28 is the geometric mean of 13 and another number. Find the number and round your answer to the nearest hundredth

Answers

Answer 1

To find the number when 28 is the geometric mean of 13 and that number, we'll use the formula for the geometric mean: √(a * b) = GM, where a and b are the two numbers, and GM is the geometric mean. In this case, a = 13, GM = 28.

Step 1: Substitute the given values into the formula:
√(13 * b) = 28

Step 2: Square both sides to get rid of the square root:
(√(13 * b))^2 = 28^2
13 * b = 784


Step 3: Divide both sides by 13 to isolate b:
b = 784 / 13
b ≈ 60.31


So, the other number is approximately 60.31 when rounded to the nearest hundredth. In summary, 28 is the geometric mean of 13 and 60.31, as √(13 * 60.31) ≈ 28.

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Related Questions

Gilberto Brought $36. 50 to the state fair. He bought a burger a souvenir and a pass. The burger was 1/3 as much as the souvenir and the souvenir cost 1/2 the cost of the pass. Gilberto had $4. 00 left over after buying these items

Answers

Gilberto brought $69.00 to the state fair.

How much money did Gilberto bring to the state fair originally?

Let's start by assigning variables to represent the unknown values in the problem:

Let x be the cost of the pass.The cost of the souvenir is half the cost of the pass, so the souvenir costs (1/2)x.The cost of the burger is 1/3 the cost of the souvenir, so the burger costs (1/3)(1/2)x = (1/6)x.

According to the problem, the total amount spent by Gilberto is equal to $36.50, so we can set up an equation:

x + (1/2)x + (1/6)x = 36.5

Simplifying the equation, we can combine the like terms:

(5/6)x = 36.5

To solve for x, we can multiply both sides by the reciprocal of 5/6:

x = 36.5 / (5/6) = $43.80

So the cost of the pass is $43.80. Using the values we assigned earlier, we can find the cost of the souvenir and the burger:

The souvenir costs half the cost of the pass, which is (1/2)($43.80) = $21.90.The burger costs 1/3 the cost of the souvenir, which is (1/3)($21.90) = $7.30.

Therefore, Gilberto spent $43.80 on the pass, $21.90 on the souvenir, and $7.30 on the burger, for a total of $43.80 + $21.90 + $7.30 = $73.00.

However, we are also told that Gilberto had $4.00 left over after buying these items.

So we can subtract that from the total amount spent to get the initial amount of money that Gilberto brought to the fair:

$73.00 - $4.00 = $69.00

Therefore, Gilberto brought $69.00 to the state fair.

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A sample size a 28 produced test statistic is T equals 2. 51

Answers

The mathematical probabilities of p values lies between range from 0 to 1 and  using technology, p-value is 0.050086.

Sample  = n = 28.

t = 2.051

P value by the means of the technology is 0.050086.

The likelihood of receiving outcomes from a statistical hypothesis test that are at least as severe as the actual results, provided the null hypothesis is true, is known as the p-value in statistics. The p-value provides the minimal level of significance at which the null hypothesis would be rejected as an alternative to rejection points. The alternative hypothesis is more likely to be supported by greater evidence when the p-value is lower.

P-value is frequently utilised by government organisations to increase the credibility of their research or reports. The U.S. Census Bureau, for instance, mandates that any analysis with a p-value higher than 0.10 be accompanied by a statement stating that the difference is not statistically significant from zero.

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Complete question:

A significance test was performed to test H o : u = 2 versus the alternative He: u # 2. A sample of size 28 produced a standardized test statistic of t = 2.051. Assume all conditions for inference are met. Using Table B, the P-value falls between           and         . (Do not round) Using technology the P-value is          . (Round to 4 decimal places)

Sam makes mini pancakes for breakfast. Each pancake is a circle with a diameter of 6 centimeters.

a) Calculate the circumference of each pancake.

b) Calculate the area of each pancake.

Answers

Answer:

a) 18.84 cm

b) 28.26 cm²

Step-by-step explanation:

We Know

Each pancake is a circle with a diameter of 6 centimeters.

a)  Calculate the circumference of each pancake.

Circumference of circle = d · π

d = 6 cm

We Take

6 · 3.14 = 18.84 cm

So, the circumference of each pancake is 18.84 cm.

b) Calculate the area of each pancake.

Area of circle = r² · π

r = 1/2 · d

r = 1/2 · 6 = 3 cm

We Take

3² · 3.14 = 28.26 cm²

So, the area of each pancake is 28.26 cm².

A large corporation with monopolistic control in the marketplace has its average daily costs, in dollars, given by C =700 /x + 300x + x^2. The daily demand for x units of its product is given by p = 120,000 - 150 dollars. Find the quantity that gives maximum profit.

Answers

The quantity that gives maximum profit is approximately 111.55 units.

How to calculate the quantity that gives maximum profit

To find the quantity that gives maximum profit, we need to first find the revenue function and then the profit function.

The revenue function is given by:

R(x) = xp = x(120,000 - 150x)

The profit function is given by:

P(x) = R(x) - C(x) = x(120,000 - 150x) - (700/x + 300x + x²)

To find the quantity that gives maximum profit, we need to find the derivative of the profit function and set it equal to zero:

P'(x) = 120,000 - 300x - 700/x² - 2x

Setting P'(x) equal to zero and solving for x, we get:

120,000 - 300x - 700/x² - 2x = 0

Multiplying both sides by x^2, we get:

120,000x² - 300x³ - 700 - 2x³ = 0

Simplifying, we get:

300x³ + 2x³ - 120,000x² - 700 = 0

Dividing both sides by 2, we get:

151x³ - 60,000x² - 350 = 0

Using a graphing calculator or numerical methods, we can find that the real root of this equation is approximately x = 111.55.

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You saved $3 during Week 1, $6 during Week 2, $12 during Week 3, and $21 during Week 4. If the pattern continues, how much money will you save during Weeks 8 and 9 combined?

Answers

It looks like the amount of money saved is increasing by a multiple of 2 each week. So, you would save $42 during week 5, $84 during week 6, $168 during week 7, $336 during week 8, and $672 during week 9. Therefore, you would save a total of $1,008 during weeks 8 and 9 combined.

The diameter of a circle measures 10m. What is the circumference of the circle?

Use for 3. 14 and do not round your answer. Be sure to include the correct unit in your answer

Answers

The circumference of the circle with a diameter of 10m is 31.4m, using 3.14 as the value of pi and including the correct unit in the answer.

The formula for the circumference of a circle is C = πd, where C is the circumference and d is the diameter. Substituting the given value of the diameter, we get C = 3.14 x 10m = 31.4m as the circumference of the circle.

Since the value of pi is irrational, it cannot be expressed as a finite decimal or fraction, so we use an approximation, such as 3.14, to calculate the circumference. It is important to include the correct unit, which is meters in this case, in the answer to indicate the quantity being measured. Therefore, the circumference of the circle is 31.4m.

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Given the following joint PDF function of two continuous random variables x and y :

[tex]f(x,y) = \left \{ {{1/4x^2 +1/4y^2 +1/6xy} \atop {0}} \right. 0\leq x\leq 1 ; 0\leq y\leq 2[/tex]\


a) find the distribution function F(x,y)

b) find marginal PDF for f(x) and f(y)

c) find P ( 0[tex]0\leq x\leq 1/2 , 0\leq y\leq 1/2[/tex]

d) if u= 2x-y and v = -x+y find the dense joint density function of u and v

Answers

A. The distribution function F(x,y) is ¹¹/₁₈ + ¹/₁₂ x² - ¹/₁₈ y² + ¹/₁₂ xy

B. The marginal PDF of x is ¹/₂x + ¹/₆ + ¹/₁₂x² for 0≤x≤1 and for y is /₂y + ¹/₆ + ¹/₁₂y² for 0≤y≤2

C. P(0≤x≤1/2, 0≤y≤1/2) is ¹/₃₂ + ¹/₉₆ x² for 0≤x≤1/2

D. The joint PDF of u=2x-y and v=-x+y is f(u,v) = (1/27)(2u^2+2v^2-2uv)

How did we get these values?

a) To find the distribution function F(x,y), integrate the joint PDF over the appropriate limits.

F(x,y) = ∫∫f(u,v)dudv

The limits of integration are not specified, so, determine them from the limits of the variables x and y.

So,

F(x,y) = ∫∫f(u,v)dudv

= ∫∫f(x+y,x-y)dudv (substituting u = x+y and v = x-y)

= ∫∫(¹/₄(u²+v²)+¹/₆(u²-v²))dudv (substituting x and y back in terms of u and v)

The limits of integration for u and v can be found by solving for u and v in terms of x and y as follows:

u = x+y

v = x-y

x = (u+v)/2

y = (u-v)/2

0 ≤ x ≤ 1; 0 ≤ y ≤ 2

implies

0 ≤ (u+v)/2 ≤ 1; 0 ≤ (u-v)/2 ≤ 2

Solving the above inequalities gives the following limits:

0 ≤ u ≤ 2; -u ≤ v ≤ u;

Thus,

F(x,y) = ∫∫(¹/₄(u²+v²)+¹/₆(u²-v²))dudv

= ∫²₀ ∫ᵘ_(-u) (1/4(u²+v²)+¹/₆(u²-v²))dvdu

= ¹¹/₁₈ + ¹/₁₂ x² - ¹/₁₈ y² + ¹/₁₂ xy

b) To find the marginal PDF of x, integrate the joint PDF over all possible values of y:

f(x) = ∫f(x,y)dy

So,

f(x) = ∫²₀ (¹/₄x + ¹/₄y²/x + ¹/₆y) dy

= ¹/₂x + ¹/₆ + ¹/₁₂x² for 0≤x≤1

In the same way, find the marginal PDF of y, by integrating the joint PDF over all possible values of x:

f(y) = ∫f(x,y)dx

So,

f(y) = ∫¹₀ (¹/₄x²/y + ¹/₄y + ¹/₆xy) dx

= ¹/₂y + ¹/₆ + ¹/₁₂y² for 0≤y≤2

c) To find P(0≤x≤1/2, 0≤y≤1/2), integrate the joint PDF over the appropriate limits:

P(0≤x≤1/2, 0≤y≤1/2) = ∫∫f(x,y)dxdy

So,

P(0≤x≤1/2, 0≤y≤1/2) = ∫¹₀ ∫^(1/2)_0 (¹/₄x² + ¹/₄y²/x + ¹/₆xy) dydx

= ¹/₃₂ + ¹/₉₆ x² for 0≤x≤1/2

d) To find the joint PDF of u=2x-y and v=-x+y, express x and y in terms of u and v and then apply transformation formula.

From the given equations, solve for x and y in terms of u and v as follows:

x = (u+v)/3

y = (v-u)/3

Now, find the Jacobian of the transformation:

J = ∂(x,y)/∂(u,v) =

| ∂x/∂u ∂x/∂v |

| ∂y/∂u ∂y/∂v |

=

| 1/3 1/3 |

| -1/3 1/3 |

So, |J| = 2/9

Using the transformation formula for joint PDFs:

f(u,v) = f(x(u,v), y(u,v)) |J|

Substituting x and y in terms of u and v:

f(u,v) = f((u+v)/3, (v-u)/3) (2/9)

Substituting the given joint PDF for f(x,y), we get:

f(u,v) = (¼((u+v)/3)² + ¼((v-u)/3)² + ⅙((u+v)/3)((v-u)/3))(2/9)

Simplify:

f(u,v) = (1/27)(2u²+2v²-2uv)

So, the joint PDF of u=2x-y and v=-x+y is:

f(u,v) = (1/27)(2u²+2v²-2uv)

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SHOW YOUR W
(2x - 1)(3x + 4) = 0

Answers

Answer:

x = 1/2, -4/3

Step-by-step explanation:

(2x - 1)(3x + 4) = 0

We know any number multiplied by 0 will be equal 0.

2x - 1 = 0

2x = 1

x = 1/2

3x + 4 = 0

3x = -4

x = -4/3

So, x = 1/2, -4/3

[tex]2x(3x + 4) - 1(3x + 4) = 0[/tex]

[tex]6 {x}^{2} + 8x - 3x - 4 = 0[/tex]

[tex]6 {x}^{2} + 5x - 4 = 0[/tex]

[tex]6 {x}^{2} + 5x = 4[/tex]

Lines c and d are perpendicular. The equation of line c is y=−1/2x+1 . What is the equation of line d ?

Answers

Answer:

y=2x+3

Step-by-step explanation:

When a line is perpendicular to another line, it means that the slope is the opposite reciprocal of the other slope.

We can see that line C has a slope of -1/2, meaning that the opposite reciprocal is 2.  This overall means that line D has a slope of 2.

We can also see that line d (from the graph) has a y-intercept of (0,3).

To write this equation:

y=2x+3

Hope this helps! :)

There are four auto body shops in Bangor, Maine, and all claim to promptly repair cars. To check if there is any difference in repair times, customers are randomly selected from each repair shop and their repair times in days are recorded. The output from a statistical software package is: Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the 0. 05 significance level. Compute the critical value. (Round your answer to 2 decimal places. ) State the decision regarding the null hypothesis

Answers

At a significance level of 0.05, the critical value is 2.54, and we fail to reject the null hypothesis that there is no difference in the mean waiting times at the four auto body shops based on the ANOVA test results.

To answer this question, we need to perform an analysis of variance (ANOVA) test to determine if there is a significant difference in the mean waiting times at the four auto body shops. The null hypothesis is that there is no difference in the mean waiting times.

Using the given data, we can compute the critical value using the F-distribution table with three degrees of freedom for the numerator (number of groups minus one) and 16 degrees of freedom for the denominator (total sample size minus number of groups). At a significance level of 0.05, the critical value is 2.54.

Next, we need to calculate the test statistic, which is the ratio of the variance between the groups to the variance within the groups. The output from the statistical software package provides the necessary information to compute the test statistic:

Source | SS   | df | MS     | F    |
------------------------------------
Between| 2.98 | 3  | 0.99   | 1.15 |
Within | 48.28| 16 | 3.02   |      |
Total  | 51.26| 19 |        |      |

The test statistic is F = 1.15, which is less than the critical value of 2.54. Therefore, we fail to reject the null hypothesis and conclude that there is not enough evidence to suggest a difference in the mean waiting times at the four auto body shops.

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Alan and Judith begin withdrawing money from their accounts at the same time. Alan has $10,350 in his account and withdraws $1,096 at the end of each month. Judith has $8,400 in her account and withdraws $822 at the end of each month. If they do not make any other deposits or withdrawals, at the end of which month will Judithâs account have more money than Alanâs account?

Answers

Judith's account has less money than Alan's account after 9 months.

We can start by setting up an equation to represent the amount of money in each account after n months, where n is the number of months that have passed:

For Alan's account:

Amount of money after n months = $10,350 - $1,096n

For Judith's account:

Amount of money after n months = $8,400 - $822n

We want to find the value of n for which Judith's account has more money than Alan's account. In other words, we want to find the value of n that satisfies the following inequality:

8,400 - 822n > 10,350 - 1,096n

To solve for n, we can simplify the inequality by combining like terms:

1,096n - 822n > 10,350 - 8,400

274n > 1,950

n > 7.11

Since n represents the number of months, we can round up to the next whole number and conclude that at the end of the 8th month, Judith's account will have more money than Alan's account.

To check this result, we can substitute n=8 into the equations for the amount of money in each account:

For Alan's account: $10,350 - $1,096(8) = $2,942

For Judith's account: $8,400 - $822(8) = $2,256

We can see that Judith's account has less money after 8 months than Alan's account, so the result is not correct.

Let's try again with n=9:

For Alan's account: $10,350 - $1,096(9) = $1,846

For Judith's account: $8,400 - $822(9) = $1,518

We can see that Judith's account has less money than Alan's account after 9 months, so the correct answer is actually that Judith's account never has more money than Alan's account.

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Two parallel runways at an airport are intersected by another runway as shown. Find m∠5 and m∠8 if m∠3=118°

Answers

The value of angle 5 and angle 8 will be 118° and 62° respectively.

How to calculate the angle

Parallel lines are lines that are always the same distance apart and never intersect. In other words, they have the same slope and will never meet or cross each other. The symbol for parallel is ||.

For example, in the Cartesian coordinate system, the equation of a straight line is represented as y = mx + b, where m is the slope of the line and b is the y-intercept. If two lines have the same slope, they are parallel.

The value of angle 5 will be 118. Angle 8 will be:

= 180 - 118

= 62°

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Of students taking both English 12 Honors and a senior level math course (AP Stats, AP Calculus, Pre-Calculus, College Prep Math, or Topics), 37% of students got an A in English, and 24% of students got an A in Math. 16% got an A in both classes.



What is the probability that a randomly selected student got an A in Math, but not English?

Answers

The probability that a randomly selected student got an A in Math, but not English, is 8%

Let A be the event that a student got an A in Math, and B be the event that a student got an A in English. Then, we want to find P(A and not B), or the probability that a student got an A in Math, but not English.

We know that P(A and B) = 0.16, or the probability that a student got an A in both Math and English. We also know that P(B) = 0.37, or the probability that a student got an A in English. Therefore, the probability of a student getting an A in Math, given that they got an A in English, can be calculated using the formula for conditional probability:

P(A | B) = P(A and B) / P(B)

P(A | B) = 0.16 / 0.37

P(A | B) = 0.43

This means that the probability of a student getting an A in Math, given that they got an A in English, is approximately 0.43.

To find the probability of a student getting an A in Math, but not English, we can subtract the probability of getting an A in both classes from the probability of getting an A in Math:

P(A and not B) = P(A) - P(A and B)

P(A and not B) = 0.24 - 0.16

P(A and not B) = 0.08

Therefore, the probability that a randomly selected student got an A in Math, but not English, is 0.08 or 8%.

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Use the method of logarithmic differentiation to find the derivative of x^{sin x} with respect to x. (Your final answer should be in terms of x.) Hint: Let( y = x^{sin x})and your goal is to find dy/dx

Answers

The derivative of y = x^(sin x) with respect to x is:

dy/dx = x^(sin x) * (cos x * ln(x) + sin x * (1/x)).

To find the derivative of y = x^(sin x) with respect to x using logarithmic differentiation, follow these steps:
1. Take the natural logarithm of both sides of the equation:

ln(y) = ln(x^(sin x))
2. Use the properties of logarithms to simplify:

ln(y) = sin x * ln(x)
3. Differentiate both sides with respect to x, using the chain rule and product rule:

(1/y) * dy/dx = cos x * ln(x) + sin x * (1/x)
4. Multiply both sides by y to solve for dy/dx:

dy/dx = y * (cos x * ln(x) + sin x * (1/x))
5. Substitute the original expression for y (y = x^(sin x)) back into the equation:

dy/dx = x^(sin x) * (cos x * ln(x) + sin x * (1/x))
So the derivative of y = x^(sin x) with respect to x is:

dy/dx = x^(sin x) * (cos x * ln(x) + sin x * (1/x)).

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Consider the circle centered at the origin and passing through the point (0, 4)

Answers

Equation of the circle: x^2 + (y - 2)^2 = 4

How to find the equation of the circle?

The circle centered at the origin and passing through the point (0, 4) can be represented by the equation of a circle. The general equation of a circle is (x - h)^2 + (y - k)^2 = r^2, where (h, k) represents the center of the circle and r represents the radius.

Since the center is at the origin (0, 0), the equation simplifies to x^2 + y^2 = r^2. To determine the radius, we can use the point (0, 4) that lies on the circle. Substituting these coordinates into the equation, we get 0^2 + 4^2 = r^2. Simplifying, we find that 16 = r^2.

Therefore, the equation of the circle centered at the origin and passing through the point (0, 4) is x^2 + y^2 = 16.

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Consider the function.
f(x) =1/x - 8
Identify the domain of f. (Give your answer as an interval in the form (*, #). Use the symbol o for infinity, U for combining intervals, and an appropriate type of parentheses "(".")", "I*, or "J" depending on whether the interval is open or closed.
Find f = _____

Answers

The domain of the function f(x) = 1/x - 8 is (-∞, 0) U (0, +∞), and f = 1/x - 8.

The function f(x) is defined as 1/x - 8. The domain of the function is the set of all possible values of x for which the function is defined. Since the function involves division by x, x cannot be equal to zero. Therefore, the domain of f(x) is (-∞, 0) U (0, +∞), which means that x can take any value except 0.

To find f(x), we simply substitute the expression for f(x) in the definition of the function. Therefore, we have:

f(x) = 1/x - 8

This is the final answer. We cannot simplify it any further. The function f(x) represents a hyperbola with a vertical asymptote at x = 0 and a horizontal asymptote at y = -8.

As x approaches 0 from the left, f(x) goes to negative infinity, and as x approaches 0 from the right, f(x) goes to positive infinity. Similarly, as x approaches positive or negative infinity, f(x) approaches 0.

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The basketball started at a height of about 4 feet above the ground. While dribbling the ball traveled downward until it hit the ground, then it returned to its initial height. What is the distance and what is the displacement?

Answers

The distance traveled is 8ft and the displacement is 0ft.

What is the distance and what is the displacement?

The distance traveled is equal to the total distance that the ball travels, in this case it starts 4ft above the ground, then goes to the ground, and then returns to the initial position which is 4ft above the ground, then the total distance is 4ft + 4ft = 8ft

The displacement is equal to the difference between the final position and the inital one, here we know that both are the same, thus, the displacement is  0ft.

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Gabriella needs 120 meters of fence to surround a rectangular garden.
the length of the garden is three times its width, w.
how wide is the fence?
(please solve how the answer is formatted, i already looked at the other posts people made on this question and they did not help)

Answers

Answer is 15 meters


To solve this problem, we can use the formula for the perimeter of a rectangle, which is

P = 2l + 2w,

where P is the perimeter, l is the length, and w is the width.

We are given that Gabriella needs 120 meters of fence, which means that

P = 120.

We are also given that the length of the garden is three times its width, or

l = 3w.

Substituting these values into the formula, we get:

120 = 2(3w) + 2w

Simplifying this equation, we get:

120 = 8w

Dividing both sides by 8, we get:

w = 15

Therefore, the width of the garden is 15 meters.

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What is the tangent plane to z = ln(x−y) at point (3, 2, 0)?

Answers

The equation of the tangent plane to the surface z = ln(x - y) at the point (3, 2, 0) is x - y - z + 1 = 0.

To find the tangent plane to the surface z = ln(x - y) at the point (3, 2, 0), we can use the following steps

Find the partial derivatives of the surface with respect to x and y:

∂z/∂x = 1/(x - y)

∂z/∂y = -1/(x - y)

Evaluate these partial derivatives at the point (3, 2):

∂z/∂x (3, 2) = 1/(3 - 2) = 1

∂z/∂y (3, 2) = -1/(3 - 2) = -1

Use these values to find the equation of the tangent plane at the point (3, 2, 0):

z - f(3,2) = ∂z/∂x (3,2) (x - 3) + ∂z/∂y (3,2) (y - 2)

where f(x,y) = ln(x - y)

Plugging in the values we get:

z - 0 = 1(x - 3) - 1(y - 2)

Simplifying the equation, we get:

x - y - z + 1 = 0

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Find the volume of a pyramid whose base is a square with side lengths of 6 units and height of 8 units.

Answers

Answer:

i think the answer is 96

Step-by-step explanation:

HELP PLEASE 25 points!



This is for entrepreneurship



What can the bank do to comply with their general computer or Internet policy?


Bobby works in a private bank where none of the employees are allowed Internet access due to a strict confidentiality policy. Employees can only access the internal applications. However, for a particular product, Bobby is required to use the Internet and check details online.



The bank can (BLANK)


Bobby’s Internet usage for personal as well as official use

Answers

To comply with their general computer or Internet policy while allowing Bobby to access the internet for a specific task, the bank can implement several measures to monitor and restrict Bobby's Internet usage for personal and official use.


First, the bank can establish a separate, secured network for employees who need internet access for work purposes. This network should be isolated from the internal network to protect sensitive information.Second, the bank can implement strict access controls and authentication measures, such as providing a unique username and password for Bobby to access the internet. Third, the bank can install a firewall and web filtering system that blocks access to non-work-related websites and content. This will prevent personal use of the internet while still allowing access to the necessary websites for Bobby's work.

Fourth, the bank can regularly monitor and audit Bobby's internet usage, including the websites visited, the amount of time spent online, and any data transmitted or received. Finally, the bank should provide training and guidelines to Bobby regarding the acceptable use of the internet for work purposes, emphasizing the importance of confidentiality and adherence to the bank's security policies.

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Raj tells his daughter, “Seven years ago, I was seven times as old as you were then. Also, three years from now, I shall be three times as old as you will be.” Find the present ages of Raj and his daughter. Also, verify the present age of Raj and his daughter graphically

Answers

The present ages of Raj and his daughter are respectively: 42 years and 12 years.

How to solve Algebra Word Problems?

Present Age of Raj =y years

Present Age of daughter =x years

According to Question :

7 Years ago,

y − 7 = 7(x − 7)

⇒ 7x − y − 42 = 0.............(1)

And 3 Years from now

y + 3 = 3(x + 3)

⇒ 3x − y + 6 = 0............(2)

From eq (1) and eq (2)

Subtract eq 2 from eq 1 to get:

7x − 3x − y + y − 42 − 6 = 0

⇒ 4x = 48

⇒ x = 12

Putting x = 12 in Equation (2). we get,

(3 × 12) − y + 6 = 0

⇒ y = 42

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Helpp me please i need to finish before flvs logs me out helppppp
question 2 (essay worth 10 points)
(05.05 mc)
a food truck did a daily survey of customers to find their food preferences. the data is partially entered in the frequency table. complete the table to analyze the data and answer the questions:

part a what percentage of the survey respondents do not like both hamburgers and burritos? (2 points)
part b: what is the marginal relative frequency of all customers that like hamburgers? (3 points)
part c: use the conditional relative frequencies to determine which data point has strongest association of its two factors. use complete sentences to explain your answer. (5 points)

Answers

Step 1: Examine the frequency table

Take a look at the frequency table provided and make sure you understand what it represents. The table should have two columns, one for food preference (hamburgers, burritos, or both) and one for frequency.

Step 2: Complete the frequency table

Complete the frequency table by filling in the missing values. You can do this by using the information provided in the problem statement. Remember that the total frequency should add up to the total number of survey respondents.

Step 3: Calculate percentages

Once the frequency table is complete, you can calculate the percentage of survey respondents who do not like both hamburgers and burritos. To do this, add up the frequency of respondents who selected "hamburgers only," "burritos only," and "neither" (since these respondents do not like both hamburgers and burritos), and divide by the total number of survey respondents. Multiply by 100 to convert to a percentage.

Step 4: Calculate marginal relative frequencies

To calculate the marginal relative frequency of all customers that like hamburgers, you need to divide the frequency of respondents who like hamburgers by the total number of survey respondents. This will give you a percentage.

Step 5: Use conditional relative frequencies

To determine which data point has the strongest association of its two factors, you can use conditional relative frequencies. To calculate the conditional relative frequency of, say, respondents who like hamburgers given that they also like burritos, you need to divide the frequency of respondents who like both hamburgers and burritos by the frequency of respondents who like burritos. Repeat this process for each combination of food preferences.

Step 6: Analyze the data

Based on the conditional relative frequencies you calculated, determine which data point has the strongest association of its two factors. In other words, which combination of food preferences is most likely to occur together? Explain your answer in complete sentences, using the data you calculated to support your reasoning.

I hope this helps! Let me know if you have any further questions or need additional assistance.


What is the actual length of the bus?
7
4
1
***
2
ft
8 9
5 6
3
(-)
x
X
4
4
Understand Scale Drawings-Quiz-Level G
Scale Drawing
7 in..
Actual Bus
Tag
T
2 in.

T
10 ft
1
%

Answers

Since it's a scale, we can take the backsides of both buses. They read 2in and 10ft

12 inches are in one foot, so 120 inches are in 10ft

Next we'll divide [tex]120\div2[/tex] and we get 60.

That's means we can multiply [tex]7 \times 60[/tex], getting 420 inches

To get it back to feet, we divide by 12

[tex]420\div12[/tex] = 35 feet

Therefore, The actual length of the bus is 35 feet

Answer:

its 35

Step-by-step explanation:

SIMPLIFY THE EXPRESSION:

Answers

Answer:

12x - 8y

Step-by-step explanation:

Combine like terms.

10x - 5y + 2x -3y =

= 10x + 2x - 5y - 3y

= 12x - 8y

10x+2x-5y-3y
=12x-8y
Hope it helps

A pyramid 5 meters high has congruent triangular sides and a square base that is 5 meters on each side. Each cross section of the pyramid parallel to the base is a square. What is the volume of the solid in cubic meters?

Answers

The volume of the pyramid is approximately 41.67 cubic meters.

How to find the volume?

To find the volume of the pyramid, we can use the formula:

V = (1/3) x base area x height

Since the base of the pyramid is a square with side length 5 meters, its area is:

base area = side² = 5² = 25 square meters

The height of the pyramid is also given as 5 meters.

Now, we need to find the area of one of the square cross-sections. Since the pyramid has congruent triangular sides, we know that each of these triangles is similar to the original base square.

Therefore, the side length of each square cross-section is proportional to the height of the pyramid, and we can use the ratio of corresponding side lengths to find the area of one of the squares:

5 / 5 = x / 5

where x is the side length of the square cross-section.

Solving for x, we get:

x = 5

Therefore, each of the square cross-sections has an area of 5 x 5 = 25 square meters.

Now, we can substitute the values we have found into the formula for the volume:

V = (1/3) x base area x height

= (1/3) x 25 x 5

= 41.67 cubic meters

Therefore, the volume of the pyramid is approximately 41.67 cubic meters.

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A farmer wants to fence an area of 750 000 m² in a rectangular field and divide it in half with a fence parallel to one of the sides of the rectangle. How can this be done so as to minimize the cost of the fence?

Answers

The farmer should construct a rectangle that is twice as long as it is wide, with dimensions of 1216.56 m x 608.28 m, and should use 7301.36 m of fence to divide it in half parallel to the shorter side in order to minimize the cost of the fence.

To minimize the cost of the fence, the farmer should construct a rectangle that is twice as long as it is wide, with the dividing fence parallel to the shorter side. This will result in two identical rectangles each with an area of 375 000 m².

The perimeter of the rectangle can be calculated as follows:

P = 2L + 2W

where L is the length and W is the width.

Since the area of the rectangle is 750 000 m² and the length is twice the width, we can write:

L x W = 750 000

L = 2W

Substituting L = 2W into the equation for area, we get:

2W x W = 750 000

2W² = 750 000

W² = 375 000

W = 608.28 m

L = 2W = 1216.56 m

So the dimensions of the rectangle are 1216.56 m x 608.28 m.

The perimeter of each rectangle is:

P = 2L + 2W

P = 2(1216.56) + 2(608.28)

P = 3650.68 m

The total length of fence needed is twice the perimeter, since we are dividing the rectangle in half:

Total fence length = 2 x 3650.68 = 7301.36 m

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Calculate d²y/d²x y= -5x2 + x d²y/d²x= Calculate d²y/dx² y= 7/x d²y/dx²=

Answers

To calculate the second derivative of a function, we need to take the derivative of the first derivative. The second derivative gives us information about the curvature of the function. A positive second derivative indicates that the function is concave up, while a negative second derivative indicates that the function is concave down. A second derivative of zero indicates that the function has no curvature at that point.

In the first example given, y = -5x^2 + x, we first find the first derivative by taking the derivative of the function with respect to x. This gives us dy/dx = -10x + 1. To find the second derivative, we take the derivative of dy/dx with respect to x. This gives us d²y/d²x = -10. This indicates that the function has a constant negative curvature, meaning it is concave down everywhere.

In the second example given, y = 7/x, we first find the first derivative by taking the derivative of the function with respect to x. This gives us dy/dx = -7/x^2. To find the second derivative, we take the derivative of dy/dx with respect to x. This gives us d²y/dx² = 14/x^3. This indicates that the function is concave up for positive values of x and concave down for negative values of x. The second derivative is undefined at x = 0, indicating a point of inflection.

Overall, the second derivative gives us important information about the behavior of a function and can help us identify points of inflection and concavity.
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What is half way between 4/5 and 14/15 in its simpelest form

Answers

Half way between 4/5 and 14/15 is 13/15.

To find the halfway point between 4/5 and 14/15, we need to calculate the average of the two fractions. Here's the process:

1. Make sure the fractions have a common denominator. In this case, the least common denominator (LCD) for 5 and 15 is 15.
2. Convert the fractions to equivalent fractions with the common denominator: 4/5 becomes 12/15 (multiply both numerator and denominator by 3), while 14/15 stays the same.
3. Add the two equivalent fractions together: 12/15 + 14/15 = 26/15.
4. Divide the sum by 2 to find the halfway point: (26/15) ÷ 2. To divide a fraction by a whole number, multiply the fraction by the reciprocal of the whole number: 26/15 × 1/2 = 26/30.
5. Simplify the resulting fraction: 26/30 can be simplified by dividing both numerator and denominator by their greatest common divisor (GCD), which is 2 in this case. Thus, 26 ÷ 2 = 13, and 30 ÷ 2 = 15. The simplified fraction is 13/15.

So, the halfway point between 4/5 and 14/15 in its simplest form is 13/15.

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Which fraction shows a correct way to set up the slope formula for the line that passes through the points (-2, 3) and (4, -1)? A. B. C. D

Answers

Hence, [tex]\frac{-1-3}{4-(-2)}[/tex]  is the required fraction.

We know that the slope of a line is defined as the change in y coordinate with respect to the change in x coordinate of that line.

To set up the slope formula for the line that passes through the points (-2, 3) and (4, -1), we can use the formula of the slope

i.e. [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

m is the slope of the line, and (x₁, y₁) and (x₂, y₂) are the coordinates of the two points on the line.

So, x₁ = -2

y₁ = 3

x₂ = 4

y₂ = -1

Substituting the values in the formula

[tex]m = \frac{-1-3}{4-(-2)}[/tex]

Hence, [tex]\frac{-1-3}{4-(-2)}[/tex]  is the required fraction.

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