column of the truth table.

3. The second part of the statement, ¬(p → q), is a negation of another implication. It states that the implication p → q must be false. In other words, if p is true, then q must be false for this part to evaluate to true. The resulting truth values are shown in the fourth column of the truth table.

4. The final result, P, is obtained by evaluating the conjunction (logical AND) of the two parts. P will be true only when both parts are true simultaneously. As seen in the truth table, there are no combinations of p, q, and r that satisfy this condition, resulting in a false value for all rows.

the truth table demonstrates that the propositional statement P := (q ∧ r → ¬p) ∧ (¬(p → q)) is always false, regardless of the truth values of the variables p, q, and r.

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A consumer's utility function is U = In(xy²) (a) Find the values of x and y which maximise utility subject to the budgetary constraint 6x + 3y = 36. Use the method of substitution to solve this problem. (b) Show that the ratio of marginal utility to price is the same for x and y.

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The values of x and y that maximize utility 2 and 8 respectively. To show that the ratio of marginal utility to price is the same for x and y, we need to compare the expressions (dU/dx) / (Px) and (dU/dy) / (Py).

To maximize utility subject to the budgetary constraint, we can use the method of substitution. Let's solve the problem step by step:

(a) Maximizing Utility:

Given the utility function U = ln(x[tex]y^2[/tex]) and the budgetary constraint 6x + 3y = 36, we can begin by solving the budget constraint for one variable and substituting it into the utility function.

From the budget constraint:

6x + 3y = 36

Rearranging the equation:

y = (36 - 6x)/3

y = 12 - 2x

Now, substitute the value of y into the utility function:

U = ln(x[tex](12 - 2x)^2[/tex])

U = ln(x(144 - 48x + 4[tex]x^2[/tex]))

U = ln(144x - 48[tex]x^2[/tex] + 4[tex]x^3[/tex])

To find the maximum utility, we differentiate U with respect to x and set it equal to zero:

dU/dx = 144 - 96x + 12[tex]x^2[/tex]

Setting dU/dx = 0:

144 - 96x + 12[tex]x^2[/tex] = 0

Simplifying the quadratic equation:

12[tex]x^2[/tex] - 96x + 144 = 0

[tex]x^2[/tex] - 8x + 12 = 0

(x - 2)(x - 6) = 0

From this, we find two possible values for x: x = 2 and x = 6.

To find the corresponding values of y, substitute these x-values back into the budget constraint equation:

For x = 2:

y = 12 - 2(2) = 12 - 4 = 8

For x = 6:

y = 12 - 2(6) = 12 - 12 = 0

So, the values of x and y that maximize utility subject to the budgetary constraint are x = 2, y = 8.

(b) Ratio of Marginal Utility to Price:

To show that the ratio of marginal utility to price is the same for x and y, we need to compare the expressions (dU/dx) / (Px) and (dU/dy) / (Py), where Px and Py are the prices of x and y, respectively.

Taking the derivative of U with respect to x:

dU/dx = 144 - 96x + 12[tex]x^2[/tex]

Taking the derivative of U with respect to y:

dU/dy = 0 (since y does not appear in the utility function)

Now, let's calculate the ratio (dU/dx) / (Px) and (dU/dy) / (Py):

(dU/dx) / (Px) = (144 - 96x + 12[tex]x^2[/tex]) / Px

(dU/dy) / (Py) = 0 / Py = 0

As Px and Py are constants, the ratio (dU/dx) / (Px) is independent of x. Thus, the ratio of marginal utility to price is the same for x and y.

This result indicates that the consumer is optimizing their utility by allocating their budget in such a way that the additional utility derived from each unit of expenditure is proportional to the price of the goods.

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Using four input multiplexer, implement the following function \[ F(a, b, c)=\sum m(0,2,3,5,7) \]

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The function \( F(a, b, c) \) can be implemented using a four-input multiplexer by connecting the inputs and select lines appropriately.

The function \( F(a, b, c) = \sum m(0, 2, 3, 5, 7) \) using a four-input multiplexer,

Step 1: Connect the function inputs \( a \), \( b \), and \( c \) to the multiplexer inputs A, B, and C, respectively.

Step 2: Connect the select lines of the multiplexer (S0, S1) to the complemented form of the function inputs. In this case, connect \( \overline{a} \) to S0 and \( \overline{b} \) to S1.

Step 3: Connect the function outputs corresponding to the minterms (0, 2, 3, 5, 7) to the multiplexer data inputs (D0, D2, D3, D5, D7), respectively.

Step 4: Connect the multiplexer output (Y) to the desired output pin of the circuit.

By following these steps, the four-input multiplexer can be configured to implement the given function \( F(a, b, c) = \sum m(0, 2, 3, 5, 7) \), effectively performing the logical operations specified by the minterms and producing the desired output.

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Find the area of the region bounded by y=x−72 and x=y2. Note: Keep your answer in fraction form. For example write 1/2 instead of 0.5 The area is A = _____

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The area in the fractional form is 1935/3.

The area of the region bounded by the curves y = x - 72 and x = y^2 can be found by calculating the definite integral of the difference between the two functions over the interval where they intersect.

To find the intersection points, we set the equations equal to each other: x - 72 = y^2. Rearranging the equation gives us y^2 - x + 72 = 0. We can solve this quadratic equation to find the y-values. Using the quadratic formula, y = (-(-1) ± √((-1)^2 - 4(1)(72))) / (2(1)). Simplifying further, we obtain y = (1 ± √(1 + 288)) / 2, which can be simplified to y = (1 ± √289) / 2.

The two y-values we get are y = (1 + √289) / 2 and y = (1 - √289) / 2. Simplifying these expressions, we have y = (1 + 17) / 2 and y = (1 - 17) / 2, which give us y = 9 and y = -8, respectively.

To calculate the area, we integrate the difference between the two functions over the interval [y = -8, y = 9]. The integral is given by A = ∫(x - y^2) dy. Integrating x with respect to y gives us xy, and integrating y^2 with respect to y gives us y^3/3. Evaluating the integral from y = -8 to y = 9, we find that the enclosed area is (9^2 * 9/3 - 9 * 9) - ((-8)^2 * (-8)/3 - (-8) * (-8)) = 1935/3. Hence, the area is 1935/3.

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It's true sand dunes in Colorado rival sand dunes of the Great Sahara Desert! The highest dunes at Great Sand Dunes National Monument can exceed the highest dunes in the Great Sahara, extending over 700 feet in height. However, like all sand dunes, they tend to move around in the wind. This can cause a bit of trouble for temporary structures located near the "escaping" dunes, Roads, parking lots, campgrounds, small buildings, trees, and other vegetation are destroyed when a sand dune moves in and takes over. Such dunes are called "escape dunes" in the sense that they move out of the main body of sand dunes and, by the force of nature (prevailing winds), take over whatever space they choose to occupy. In most cases, dune movement does not occur quickly. An escape dune can take years to relocate itself. Just how fast does an escape dune move? Let x be a random variable representing movement (in feet per year) of such sand dunes (measured from the crest of the dune). Let us assume that x has a normal distribution with 16 feet per year and 3.5 feet per year.
Under the influence of prevailing wind patterns, what is the probability of each of the following? (Round your answers to four decimal places.)

(a) an escape dune will move a total distance of more than 90 feet in 6 years
(b) an escape dune will move a total distance of less than 80 feet in 6 years
(c) an escape dune will move a total distance of between 80 and 90 feet in 6 years

Answers

By performing these calculations using the provided mean and standard deviation, you can find the probabilities for each scenario (a), (b), and (c) regarding the movement of an escape dune.

We will make use of the normal distribution's properties as well as the provided mean and standard deviation to solve these probability questions.

Given:

The probability of an escape dune moving a total distance of more than 90 feet in six years is as follows:

(a) Mean () = 16 feet per year; Standard Deviation () = 3.5 feet per year

We must determine the probability that the random variable (x) will rise above 90 feet in six years in order to calculate this probability. Using the following formula, we can turn this into a standard z-score:

For x = 90 feet in six years, z = (x -)/

z = (90 - 16) / 3.5 Now, we can use a calculator or a standard normal distribution table to determine the probability. The cumulative probability can be subtracted from 1 to determine the likelihood that a z-score will be higher than a predetermined value.

P(x > 90) = 1 - P(z  z-score) Use the table or calculator to determine the probability and the z-score.

(b) The likelihood of an escape dune traveling less than 80 feet in six years:

The probability that the random variable (x) will be less than 80 feet in six years must also be determined.

Calculate the z-score and the probability using the table or calculator. P(x  80) = P(z  z-score).

(c) The likelihood that an escape dune will move a total distance of 80 to 90 feet in six years:

We subtract the probability from part (b) from the probability from part (a) to obtain this probability.

P(80  x  90) = P(x  90) - P(x  80) Subtract one of the probabilities from the other in parts (a) and (b).

You can determine the probabilities for each scenario (a), (b), and (c) regarding the movement of an escape dune by carrying out these calculations with the mean and standard deviation that are provided.

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X has a Negative Binomial distribution with r=5 and p=0.7. Compute P(X=6)

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The probability of observing X=6 in a Negative Binomial distribution with r=5 and p=0.7 is approximately 0.0259.

To compute P(X=6), where X follows a Negative Binomial distribution with parameters r=5 and p=0.7, we can use the probability mass function (PMF) of the Negative Binomial distribution.

The PMF of the Negative Binomial distribution is given by the formula:

P(X=k) = (k+r-1)C(k) * p^r * (1-p)^k

where k is the number of failures (successes until the rth success), r is the number of successes desired, p is the probability of success on each trial, and (nCk) represents the combination of n objects taken k at a time.

In this case, we want to compute P(X=6) for a Negative Binomial distribution with r=5 and p=0.7.

P(X=6) = (6+5-1)C(6) * (0.7)^5 * (1-0.7)^6

Calculating the combination term:

(6+5-1)C(6) = 10C6 = 10! / (6!(10-6)!) = 210

Substituting the values into the formula:

P(X=6) = 210 * (0.7)^5 * (1-0.7)^6

Simplifying:

P(X=6) = 210 * 0.16807 * 0.000729

P(X=6) ≈ 0.02592423

Note that the final result is rounded to the required number of decimal places.

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I would really appreciate your helpCollaborative Article about The assault weapon ban in Washington StateThe Assault Weapons ban itself is simpleWhat is happening? and What the public is having to deal with? any and all poetic patterns that create musical unity. Sports World purchased equipment costing $10,000. The equipment has a residual value of $1,000, and an estimated useful life of 5 years or 36,000 shoes. Actual units produced during the year were 7,000 units. Calculate annual depreciation using the Units of Production method. The most accurate Greek attempt to explain planetary motion was the model of:a. Aristotle b. Pythagoras. c. Hipparchus. d. Ptolemy.e. Erastothenes. What were the political and military roles played by the USgovernment in Central America during the 1970s and 80s? I refer to our telephone conversation earlier today. As I explained, I am the book-keeper for Katy; Fox Accountants also carries out the audit for Katys company (KK Limited) and prepares the companys corporation tax computation. I understand that you provide all Katys personal tax advice including preparing her SA100 tax return.During our conversation you asked if I had a copy of Katys P60, Im afraid I do not have a copy as it was given to Katy. However I can tell you that in the tax year 2021/22 Katys net salary was 22,925 after deduction of 15,175 PAYE (11,570 tax and 3,605 NIC).You also asked if I could supply you with a copy of Katys P11D. Again, I do not have a copy of this, but I do know that the benefits Katy received from KK Limited in 2021/22 were:Car: a petrol Land Rover Discovery 4 which cost KK Ltd 42,800 (after discounts) in May 2020. The car has a list price of 43,200 and CO2 emissions of 164g/km. Only 4,000 miles (10% of the mileage) was for business purposes in 2021/22. Katy paid for all petrol but reclaimed 50p a business mile from KK Limited.Unlimited use of two iPhone 11 mobile phones which cost 450 each when KK Ltd purchased them in October 2020. KK Ltd pays total monthly contract fees of 60. (Katy uses one phone exclusively for work purposes and one for private calls).Medical insurance: KK Ltd paid 850 during the tax year to provide Katy with full medical insurance. It would have cost Katy 1,800 to get the same level of insurance directly with the insurer.Calculate employment income for Katty. Make sure you correctly identify and calculate all the BIKS. You are required to use UK tax rules. "A Chief Human Resource (CHRO) at ATK Technologies, recently indicated that employees add value to an organization". a) The Human Capital Management uses a strategy which adds value to the organization by leveraging business growth and ensuring that the organization is profitable" Using practical examples justify this statement? (25)Previous question the ________ covers the outer surface of the heart.