Mathematics Middle School

## Answers

**Answer 1**

So

x=hours

y=pay

use a piecewise function maybe

for x≤40, use y=21x

for x>40, use 840+1.5(21(x-40))

k, sso 46>40 so

840+1.5(21(46-40))

840+1.5(21(6))

840+1.5(126)

840+189

1029

A. 840+1.5(21(x-40))

B. $1029

## Related Questions

Wendy needs to purchase 25 vases, which cost $3 each, and flowers for the vases, which cost $2 each. She has $275 to spend on her vases and flowers. Which of the following inequalities would show the maximum number of flowers, x, Wendy can buy without spending more than $275? A. $2x + $75 < $275

B. $2x + $75 > $275

C. x + $25 > $275

D. x + $25 < $275

Show all work!

### Answers

The answer is A.

The cost of 25 vases would be $75 (25*3). then x would be the number of flowers she can buy at $2 each before she goes over $275. So, $2x+$75 < $275

At the grocery store watermelon costs $1.27 per pound. If Heather buys a 5.5 lb watermelon, which proportion could she use to find out how much it will cost, c?

### Answers

The answer is 6.10 dollars

Answer:

1.27/c = 1/5.5

Step-by-step explanation:

Wendy needs to purchase 25 vases, which cost $3 each, and flowers for the vases, which cost $2 each. She has $275 to spend on her vases and flowers. Which of the following inequalities would show the maximum number of flowers, x, Wendy can buy without spending more than $275? A. $2x + $75 < $275

B. $2x + $75 > $275

C. x + $25 > $275

D. x + $25 < $275

### Answers

The correct answer is A. $2x + $75 < $275

The answer would be A,$2x + $75 < $275.

HOPE THIS HELPS! ^_^

10/11 in simplest form

### Answers

Which of the following numbers can be expressed as a decimal that terminates? 9 over 7, 5 over 3, 3 over 2, 6 over 4

3 over 2 and 6 over 4

9 over 7 and 5 over 3

5 over 3 and 3 over 2

9 over 7 and 6 over 4

### Answers

9 over 7 and 5 over 3

9/7 and 5/3 so it would be the second one

It costs $35 per hour to rent a boat at the lake. You also need to pay a $25 fee for safety equipment. You have $200. For how long can you rent the boat?

### Answers

$25 + $35x = $200

$35x = $175 (subtracted the 25)

x = 5 hours (divided the 35)

So you could rent the boat for 5 hours.

What is the solution set? 3.3x - 11.6 > 18.1 Enter your answer in the box. PLEASE HELP!

### Answers

Hi

3.3x - 11.6 > 18.1

3.3x > 18.1 + 11.6

3.3x > 29.7

Divide both sides by 3.3

3.3x/3.3 > 29.7/3.3

x > 9

Good luck !

You play video games online. When you sign up with the game site, you get 200 points. You earn 20 more points for each hour that you play. How many hours do you have to play to get to 500 points?

### Answers

Hey there! The answer is 30 hours!

Work: 500 - 200 = 300

15 x 20 = 300

200 + 300 = 500

For five days Vicki recorded the temperature outside. The temperature (°F) was 36.9°, 34.6°, 37°, 40.2°, 32.8°. About what was the average daily temperature?

### Answers

36.9+34.6+37+40.2+32.8=181.5

181.5/5=36.3

The average daily temperature was 36.3°F

(Which is pretty low, are you sure it was Fahrenheit and not Celsius?)

Take all the temperaturesand add them together then divide that by five and you get 36.3

So the answer is 36.3

A stained glass window is shaped like a semicircle. The bottom edge of the window is 36 inches long. What is the area of the stained glass window? Round your answer to the nearest hundreth.

### Answers

A semi circle is half of a circle, and since a circle is (pi)r^2, it would be 1/2 (pi) r^2. Since the radius is half the diameter, we would turn the 36 inches into 18 inches. So 18in is your radius. Plug it in and you've got it. :)

Which of the following numbers is irrational? a fraction with numerator negative 9 and denominator 5, a fraction with numerator square root of 5, a fraction with numerator 7 and denominator 3, square root of 9

a fraction with numerator negative 9 and denominator 5

square root of 5

a fraction with numerator 7 and denominator 3

square root of 9

### Answers

Square root of 5 because it gives no real solution.

Answer:

Square root of 5 because it gives no real solution.

Step-by-step explanation:

The volume of a cube is 400 m3. Which statements are true about the same cube measured in cubic centimeters? Choose all answers that are correct. A. The number representing the volume would decrease. B. The number representing the volume would increase. C. The actual volume would decrease. D. The actual volume would increase. E. The actual volume would stay the same. multiple answer choice

### Answers

The correct answers would be B) and E)

A standard showerhead in Reyna's house dispenses 9 gallons of water per minute. Reyna changed this showerhead to an energy-saving one. The equation shows the amount of water dispensed, y, as a function of the number of minutes, x, for the new showerhead. y = 3x

How much water does Reyna save each day with the change in showerheads if she uses the shower for 8 minutes each day?

14 gallons

48 gallons

69 gallons

96 gallons

### Answers

48 gallons... since the first shower head gives 9 gallons per minute you multiply 9 by 8 then you use the equation and multiply 3 by 8 then you subtract the two shower heads

Answer:

The correct answer is 48....

Step-by-step explanation:

When I first read this question, I thought it was asking me to do all this crazy stuff with 9, until I reread it and realized what it was really asking...

- Multiply 3 x 8

- 24 isn't our answer, but if we continue to work our way up our inputs... 16 being our next input.

16 is our next input, because 8 + 8 = 16!!

Total of 2 yards is used to make 5 pillows. How much fabric is used for each pillow

### Answers

I think it would be 0.4

)Where is the number 4 − 8 located on a horizontal number line? 4 units to the left of 4

4 units to the right of 4

8 units to the left of 4

8 units to the right of 4

### Answers

4 units to the right of four

B) 4 units to the right of 4

The electromagnetic waves with the shortest wavelengths and the highest frequencies are called

### Answers

Radio waves I believe

Which waves have some electrical properties and some magnetic properties

### Answers

Electromagnetic (EM) waves

1....1/4 y + 1 1/2 + 2-1 3/4 y -12

2....5=1/5x-3

3....1/2 h + 1 from 3/4 h +4

### Answers

1) (-1 1/2)(y)-8 1/2

2) x=40

Half of 1/3 pan of brownies = __ pan of brownies

### Answers

Half of 1/3 of brownies is 1/6 you just multiply 1/3 by 1/2

Hope this helped ! :)

Which of the following demonstrates the Commutative Property of Multiplication? A 3(4a − 2) = 12a − 6

B 3(4a − 2) = (4a − 2) ⋅ 3

C 12a − 6 = (4a − 2) ⋅ 3

D (3 ⋅ 4a) − 2 = 3(4a − 2)

### Answers

The answer here is, 3(4a - 2) = (4a - 2) • 3