Jonathan's parents told him that for every 5 hours of Academic Prep work he completes, he would be able to play 3 hours of video games. His friend Lucas's parents told their son he could play 30 minutes for every hour of Academic Prep work he completes. If both boys spend the same amount of time on Academic Prep work this week, which boy would get more time playing video games? How do you know? *

Answer:

Step-by-step explanation:

z is directly proportional to x

If z = 12 when x = 3

Then we have

So the coefficient is 4

When z = 18, we have

yes , i use edgenutiy. I have to at my school.

Answer:

f(-5) = -43

Step-by-step explanation:

Step 1: Define

f(x) = -2x² + 7

f(-5) is x = -5

Step 2: Substitute and Evaluate

f(-5) = -2(-5)² + 7

f(-5) = -2(25) + 7

f(-5) = -50 + 7

f(-5) = -43

The solution to the system of inequalities is the region above the line y = -3x – 1 and the region above the line y = 3x – 2.

To solve the system of inequalities, we first graph the lines y = -3x – 1 and y = 3x – 2 on the coordinate plane. The line y = -3x – 1 has a negative slope and y-intercept at -1. It is a straight line that goes downward from left to right. The line y = 3x – 2 has a positive slope and y-intercept at -2. It is a straight line that goes upward from left to right.

The inequality y > -3x – 1 represents all the points above the line y = -3x – 1, and the inequality y > 3x – 2 represents all the points above the line y = 3x – 2. The solution to the system of inequalities is the region that satisfies both conditions, which is the region above both lines.
In summary, the solution to the system of inequalities is the region above the line y = -3x – 1 and the region above the line y = 3x – 2.

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Answer:

Step-by-step explanation:

First get y alone

So add 4x to each side

Then divide by 3 on each side

Answer:

m =1

Step-by-step explanation:

4(m-1) - 3(m-5) =12​

4m -4 -3m + 15 = 12

4m - 3m = 12-15 +4

m = 1

Answer:

4m-4 - 3m+15 =12

4m-3m +15-4 = 12

m +11 = 12

m = 12-11

m = 1

Step-by-step explanation:

Perimeter = 114 units

2 (4x + 5x + 3) = 114

18x + 6 = 114

X = 6

Length of RS = 4x = 24

Answer:

Whats the question?

Step-by-step explanation:

Answer:

255.53

Step-by-step explanation:

..................

The operating profit or loss on the coats sold during the promotional sale can be calculated using the equation: (0.80 * (SP - (0.46 * SP + 0.30 * SP))) - $67.50.


The operating profit or loss on the coats sold during the promotional sale can be calculated by considering the cost price, operational expenses, and profit margin. Here's how you can calculate it step by step:

1. Cost Price: The retailer buys the winter coats from the supplier for $67.50.

2. Selling Price: The regular selling price includes operational expenses and profit. Let's assume the selling price is represented by SP.

3. Operational Expenses: The operational expenses account for 46% of the selling price. So, the operational expenses can be calculated as 0.46 * SP.

4. Profit: The profit margin is 30% of the selling price. Hence, the profit can be calculated as 0.30 * SP.

5. Net Selling Price: The net selling price is the selling price minus the operational expenses and profit. It can be represented as SP - (0.46 * SP + 0.30 * SP).

6. Marked Down Price: The retailer decides to mark down the coats by 20%. Therefore, the marked down price is 80% of the net selling price. It can be calculated as 0.80 * (SP - (0.46 * SP + 0.30 * SP)).

7. Operating Profit or Loss: The operating profit or loss can be obtained by subtracting the cost price from the marked down price. Hence, the operating profit or loss is (0.80 * (SP - (0.46 * SP + 0.30 * SP))) - $67.50.

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Step-by-step explanation:

Application of Formulas in Geometry By textbook tactics

99,096 views•May 25, 2012

This Video should help you solve your equation

Hope it Helps :)

Answer: 5 cookies

Step-by-step explanation:  8 + .4c = 2.5 + 1.5c

8 + 0.4c = 2.5 + 1.5c

8 · 10 + 0.4c · 10 = 2.5 · 10 + 1.5c · 10

80 + 4c = 25 + 15c

4c = 15c - 55

4c - 15c = 15c - 55 - 15c

-11c = -55

c = 5

A sample of college students was asked how much they spent monthly on cost. Approximate the standard deviation for the cost.To calculate the standard deviation for the given data, we first need to calculate the mean and deviations of each data point from the mean.

The given data can be arranged in a table as below. Monthly cost ($) Number of students Deviation from Mean Deviation squared ($) 5 1 -11.2 125.44 14 1 -2.2 4.84 20 1 3.8 14.44 24 1 7.8 60.84 9 1 -7.2 51.84 Total 5 256.4From the above table, the mean of the given data can be calculated as below.

The standard deviation for the given data is approximately 8.01.Most statistical analyses of survey data requires the analyst to explore and understand patterns and trends in the data. One of the most important measures of dispersion is the standard deviation. In the above question, a sample of college students was asked how much they spent monthly on cost and the question asks us to approximate the standard deviation for the cost. By calculating the mean, deviation and deviation squared for each data point and using the formula for calculating standard deviation, we can approximate the standard deviation for the given data to be 8.01.

In statistics, standard deviation is one of the most essential concepts that helps in determining how much data deviates from the mean. In other words, it shows the extent of variation or deviation of values from the mean. The standard deviation is the square root of the variance. It is measured in the same units as the data values and is used to represent the average degree to which each data value varies from the mean.

A sample of college students was asked how much they spent monthly on cost. The given data can be arranged in a table to calculate the mean, deviation, and deviation squared for each data point. The mean can be calculated as the sum of all the observations divided by the total number of observations. Deviation is the difference between each observation and the mean. Deviation squared is obtained by squaring the deviation for each observation. The standard deviation can be calculated using the formula, standard deviation is the square root of the average of the squared deviations. In the above question, the standard deviation for the given data is approximately 8.01.

The standard deviation is an important concept in statistics that measures how much the data deviates from the mean. In this question, the given data shows how much college students spend monthly on cost. The standard deviation can be calculated using the formula, and it is an important tool in analyzing data as it gives an idea of how widely the data is spread out. From the calculations above, we can approximate that the standard deviation for the given data is approximately 8.01.

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Answer:

Step-by-step explanation:

All given numbers have digit 2 at the unit place, only one of them = 262 has digit 6 which is at the tenth place

The answer is none

(a) A scatter plot of the data is shown below.

(b) A quadratic model for the data is y = 5.58x² - 85.53x + 601.96.

(c) Yes, the quadratic model is a good fit for the data.

(d) An estimate of the amounts budgeted for the years 2005 and 2010 are $575 billion and $1123 billion respectively.

(e) Yes, I believe the model is useful for predicting the national defense budgets for years beyond 2004.

In this exercise, we would plot the years on the x-axis of a scatter plot while the defense budget would be plotted on the y-axis of the scatter plot through the use of Microsoft Excel.

Part b.

On the Microsoft Excel worksheet, you should right click on any data point on the scatter plot, select format trend line, and then tick the box to display a quadratic model of the line of best fit (trend line) on the scatter plot;

y = 5.58x² - 85.53x + 601.96

Part c.

Based on the equation of the line of best fit and the trend line above, we can reasonably infer and logically deduce that the quadratic model a good fit for the data.

Part d.

Based on the equation of the line of best fit above, the amounts budgeted for the year 2005 is given by:

Years, x = 1998 to 2005 = 15 years.

y = 5.58(15)² - 85.53(15) + 601.96

y = 574.51 ≈ $575 billion

Years, x = 1998 to 2010 = 20 years.

y = 5.58(20)² - 85.53(20) + 601.96

y = 1123.36 ≈ $1123 billion

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

========================================================

Work Shown

The two points are [tex](x_1,y_1,z_1) = (0,0,0)[/tex] and [tex](x_2,y_2,z_2) = (3,6,8)[/tex]

Use the 3D version of the distance formula to get the following:

[tex]d = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2}\\\\d = \sqrt{(0-3)^2+(0-6)^2+(0-8)^2}\\\\d = \sqrt{(-3)^2+(-6)^2+(-8)^2}\\\\d = \sqrt{9+36+64}\\\\d = \sqrt{109}\\\\d \approx 10.4403065\\\\d \approx 10.44\\\\[/tex]

You'll need your calculator for the second to last step.

Answer:

5 TD  1 FG

Step-by-step explanation:

Answer:

5 Touchdowns 3 Field goals

But this could also another way with 5 Touchdowns and 1 Field goal because 7x5+3 = 38

Step-by-step explanation:

7+7+7+7+7+3 = 38

Or

7x5+3 = 38

This could go so many ways

Answer: Let's assume the cost of 1 kilogram of bananas is represented by 'x'.

According to the given information, 4.5 kg of bananas and 3.5 kg of apples together cost £6.75. We also know that the cost of 1 kg of apples is £5.40.

Using this information, we can set up the following equation:

4.5x + 3.5(£5.40) = £6.75

Now let's solve for 'x':

4.5x + 3.5(£5.40) = £6.75

4.5x + £18.90 = £6.75

4.5x = £6.75 - £18.90

4.5x = -£12.15

x = (-£12.15) / 4.5

x ≈ -£2.70

The cost of 1 kilogram of bananas, based on this calculation, is approximately -£2.70. However, it's important to note that a negative cost doesn't make sense in this context. It's possible there may be an error in the given information or the setup of the equation.

Answer: Irrational

Step-by-step explanation: 3.14 is π. (You can write it as a fraction of two integers: 314100 so it is irraitonal. π (3.14) cannot be written as a fraction of two integers.

Answer:

Step-by-step explanation:

Parallel line has same slope with the given, so the line is

Using the given point, finding the value of b

The equation is

The function f(x) = 2x + 5 can be rewritten in the form g(x) = (a)/(x - h) + k as:g(x) = 2/(x - (k - 5)/2) + kThe graph of g is a translation 2 units upwards and (k - 5)/2 units in the x-direction.

The given function is f(x) = 2x + 5. It is required to rewrite the function in the form g(x) = (a)/(x - h) + k, where the graph of g is a translation a units in the x-direction and b units in the y-direction.

Let's begin by rewriting the given function in the required form.g(x) = (a)/(x - h) + kLet's assume a point (h, k) lies on the graph of the function g(x).Then, g(h) = (a)/(h - h) + k= a + k

This implies that the point (h, k) lies on the graph of g(x) and is at a distance of 'a' units from the x-axis as g(h) gives the value of the y-coordinate of the point.

Thus, 'a' is the required translation in the y-direction.Next, to find the value of 'h', substitute x = h in the equation g(x).

Then,g(h) = (a)/(h - h) + k= a + kSince the point (h, k) lies on the graph of g(x), it also lies on the graph of f(x).

Thus,f(h) = 2h + 5Since the graph of g(x) is a translation 'a' units upwards from the graph of f(x), it can be concluded that f(h) = g(h) - a.Substituting the values of f(h) and g(h), we get2h + 5 = a + k - a= kHence, h = (k - 5)/2

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Answer:

I believe the best answer is 0.45

Answer:

Option 3: 0.45

Step-by-step explanation:

A) In this situation, the number of trials, p, and the probability of success cannot be established.

B) No, it is not a binomial experiment.

A) A meteorologist in Denver recorded Y = the number of days of rain during a 30-day period.

Y does not have a binomial distribution.

For a distribution to be binomial, the following four conditions must be met:

There must be a fixed number of trials; the trials must be independent of one another;

the probability of success (p) must be constant for each trial;

and the probability of success (p) must be identical for each trial.

B) A market research firm has hired operators who conduct telephone surveys.

A computer is used to randomly dial a telephone number, and the operator asks the answering person whether she has time to answer some questions.

Let Y = the number of calls made until the first person replies that she is willing to answer the questions.

No, it is not a binomial experiment. In this scenario, the number of trials is unknown since the researchers do not know how many times they must call before obtaining a response.

The number of trials in a binomial experiment is constant and predetermined. Furthermore, each trial's probability of success is unknown since the respondent's willingness to participate cannot be estimated with certainty.

Finally, the trials are not independent since the results of each trial influence the next, and the probability of success changes with each attempt, making it unsuitable for a binomial distribution.

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Answer:

2:22, 3:33, 4:44, 5:55

Step-by-step explanation:

11:1 * 2= 2:22

I hope this helps! :D

Answer:

250 boys attended the conference.

Step-by-step explanation:

First, divide 750 by 3 (one-third of the conference is boys) and you will get 250 (number of boys). If you wanted to find the number of girls too, you would simply double 250 to get 500 girls.

Answer:

-18a-23

Step-by-step explanation:

-(3a+2)-3(5a+7) -- (multiply out the brackets)

-3a-2-15a-21 -- (collect like terms) (-3a-15a=-18a) and (-2-21=-23)

-18a-23

Answer:

- 18a - 23

Step-by-step explanation:

When there is a “-” in front of an expression in parentheses, change the sign of each term of the expression

- ( 3a + 2 ) - 3 ( 5a + 7 )

- 3a - 2 -3 ( 5a + 7 )

Multiply each term in the parentheses by - 3

- 3 ( 5a + 7 )

- 3 × 5a - 3 × 7

Calculate the product

- 3 × 5a - 3 × 7

- 15a - 3 × 7

Multiply the numbers

- 3 × 5a - 3 × 7

- 15a - 21

Collect like terms by calculating the sum or difference of their coefficients

- 3a - 15a

( - 3 - 15 )a

Calculate the difference

( - 3 - 15 )a

- 18a

Factor out the negative sign from the expression

- 2 - 21

- ( 2 + 21 )

Add the numbers

- ( 2 + 21 )

- 23

Answer

- 18a - 23