At the conclusion of a soccer game featuring 11 players on each
team, each member of the winning team gave "five" to each member of
the losing team. Each member of the winning team also gave five

Answers

Answer 1

In a soccer game with 11 players on each team, after the game concluded, each member of the winning team gave "five" to each member of the losing team.

Also, each member of the winning team gave five "high-fives" to each member of their own team.

The total number of high-fives exchanged is calculated below;

Each member of the winning team gave 10 high-fives in total (5 to each of their own team, and 5 to each member of the losing team)10 high-fives were exchanged for each of the 11 members on the winning team (11 x 10 = 110 high-fives)10 high-fives were exchanged for each of the 11 members on the losing team (11 x 10 = 110 high-fives)

Therefore, the total number of high-fives exchanged during the game was 110+110 = 220 high-fives.

The winning team exchanged more high-fives with their own team than the losing team since the winning team gave 5 high-fives to each of their own team member.

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Related Questions

Use the extension of the Cauchy Integral Formula to evaluate the contour integral \[ \int_{C} \frac{5 z^{2}+3 \sqrt{2} z+1}{(z-i)^{3}} d z \] where \( C \) is the circle \( |z|=3 \), positively orShow that




C
R


z
4
+5z
2
+4
z
2
−2

dz




(R
2
−1)(R
2
−4)
2πR
3
+4πR

Hint : Use the triangle inequality. [6]

Answers

The contour integral [tex]\(\int_{C} \frac{5z^{2}+3\sqrt{2}z+1}{(z-i)^{3}} dz\)[/tex] along the circle |z|=3 evaluates to [tex]10\pi i\)[/tex], and the inequality [tex]\(\left|\int_{C_R} \frac{z^4+5z^2+4z^2-2}{dz}\right| \leq (R^2-1)(R^2-4) \cdot \frac{2\pi R}{3} + 4\pi R\)[/tex] holds for the given contour [tex]\(C_R\)[/tex].

To evaluate the contour integral [tex]\(\int_{C} \frac{5z^{2}+3\sqrt{2}z+1}{(z-i)^{3}} dz\)[/tex] along the circle |z|=3, we can use the extension of the Cauchy Integral Formula for the derivative of a function. The formula states that if f(z) is analytic inside and on a simple closed contour C, except at a point z=a inside C, then the nth derivative of f(z) at a is given by

[tex]\[f^{(n)}(a) = \frac{n!}{2\pi i}\int_{C} \frac{f(z)}{(z-a)^{n+1}} dz\][/tex]

In our case, we have [tex]\(f(z) = 5z^{2}+3\sqrt{2}z+1\)[/tex] and n = 2 (since we want to evaluate the integral of the third derivative). The point a is i, and the contour C is the circle |z|=3.

Using the formula, we can rewrite the integral as:

[tex]\[\int_{C} \frac{5z^{2}+3\sqrt{2}z+1}{(z-i)^{3}} dz = \frac{2\pi i}{2!}\left(\frac{d^{2}}{dz^{2}}(5z^{2}+3\sqrt{2}z+1)\right)\bigg|_{z=i}\][/tex]

Taking the second derivative of f(z), we have:

[tex]\[\frac{d^{2}}{dz^{2}}(5z^{2}+3\sqrt{2}z+1) = 10\][/tex]

Substituting z=i into the expression, we get:

[tex]\[\int_{C} \frac{5z^{2}+3\sqrt{2}z+1}{(z-i)^{3}} dz = \frac{2\pi i}{2!}\cdot 10 = 10\pi i\][/tex]

Therefore, the value of the contour integral is [tex]\(10\pi i\)[/tex].

Now, let's prove the inequality:

[tex]\[\left|\int_{C_R} \frac{z^4+5z^2+4z^2-2}{dz}\right| \leq (R^2-1)(R^2-4) \cdot \frac{2\pi R}{3} + 4\pi R\][/tex]

We can rewrite the integral as:

[tex]\[\int_{C_R} \frac{z^4+5z^2+4z^2-2}{dz} = \int_{C_R} (z^4+9z^2-2)dz\][/tex]

Using the triangle inequality, we have:

[tex]\[\left|\int_{C_R} (z^4+9z^2-2)dz\right| \leq \int_{C_R} |z^4+9z^2-2||dz|\][/tex]

For any point z on the contour [tex]C_R\)[/tex], we have |z| = R. Using this, we can simplify the expression:

[tex]\[\int_{C_R} |z^4+9z^2-2||dz| = \int_{C_R} |R^4+9R^2-2||dz|\][/tex]

Since [tex]\(|R^4+9R^2-2|\)[/tex] is a constant, we can take it outside the integral:

[tex]\[\int_{C_R} |R^4+9R^2-2||dz| = |R^4+9R^2-2| \int_{C_R} |dz|\][/tex]

The length of the contour [tex]\(C_R\)[/tex] is [tex]\(2\pi R\)[/tex]. Substituting this into the integral, we have:

[tex]\[\int_{C_R} |R^4+9R^2-2||dz| = |R^4+9R^2-2| \cdot 2\pi R\][/tex]

Thus, we obtain:

[tex]\[\left|\int_{C_R} \frac{z^4+5z^2+4z^2-2}{dz}\right| \leq (R^2-1)(R^2-4) \cdot \frac{2\pi R}{3} + 4\pi R\][/tex]

which is the desired inequality.

Note: In the given inequality, there seems to be an error in the expression for the integral. It should be [tex]\(\int_{C_R} \frac{z^4+5z^2+4z^2-2}{dz}\)[/tex] instead of [tex]\(\int_{C_R} \frac{z^4+5z^2+4z^2-2}{dz}\)[/tex].

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An aqueous solution is prepared by pouring 2.0827 g of barium chloride, 0.84945 g of silver nitrate and 4,96845 g of lead nitrate into 200 ml of water. If potassium chromate is added to the previous solution.
Calculate: The order of precipitation (who precipitates first), which will depend on the concentration of the chromate ions of each salt formed.

Answers

Hence, PbCrO4 precipitates.The ion product for BaCrO4 is greater than its solubility product. Hence, BaCrO4 precipitates.

An aqueous solution has been created by mixing 2.0827 g of barium chloride, 0.84945 g of silver nitrate, and 4,96845 g of lead nitrate into 200 ml of water. If potassium chromate is added to the previous solution, calculate the order of precipitation (who precipitates first), which will be influenced by the concentration of the chromate ions of each salt created.

It is possible to determine the order of precipitation by comparing the ion product with the solubility product of the various salts produced. When ion products are equal to or greater than solubility products, precipitation occurs. The order of precipitation is based on the ratio of ion product to solubility product for each salt at equilibrium.

The highest ratio corresponds to the salt with the smallest solubility product, and precipitation begins with this salt. In this scenario, three salts, namely AgCl, PbCrO4, and BaCrO4, may precipitate.

The solubility products are Ksp (AgCl) = 1.77 × 10−10, Ksp (PbCrO4) = 1.72 × 10−14, and Ksp (BaCrO4) = 1.34 × 10−10.The ion product for AgCrO4 is less than its solubility product.

Hence, AgCrO4 does not precipitate.The ion product for PbCrO4 is greater than its solubility product. Hence, PbCrO4 precipitates.The ion product for BaCrO4 is greater than its solubility product. Hence, BaCrO4 precipitates.

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For The Function F(X)={Xx+3x<3x>3, Let E=21 Show That Limx→3f(X)=3. To Prove That A Number L Is Not The Limit Of F(X) As

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The number 3 is not the limit of f(x) as x approaches 3.

To prove that a number L is not the limit of f(x) as x approaches 3, we need to show that there exists an ε > 0 such that for every δ > 0, there exists an x such that |f(x) - L| ≥ ε, where x is within the δ-neighborhood of 3.

In this case, we are given f(x) = {x if x < 3, 3 if x ≥ 3} and we want to show that [tex]lim_{x\rightarrow3}[/tex]f(x) = 3.

To do this, let's consider an ε = 1. For any δ > 0, we can choose x = 3 + δ/2. Now, let's evaluate |f(x) - 3|:

f(x) = {x if x < 3, 3 if x ≥ 3}

f(x) = {3 + δ/2 if x < 3, 3 if x ≥ 3}

|f(x) - 3| = |(3 + δ/2) - 3|

|f(x) - 3| = |δ/2|

|f(x) - 3| = δ/2

Since x = 3 + δ/2, we can see that x approaches 3 as δ approaches 0. However, for any δ > 0, we have δ/2 > 0. Therefore, we have shown that for ε = 1, there exists a δ > 0 such that |f(x) - 3| ≥ ε, indicating that 3 is not the limit of f(x) as x approaches 3.

Hence, we have proven that the number 3 is not the limit of f(x) as x approaches 3.

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The complete question is:

For The Function f(x) = {x if x < 3, 3 if x ≥ 3}, Let E = 21 Show That [tex]lim_{x\rightarrow3}[/tex]f(X) = 3. To Prove That A Number L Is Not The Limit Of F(X) As

help please
Simplify to an expression involving a single trigonometric function with no fractions. \[ \cos (-x)+\tan (-x) \sin (-x) \] Question Help: \( \rightarrow \) Video \( \square \) Message instructor Quest

Answers

The expression cos⁡(−x)+tan⁡(−x)sin⁡(−x) simplifies to cos⁡(x)+tan⁡(x)sin⁡(x).

To simplify the expression cos⁡(−x)+tan⁡(−x)sin⁡(−x)cos(−x)+tan(−x)sin(−x), we can use the trigonometric identities.

First, we know that cos⁡(−x)=cos⁡(x)cos(−x)=cos(x) and sin⁡(−x)=−sin⁡(x)sin(−x)=−sin(x). Substituting these values into the expression, we have cos⁡(x)+tan⁡(−x)(−sin⁡(x))cos(x)+tan(−x)(−sin(x)).

Next, we recall that tan⁡(−x)=−tan⁡(x)tan(−x)=−tan(x). Substituting this into the expression, we get cos⁡(x)+(−tan⁡(x))(−sin⁡(x))cos(x)+(−tan(x))(−sin(x)).

Simplifying further, we have cos⁡(x)+tan⁡(x)sin⁡(x)cos(x)+tan(x)sin(x).

Therefore, the expression cos⁡(−x)+tan⁡(−x)sin⁡(−x)cos(−x)+tan(−x)sin(−x) simplifies to cos⁡(x)+tan⁡(x)sin⁡(x)cos(x)+tan(x)sin(x).

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Solve the following exponential equation. Express your answer as both an exact expression and a decimal approximation rounded to two decimal places. Use e = 2.71828182845905. Answer e³x-2 = 1423x+8 I

Answers

The equation we need to solve is e³x-2 = 1423x+8.

We can see that it's an exponential equation since x appears in the exponent.

It's difficult to solve it algebraically, so we can use a numerical method like Newton's method to approximate the solution.

Step 1:

Rewrite the equation as an equivalent formf(x) = e³x-2 - 1423x-8 = 0

Step 2:

Compute the derivative of f(x)f'(x) = 3e³x-2 - 1423

Step 3:

Choose a starting point x₀.

A good initial guess is x₀ = 1.

Substitute it into f(x) to getf(1) = e³-2 - 1423 = -1420.08092847

Step 4: Apply Newton's method to get the next approximation x₁x₁ = x₀ - f(x₀) / f'(x₀)x₁ = 1 - (-1420.08092847) / (3e³-2 - 1423)x₁ = 1.0000710128

Step 5: Repeat step 4 with x₁ as the new starting point until the desired level of accuracy is achieved.

We will stop after three iterations.x₂ = 1.0000710128 - (-1419.0389263) / (3e³-2 - 1423) = 1.0000708683x₃ = 1.0000708683 - (-1419.0389239) / (3e³-2 - 1423) = 1.0000708683The exact solution is x = 1.0000708683.

We can verify that it's a valid solution by plugging it back into the equation.e³(1.0000708683)-2 ≈ 1423(1.0000708683)+8

So the solution checks out.

We can also convert it to a decimal approximation by substituting e = 2.71828182845905.x ≈ 1.0000708683 is equivalent to x ≈ 1.45.

The final answer is x ≈ 1.45.

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Test the claim that the proportion of men who own cats is smaller than 35% at the .025 significance level. The null and alternative hypothesis would be: H0:p=0.35H1:p<0.35H0:μ=H1:μ=H0:μ=H1:μ

0.35H0:μ=H1:μ> The test is: right-tailed two-tailed left-tailed Based on a sample of 85 men, 177 of the men owned cats The test statistic is: z= (to 2 decimals) The critical value is zC=−1.95996. Thus the test statistic in the critical region. Based on this we: Fail to reject the null hypothesis Reject the null hypothesis

Answers

Based on this, we reject the null hypothesis and conclude that there is evidence to support the claim that the proportion of men who own cats is smaller than 35% at the 0.025 significance level.

How to explain the hypothesis

Null hypothesis (H0): p = 0.35 (proportion of men who own cats is 35%)

Alternative hypothesis (H1): p < 0.35 (proportion of men who own cats is smaller than 35%)

Since we are testing a proportion, we can use a one-sample proportion test. The test statistic for this case is the z-score, which can be calculated using the following formula:

z = (0.207 - 0.35) / √(0.35 * (1 - 0.35) / 85)

z = -2.065

The critical value for a one-tailed test at a significance level of 0.025 is -1.95996. Since the test statistic (-2.065) is less than the critical value (-1.95996), it falls into the critical region.

Based on this, we reject the null hypothesis (H0) and conclude that there is evidence to support the claim that the proportion of men who own cats is smaller than 35% at the 0.025 significance level.

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largemouth bass (Micropterus salmoides) are caught in an electro-fishing study. You measure their overall lengths and weights. This data set produces an rivalue of 0.475. At the alpha=0.05 level, what can you conclude? Select one O There is no way to tell O Their is significant linear correlation between lengths and weights Oc Ther is not significant linear correlation between lengths and weights Od Their is significant non-linear correlation between lengths and weights

Answers

At the alpha = 0.05 level, with a rivalue of 0.475, we can conclude that there is not a significant linear correlation between the lengths and weights of the caught largemouth bass (Micropterus salmoides).

The p-value, is a measure of the strength of evidence against the null hypothesis. In this case, the null hypothesis would be that there is no correlation between the lengths and weights of largemouth bass. The alpha level of 0.05 indicates the threshold for significance. If the p-value is less than 0.05, we reject the null hypothesis and conclude that there is a significant linear correlation. However, since the rivalue is 0.475, which is greater than 0.05, we fail to reject the null hypothesis and conclude that there is not a significant linear correlation between the two variables.

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Show that 3333 4444
+4444 3333
is divisible by 7 .

Answers

The final conclusion is: The given expression 3333 4444+4444 3333 is divisible by 7.

Given the following expression:3333 4444+4444 3333

To show that the above expression is divisible by 7, it has to be converted into a different form.

Let's find out which form.

Notice that:3333 = 3 * 1000 + 3 * 100 + 3 * 10 + 3 * 1 = 3 * (1000 + 100 + 10 + 1) = 3 * 1111 and4444 = 4 * 1000 + 4 * 100 + 4 * 10 + 4 * 1 = 4 * (1000 + 100 + 10 + 1) = 4 * 1111

Therefore,3333 4444+4444 3333can be rewritten as 3 * 1111 * 4 * 1111 + 4 * 1111 * 3 * 1111.

Now, let's simplify:4 * 1111 * 3 * 1111 = 12 * 1111^2Now, let's substitute back to the original expression:3333 4444+4444 3333 = 12 * 1111^2

Thus, the original expression can be written in the form of 7n. So, it is divisible by 7.

The final conclusion is: The given expression 3333 4444+4444 3333 is divisible by 7.

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A price p (in dollars) and demand x∣ for a product are related by 2x 2
+6xp+50p 2
=10600 If the price is increasing at a rate of 2 dollars per month when the price is 10 dollars, find the rate of change of the demand.

Answers

Answer:

its 6 dollars

Step-by-step explanation:

Suppose it is known that the standard deviation of the length of time to complete a particular manufacturing task is 90 seconds. If the manufacturer wants to estimate the total completion time at a confidence level of 99% with a margin of error of 1 second, how many measurements should be included in the sample? Justify your answer with a calculation.?

Answers

With a sample size of roughly 53,688 measurements and a margin of error of 1 second, it is possible to predict the overall completion time with 99% confidence. As a result, the population mean may be estimated with confidence.

To calculate the required sample size, we can use the formula for sample size determination for estimating the population mean:

n = (Z * σ / E)²

Where:

n = required sample size

Z = Z-score corresponding to the desired confidence level (in this case, 99% confidence level)

σ = standard deviation of the population

E = desired margin of error

Given:

Z = Z-score corresponding to a 99% confidence level (approximately 2.576 for a 99% confidence level)

σ = standard deviation of the population (90 seconds)

E = desired margin of error (1 second)

Plugging in the values, we have:

n = (2.576 * 90 / 1)²

Simplifying the expression:

n = (231.84)²

Calculating the value:

n ≈ 53,687.85

Rounding up to the nearest whole number, the required sample size is:

n = 53,688

Therefore, to estimate the total completion time with a confidence level of 99% and a margin of error of 1 second, approximately 53,688 measurements should be included in the sample.

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Given that the function f(x)=3x 4
−16x 3
+7 has critical numbers x=0 and x=4 which of the following statements best describes the local maximum and minimum values of f ? f(x) has a local minimum value at x=0 and a local maximum at x=4. f(x) has a local minimum value at x=4 and a local maximum value at x=0. f(x) has a local maximum value at x=4 and no local minimum value. f(x) has a local maximum value at x=0 and no local minimum value. f(x) has a local minimum value at x=4 and no local maximum value.

Answers

The best statement that describes the local maximum and minimum values of f is: "f(x) has a local minimum value at x=0 and a local maximum at x=4." The correct Option A.

Given that the function

[tex]f(x)=3x^4 −16x^3 +7[/tex]

It has critical numbers x=0 and x=4, the statement that best describes the local maximum and minimum values of f is:

"f(x) has a local minimum value at x=0 and a local maximum at x=4."

Local maximum and minimum values of a function f are found using the first derivative test as follows;

First Derivative Test

Given

[tex]f(x)=3x^4 −16x^3 +7,[/tex]

let's first calculate the first derivative;

[tex]f'(x) = 12x^3 - 48x^2[/tex]

Now let's determine the critical points;x=0 and x=4 are critical points.

f'(0) = 0 and f'(4) = 0

Next, we can find the intervals of increasing and decreasing values for the derivative.

We do this by computing the values of f'(x) for values that lie in between the critical points and constructing a sign table;

x  0  4

f'(x)  0  0

Increasing/decreasing  

interval (−∞, 0)  (0, 4)  (4, ∞)  

f'(x)  −  0  +

Hence, we see that the derivative f'(x) changes sign from negative to positive at x=0, implying that f(x) has a local minimum value at x=0.

Also, we see that the derivative f'(x) changes sign from positive to negative at x=4, implying that f(x) has a local maximum at x=4.

Therefore, the best statement that describes the local maximum and minimum values of f is: "f(x) has a local minimum value at x=0 and a local maximum at x=4." The correct Option A.

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Suppose f(x)= (−3/(2x+5​)) f-¹(x)=

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The inverse function of f(x) = -3/(2x + 5) is f^(-1)(x) = (-3/2x) - (5/2).

Let's find the inverse function of f(x) = -3/(2x + 5).

To find the inverse function, we swap the roles of x and y and solve for y. Let's denote the inverse function as f^(-1)(x).

Start with the equation:

y = -3/(2x + 5).

Swap x and y:

x = -3/(2y + 5).

Now, solve for y:

2y + 5 = -3/x.

2y = (-3/x) - 5.

Divide both sides by 2:

y = (-3/2x) - (5/2).

Therefore, the inverse function of f(x) = -3/(2x + 5) is:

f^(-1)(x) = (-3/2x) - (5/2).

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On a coordinate plane, a curve goes through points (3, 50), (4, 90), and (6, 200). Is the graphed function linear? Yes, because every input has only one output. Yes, because there are no negative values for inputs. No, because the curve indicates that the rate of change is not constant. No, because the outputs are increasing as the inputs increase.

Answers

Yes because every input has only one output

Find the polynomial of minimum degree, with real coefficients, zeros at \( x=2+1 \cdot i \) and \( x=-7 \), and y-intercept at \( -140 \). Write your answer in standard form. \[ P(x)= \]

Answers

Let us consider the given zeros of the polynomial function i.e. `x = 2 + i` and `x = -7` to form linear factors for the polynomial function. We know that if a zero is given in the form `a + bi` then its conjugate is also a zero i.e. `a - bi`.

Hence, the linear factors of the given polynomial function are`(x - 2 - i)` and `(x - 2 + i)` for `x = 2 + i` and `(x + 7)` for `x = -7`Multiplying these linear factors we get, `P(x) = (x - 2 - i)(x - 2 + i)(x + 7)`After multiplying and solving the polynomial function we get.

Therefore, the polynomial function of minimum degree, with real coefficients, zeros at x = 2 + i and x = -7 and y-intercept at -140 is given by \[P(x) = x^3 - 11x^2 + 35x - 57\].

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Calculate the annual economic order quantity from the information provided below. INFORMATION GM Electronics expects to sell 800 alarm systems each month of 2022 at R4 000 each. The cost price of each alarm system is R2 000. The inventory holding cost of an alarm system is 1% of the unit cost price. The cost of placing an order for the alarm systems is estimated at R60. Study the information provided below and calculate the hourly recovery tariff per hour (expressed in rands and cents) of Martha. INFORMATION (4 marks) Use the information provided below to calculate Samantha's remuneration for 17 March 2022. The basic annual salary of Martha is R576 000. She is entitled to an annual bonus of 90% of her basic monthly salary. Her employer contributes 8% of her basic salary to her pension fund. She works for 45 hours per week (from Monday to Friday). She is entitled to 21 days paid vacation leave. There are 12 public holidays in the year (365 days), 8 of which fall on weekdays. INFORMATION (4 marks) (4 marks) 1.3 1.4 Use the information provided below to calculate Samantha's remuneration for 17 March 2022. INFORMATION (4 marks) Samantha's normal wage is R300 per hour and her normal working day is 8 hours. The standard production time for each employee is 4 units for every 30 minutes. On 17 March 2022, Samantha's production was 76 units. Using the Halsey bonus system, a bonus of 50% of the time saved is given to employees. Calculate the earnings of G. Henry using the straight piecework incentive scheme from the (4 marks) information provided below. INFORMATION G. Henry is employed by Royal Manufacturers and is paid R250 per hour. His normal working day is 9 hours. The standard time to produce a product is 5 minutes. If G. Henry produces more than his quota, he receives 1½ times the hourly rate on the additional output. G. Henry produced 132 units for the day.

Answers

The annual economic order quantity for GM Electronics is approximately 240 alarm systems.

To calculate the annual economic order quantity (EOQ), we need the following information:

Expected monthly sales: 800 alarm systems

Selling price per alarm system: R4,000

Cost price per alarm system: R2,000

Inventory holding cost: 1% of the unit cost price

Cost of placing an order: R60

The formula to calculate EOQ is:

EOQ = √[(2 * Annual Demand * Cost per Order) / Holding Cost per Unit]

First, we need to calculate the annual demand:

Annual Demand = Monthly Sales * 12

Annual Demand = 800 * 12 = 9,600 alarm systems

Next, we can calculate the holding cost per unit:

Holding Cost per Unit = Unit Cost Price * Inventory Holding Cost

Holding Cost per Unit = R2,000 * 0.01 = R20

Now we can plug these values into the EOQ formula:

EOQ = √[(2 * 9,600 * 60) / 20]

EOQ = √(1,152,000 / 20)

EOQ = √57,600

EOQ ≈ 240 alarm systems

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Decompose the function f(x)=√√-2² +52-6 as a composition of a power function g(x) and a quadratic function h(z) : g(x) = h(z) Give the formula for the reverse composition in its simplest form: h(g(x)) =

Answers

We need to decompose the given function f(x) as a composition of a power function g(x) and a quadratic function h(x).

Therefore, we have to find h(x) such that f(x) = h(g(x)).Let h(x) = √(x + 52) - 6

We can express f(x) as a composition of a power function g(x) and a quadratic function h(x) as:

f(x) = h(g(x))⇒ f(x) = √(g(x) + 52) - 6⇒ f(x) = √(x² + 52) - 6

Hence, g(x) = x² and h(x) = √(x + 52) - 6.

We have to find the formula for the reverse composition in its simplest form i.e. h(g(x))

So, h(g(x)) = √(g(x) + 52) - 6 = √(x² + 52) - 6

Therefore, the formula for the reverse composition of the given function is h(g(x)) = √(x² + 52) - 6.

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Which specification is NOT acceptable according to Superpave for aggregates used in an asphalt layer with the thickness of 3.5 in under the traffic of 2 million ESAL. a) Passing sieve #4 (4.75 mm) = 36% b) Flat and Elongated percent = 9% c) Sand Equivalent of fine aggregates = 41% d) Percentage of particles with one or more fractured faces of course aggregates = 74%

Answers

According to Superpave specifications for aggregates used in an asphalt layer with a thickness of 3.5 inches under a traffic of 2 million ESAL, the specification that is NOT acceptable is d) Percentage of particles with one or more fractured faces of coarse aggregates = 74%.

Superpave is a method for designing asphalt mixes that takes into consideration the traffic conditions and the properties of the aggregates to ensure long-lasting and durable pavements. In this case, the specification for the percentage of particles with one or more fractured faces of coarse aggregates should be less than 10%, as per Superpave guidelines.

Having a percentage of 74% means that a significant number of particles have fractured faces, which indicates a lower resistance to stress and potential for premature pavement failure. Therefore, this specification does not meet the Superpave requirements for aggregates in an asphalt layer with the given thickness and traffic conditions.

To summarize, according to Superpave specifications, the percentage of particles with one or more fractured faces of coarse aggregates should be less than 10%, making option d) not acceptable for the given scenario.

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In 2008, a small town has 8500 people. At the 2018 census, the population had grown by 28%. At this point 45% of the population is under the age of 18. How many people in this town are under the age of 18? A. 1071 B. 2380 C. 3224 D. 4896

Answers

The small town's population in 2018 was 10880 people. At this point, there were 4896 people under 18 in the town.

To answer the given question, we can use the following formula:

New Value = Old Value + (Percentage Increase / 100) * Old Value

In 2008, the population of the small town was 8500 people. According to the question, the town's population had grown by 28% at the 2018 census. Therefore, we can find the population of the town in 2018 by using the formula mentioned above as follows:

New Value = 8500 + (28 / 100) * 8500

= 8500 + 2380

= 10880 people

At this point, 45% of the population is under 18. Therefore, to find out the number of people under the age of 18, we can multiply the total population of the town in 2018 by 45 / 100 as follows:

Number of people under the age of 18 = 45 / 100 * 10880

= 4896 people

Therefore, the correct option is D. The small town's population in 2018 was 10880 people. At this point, there were 4896 people under 18 in the town.

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Find and show how you found the standard deviation for the data. X 34 38 25 41 47

Answers

The standard deviation for the given data is approximately 7.35.

The mean (average) of the data is

Mean (μ) = (34 + 38 + 25 + 41 + 47) / 5 = 37

Now subtract the mean from each data point and square the result.

(34 - 37)^2 = 9

(38 - 37)^2 = 1

(25 - 37)^2 = 144

(41 - 37)^2 = 16

(47 - 37)^2 = 100

The sum of the squared differences.

9 + 1 + 144 + 16 + 100 = 270

Divide the sum by the total number of data points (5) to find the variance.

Variance (σ^2) = 270 / 5 = 54

Take the square root of the variance to find the standard deviation.

Standard Deviation (σ) = √54 ≈ 7.35

Therefore, the standard deviation for the data X 34 38 25 41 47 is approximately 7.35.

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suppose that the terminal side of angle (alpha) lies in Q1 and
the terminal side of angle (Beta) lies in Q1. If tan(alpha)= - 8/15
and cos(Beta) = 5/8. find the exact value of cos(alpha-Beta).

Answers

[tex]cos(alpha)]^2) * (5/8) + (-8/15) * cos(alpha) * sqrt(1 - [5/8]^2)[/tex]

Now you can substitute the values of cos(alpha) and cos(beta) into the expression to find the exact value of cos(alpha - beta).

To find the exact value of cos(alpha - beta), we'll need to use trigonometric identities to express cos(alpha - beta) in terms of trigonometric functions of alpha and beta.

We'll start by using the trigonometric identity for cos of the difference of two angles:

[tex]cos(alpha - beta) = cos(alpha) * cos(beta) + sin(alpha) * sin(beta)[/tex]

Given that tan(alpha) = -8/15, we can use the fact that tan(alpha) = sin(alpha) / cos(alpha) to determine sin(alpha) and cos(alpha).

Since the terminal side of angle alpha lies in Q1, both sin(alpha) and cos(alpha) are positive. We can use the Pythagorean identity to find the values:

[tex]sin(alpha) = tan(alpha) * cos(alpha) = (-8/15) * cos(alpha)[/tex]

cos(alpha) = sqrt(1 - [tex]sin^2[/tex](alpha))

Similarly, since the terminal side of angle beta lies in Q1 and cos(beta) = 5/8, we can use the Pythagorean identity to find sin(beta):

sin(beta) = sqrt(1 - [tex]cos^2[/tex](beta))

Now, let's substitute these values into the expression for cos(alpha - beta):

cos(alpha - beta) = cos(alpha) * cos(beta) + sin(alpha) * sin(beta)

                 = sqrt(1-  [tex]sin^2[/tex](alpha)) * (5/8) + (-8/15) * cos(alpha) * sqrt(1 - [tex]cos^2[/tex](beta))

Simplifying further:

cos(alpha - beta) = sqrt(1 - [(-8/15) * [tex]cos(alpha)]^2) * (5/8) + (-8/15) * cos(alpha) * sqrt(1 - [5/8]^2)[/tex]

Now you can substitute the values of cos(alpha) and cos(beta) into the expression to find the exact value of cos(alpha - beta).

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Differentiate using the Fundamental Theorem of Calculus. \[ \frac{d}{d x} \int_{0}^{\sin (x)} t d t \]

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The above expression evaluates the rate at when the angle between the user’s device and the device,.  [tex]\[\frac{d}{dx} \int_0^{\sin(x)}tdt=\sin(x)\cos(x)\][/tex]

The Fundamental Theorem of Calculus states that if the function f(x) is continuous on an interval [a, b] and if F(x) is an antiderivative of f(x) on the interval [a, b], then [tex]\[\int_a^bf(x)dx=F(b)-F(a)\][/tex]

.The given expression is [tex]\[\frac{d}{dx} \int_0^{\sin(x)}tdt\][/tex]

.Now, let's find the antiderivative of the integrand and then use the FTC to evaluate the expression.\[\int td t=\frac{t^2}{2}+C\]where `C` is the constant of integration.Using this[tex],\[\int_0^{\sin(x)}tdt=\frac{\sin^2(x)}{2}+C_1\][/tex]Differentiating both sides using the Chain Rule[tex],\[\frac{d}{dx}\int_0^{\sin(x)}tdt=\frac{d}{dx}\left[\frac{\sin^2(x)}{2}+C_1\right]\][/tex]

Using the Power Rule,[tex]\[\frac{d}{dx}\int_0^{\sin(x)}tdt=\frac{d}{dx}\frac{\sin^2(x)}{2}=\sin(x)\cos(x)\][/tex]

Therefore, [tex]\[\frac{d}{dx} \int_0^{\sin(x)}tdt=\sin(x)\cos(x)\][/tex].

The above expression evaluates the rate at which the content loaded when the angle between the user’s device and the device, the content is loaded on, changes.

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Polar coordinates of a point are given. Find the rectangular coordinates of (4, -180°) O (0, -4) O (-4,0) O (0,4) O (4,0)

Answers

The rectangular coordinates of points (4, -180°), (0, -4), (-4,0), (0,4), and (4,0) can be found from the polar coordinates of the points. In polar coordinates, we use the distance r and the angle θ. We can convert these into rectangular coordinates using the following equations:x = r cos θy = r sin θ1.

For point (4, -180°):r = 4, θ = -180°x = 4 cos (-180°) = -4y = 4 sin (-180°) = 02. For point (0, -4):r = 0, θ = -4x = 0 cos (-4) = 0y = 0 sin (-4) = 03. For point (-4,0):r = 4, θ = 0°x = 4 cos (0°) = 4y = 4 sin (0°) = 04. For point (0,4):r = 4, θ = 90°x = 4 cos (90°) = 0y = 4 sin (90°) = 45. For point (4,0):r = 4, θ = 0°x = 4 cos (0°) = 4y = 4 sin (0°) = 0

The rectangular coordinates of the points are:(-4, 0), (0, -4), (4, 0), (0, 4), and (4, 0).

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Complete the axiomatization by using and add a rule of universal generalization a) (∀1∀1)∀xA→A(y/x)∀xA→A(y/x), provided yy is free for xx in AA b) (∀2∀2)∀x(A→B)→(A→∀xB)∀x(A→B)→(A→∀xB), provided xx does not occur fiee in A

Answers

The original formulation of "∀1∀1)∀xA→A(y/x)∀xA→A(y/x), provided yy is free for xx in AA" is the strongest result we can establish.

Given that a) (∀1∀1)∀xA→A(y/x)∀xA→A(y/x), provided yy is free for xx in AA b) (∀2∀2)∀x(A→B)→(A→∀xB)∀x(A→B)→(A→∀xB), provided xx does not occur free in A, To add a rule of universal generalization:150. (∀2)A→∀xA150. ∀xA→A(y/x)∀xA→A(y/x), provided yy is free for xx in AA .Here we cannot prove an existential quantification, so we cannot deduce a universal quantification.

Therefore, the original formulation of "∀1∀1)∀xA→A(y/x)∀xA→A(y/x), provided yy is free for xx in AA" is the strongest result we can establish .A universal generalization is a logical rule that allows the generalization of a specific predicate with a free variable to a universal predicate.

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5. Find a differential operator of lowest order that annihilates the given function. You may certainly leave your operators in factored form. b. \( 4 x e^{-3 x}+e^{-3 x}+8 \sin (4 x) d. 6x 2
e x
sin(7x)

Answers

The product rule for differentiation tells us that[tex]$$(fg)'=f'g+fg'.$$[/tex]We need to find a differential operator [tex]$D$[/tex]of lowest order such that[tex]$Df(x)=0$[/tex]. We observe that both $f(x)$ and[tex]$f'(x)$ involve $e^{-3x}$[/tex], so we begin with [tex]$D=e^{3x}\frac{d}{dx}$.[/tex]

Then [tex]$$Df(x)=e^{3x}\frac{d}{dx}\left(4xe^{-3x}\right)=e^{3x}\left(4e^{-3x}-12xe^{-3x}\right)=4-12x.$$[/tex]Hence [tex]$Df(x)=0$[/tex]if and only if [tex]$x=1/3$.b. For $f(x)=4xe^{-3x}+e^{-3x}+8\sin(4x)$[/tex]we have[tex]$$(4xe^{-3x}+e^{-3x})=(4x+1)e^{-3x}.$$[/tex]Then[tex]$$f(x)=(4x+1)e^{-3x}+8\sin(4x).$$.[/tex]

We seek a differential operator $D$ of lowest order such that $Df(x)=0$. We observe that both $f(x)$ and $f'(x)$ involve $e^{-3x}$, so we begin with [tex]$D=e^{3x}\frac{d}{dx}$. Then$$Df(x)=e^{3x}\frac{d}{dx}\left[(4x+1)e^{-3x}+8\sin(4x)\right]=e^{3x}\left[-12x-11e^{-3x}+32\cos(4x)\right].$$.[/tex]

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calculus 3
12
Evaluate the following integral. \[ \int_{1}^{5} \int_{0}^{2}\left(4 x^{2}+y^{2}\right) d x d y= \]

Answers

The value of the given integral is 126.

To evaluate the given double integral, we can integrate with respect to x first and then integrate with respect to y.

[tex]\[\int_{1}^{5} \int_{0}^{2} (4x^2 + y^2) \, dx \, dy\][/tex]

Integrating with respect to x:

[tex]\[\int_{1}^{5} \left( \int_{0}^{2} (4x^2 + y^2) \, dx \right) \, dy\]\[\int_{1}^{5} \left[ \frac{4}{3}x^3 + xy^2 \right]_{0}^{2} \, dy\]\[\int_{1}^{5} \left( \frac{4}{3}(2)^3 + 2y^2 - \frac{4}{3}(0)^3 - 0y^2 \right) \, dy\]\[\int_{1}^{5} \left( \frac{32}{3} + 2y^2 \right) \, dy\][/tex]

Integrating with respect to y:

[tex]\[\left[ \frac{32}{3}y + \frac{2}{3}y^3 \right]_{1}^{5}\]\[\left( \frac{32}{3}(5) + \frac{2}{3}(5)^3 \right) - \left( \frac{32}{3}(1) + \frac{2}{3}(1)^3 \right)\]\[\frac{160}{3} + \frac{250}{3} - \frac{32}{3} - \frac{2}{3}\]\[\frac{378}{3}\]\[\frac{126}{1}\][/tex]

So, the value of the given integral is 126.

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Evaluate The Limit Lims→1s−1s+51−61

Answers

The left-hand limit and right-hand limit are different, the overall limit does not exist. Therefore, the limit of the expression as s approaches 1 is undefined.

To evaluate the limit, we substitute the value 1 into the expression and simplify: Lim [s→1] (s - 1) / (s + 5)

Plugging in s = 1: (1 - 1) / (1 + 5)

0 / 6

= 0

However, this is an indeterminate form, as we have 0 divided by a non-zero number. In this case, we cannot determine the limit simply by substituting the value. We need to further analyze the expression.

To do so, we can factor the numerator and denominator: Lim[s→1] (s - 1) / (s + 5) = lim[s→1] [(s - 1) / (s + 5)] * [(1 / 1)]

Now, if we directly substitute s = 1, we get 0/6, which is still an indeterminate form. This suggests that the limit does not exist.

To confirm this, we can consider the behavior of the expression as s approaches 1 from the left and right.

Approaching 1 from the left (s < 1): Lim[s→1^-] (s - 1) / (s + 5) = (-) / (+) = -∞

Approaching 1 from the right (s > 1): Lim[s→1^+] (s - 1) / (s + 5) = (+) / (+) = +∞

Since the left-hand limit and right-hand limit are different, the overall limit does not exist. Therefore, the limit of the expression as s approaches 1 is undefined.

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Use the half-angle identities to find cos( 37T and < x < 2π. 2 NOTE: Enter the exact answer. COS () if csc(x) = -7 II

Answers

Given that[tex]csc(x) = -7[/tex]It is known that [tex]cscθ=1/sinθ[/tex]Therefore, sinθ=-1/7Let's use the half angle identity for cosine [tex]cos(θ/2)=± √(1+cosθ)/2[/tex]Let's find the value of cosθTo find the value of cosθ.

We need to find the value of tanθ as follows.[tex]tanθ=sinθ/cosθ=(-1/7)/cosθ= -1/(7cosθ)[/tex]

We know that [tex]tan^2θ=sec^2θ-1=(1/cos^2θ)-1=1/(cos^2θ)-1[/tex]

On substituting tan^2θ value, we get[tex]1/(cos^2θ)-1=(-1/7)^2[/tex]

Therefore,[tex](1/cos^2θ) = (1/49)+1On[/tex] solving, we get [tex]cos^2θ= 49/50[/tex]

Therefore[tex], cosθ=± √(49/50)[/tex]

Let's find the value of [tex]cos(θ/2)cos(θ/2)= ± √(1+cosθ)/2[/tex]

We have two values of cosθ.

Let's take the positive value[tex]cos(θ/2)= √(1+√(49/50))/2cos(θ/2)= √(99+7√2)/20[/tex]

Now let's substitute θ= 37πNow, [tex]cos(37π/2)= cos(37π/4)/2 = √(99+7√2)/20 = 0.9651 (approx)[/tex]

Similarly, let's find the value of [tex]cos(2π)cos(2π)= cos(π) as 2π= π+π = π/2 + π/2[/tex]

We know that cos(π/2)=0 and [tex]sin(π/2)=1[/tex]

Therefore, [tex]cos(π/2)= ±√(1-sin^2(π/2)) = 0[/tex]

Therefore, [tex]cos(2π)=cos(π)=0[/tex] (exact answer)

Hence, the values of [tex]cos(37π/2)[/tex] and cos(2π) are 0.9651 (approx) and 0 (exact) respectively.

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Select the correct answer. Each statement describes a transformation of the graph of y = x. Which statement correctly describes the graph of y = x − 8? A. It is the graph of y = x translated 8 units up. B. It is the graph of y = x translated 8 units to the left. C. It is the graph of y = x translated 8 units down. D. It is the graph of y = x where the slope is decreased by 8.

Answers

The correct answer is A. It is the graph of y = x translated 8 units up.

To understand why option A is correct, let's analyze the equation y = x − 8. The original equation y = x represents a straight line with a slope of 1 and y-intercept at the origin (0, 0). The addition of −8 to the equation y = x shifts the entire graph vertically downward by 8 units.

By subtracting 8 from the y-values of each point on the original graph, we move every point down by 8 units. This means that for any given x-value, the corresponding y-value is decreased by 8 units. Thus, the graph of y = x − 8 is obtained by translating the graph of y = x vertically upward by 8 units.

Options B, C, and D describe transformations that do not accurately reflect the given equation y = x − 8. A translation 8 units to the left would involve changing the x-values, not the y-values.

A translation 8 units down would require subtracting 8 from the y-values, not the entire equation. Lastly, changing the slope would result in a different equation altogether, not just a vertical translation.

Therefore, the correct description of the graph of y = x − 8 is that it represents the graph of y = x translated 8 units up.

Option A

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An 800 pound tank of chlorine is stored at a water treatment plant. A study of the release scenarios indicates that the entire tank contents could be released as vapor in a period of 10 min. For chlorine gas, evacuation of the population must occur for areas where the vapor concentration exceeds 7.3 mg/m3. Without any additional information, estimate the distance downwind that must be evacuated.

Answers

Based on the given information, the distance downwind that must be evacuated can be estimated by considering the release rate of chlorine gas and the threshold concentration for evacuation.

To estimate the distance downwind that must be evacuated, we need to calculate the dispersion of chlorine gas in the atmosphere. Since no additional information is provided, we can make some assumptions.

First, we convert the given tank weight from pounds to kilograms (1 pound = 0.4536 kg) to obtain the mass of chlorine. Then, we divide the mass by the release time (10 minutes = 600 seconds) to determine the release rate in kilograms per second.

Next, we use the release rate to estimate the volumetric release rate of chlorine gas by dividing it by the density of chlorine gas. Knowing the release rate, we can then use air dispersion models or empirical equations to estimate the distance downwind at which the vapor concentration reaches the evacuation threshold of 7.3 mg/m³.

These models take into account various factors such as wind speed, atmospheric stability, and topography to calculate the dispersion of the gas cloud. By inputting the release rate, wind conditions, and other relevant parameters, we can estimate the distance downwind at which the concentration exceeds the evacuation threshold.

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A 300 mm diameter pipe, of length 1000 m and effective roughness height Ks = 1.0 mm, connects between two reservoirs. If the pipeline conveys water of Kinematic viscosity = 1.1 x 10-6 m²/s at a rate of 0.3 m³/s. The minor headloss can be neglected. (1) Use the Colebrook-White equation to determine the Friction factor X. Use a starting value of λ = 0.025 to start the solution process. (ii) Calculate the Head difference between the two reservoirs

Answers

  H = (X * 1000 m * (0.3 m³/s)^2) / (2 * 9.81 m/s² * 0.3 m) . We get the value of H in meters, which represents the head difference between the two reservoirs.

To determine the friction factor (X) using the Colebrook-White equation, we can follow these steps:

1. Start with an initial guess for the friction factor (λ) of 0.025, as given in the question.

2. Calculate the Reynolds number (Re) using the formula:

  Re = (velocity * diameter) / kinematic viscosity

  In this case, the diameter of the pipe is 300 mm, which is equivalent to 0.3 meters. The velocity of the water is 0.3 m³/s. The kinematic viscosity is given as 1.1 x 10^-6 m²/s.

  Plugging in these values, we get:

  Re = (0.3 * 0.3) / (1.1 x 10^-6) = 8.18 x 10^5

3. Use the Colebrook-White equation to solve for the friction factor (X):

  1 / sqrt(X) = -2 * log10((Ks / (3.7 * diameter)) + (2.51 / (Re * sqrt(X))))

  Substitute the values we know:

  1 / sqrt(λ) = -2 * log10((1.0 mm / (3.7 * 0.3 m)) + (2.51 / (8.18 x 10^5 * sqrt(λ))))

4. Use an iterative process to solve for X. Start by rearranging the equation:

  sqrt(λ) = -2 / log10((1.0 mm / (3.7 * 0.3 m)) + (2.51 / (8.18 x 10^5 * sqrt(λ))))

  Take the square of both sides:

  λ = (-2 / log10((1.0 mm / (3.7 * 0.3 m)) + (2.51 / (8.18 x 10^5 * sqrt(λ)))))^2

5. Iterate this equation, using the value obtained in the previous step for λ, until the value stabilizes.

6. Once the friction factor (X) stabilizes, we can calculate the head difference (H) between the two reservoirs using the Darcy-Weisbach equation:

  H = (friction factor * length * velocity^2) / (2 * acceleration due to gravity * diameter)

  In this case, we know the friction factor (X), the length of the pipe (1000 m), the velocity of the water (0.3 m³/s), and the diameter of the pipe (300 mm).

  Plugging in these values, we get:

  H = (X * 1000 m * (0.3 m³/s)^2) / (2 * 9.81 m/s² * 0.3 m)

  Simplifying, we get the value of H in meters, which represents the head difference between the two reservoirs.

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Make a case (argue/explain) that the probability distribution of any single marble landing in bin number n is answered through the use of a binomial distribution process, discussed in the text, where n is 9 and the probability p of "success" is . You may want to go back and reread portions of Section 7-7 in the text and draw a picture of the quincunx to help you produce your argumentreflect on what has to happen for the marble to land in bin number 0, bin number 3, etc. Dont forget to mention how you define "success", S, and "failure", F, as well as why p = . Note that you must address explicity how the 5 requirements that a procedure must satisfy to result in a binomial probability distribution are met with this situation. Consider the following heat equation du Ju 0x 40, t> 0, t x ur(0, t) = 0, uz (40, t) = 0, t> 0, u(x,0) = sin (7), 0 You have decided to refinance your mortgage. You plan to borrow whatever is outstanding on your current mortgage. The current monthly payment is $2,669 and you have made every payment on time. The original term of the mortgage was 30 years, and the mortgage is exactly four years and eight months old. You have just made your monthly payment. The mortgage interest rate is 6.359% (APR). How much do you owe on the mortgage today? The amount you owe today is $ (Round to the nearest dollar.) The owner of a convenience store near Salt Lake City in Utah has been tabulating weekly sales at the store, excluding gas. The accompanying table shows a portion of the sales for 30 weeks.WeekSales15602.480025742.880035519.280045723.120055606.640065720.000075494.320085385.120095026.3200105213.5200115241.6000125636.8000135318.5600145279.0400155126.1600165440.2400175197.9200185116.8000195172.9600205084.5600215264.4800224916.0800235315.4400245600.4000255237.4400265062.7200275238.4800285568.1600295218.7200305414.24001. Report the performance measures for the techniques in parts a and b. (Do not round intermediate calculations. Round final answers to 2 decimal places.) What remote administration tools are used in your workplace? Would you suggest others based on what you just learned? Martha invested $6,000 in a qualified tuition program for the benefit of her son. Four years later her son withdrew $8,000, the entire balance in the program, to pay his college tuitionMarthas son must include the $2,000 ($8,000-$6,000) in his gross income when the funds are used to pay the tuitionMartha must include $8,000 in her gross incomeMartha is not required to include $2,000 ($8,000-$6,000) in her gross income when the funds are used to pay the tuitionMarthas son must include $8,000 in his gross income