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iris [78.8K]
3 years ago
5

3. The 7th grade students took a survey about which pizza company the students

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

40 students choose Papa John's, and 24 did not

Step-by-step explanation:

This question can be solved by proportions, using rule of three.

For each 8 students, 5 chose Papa John's. Out of 64, how many choose?

5 - 8

x - 64

Applying cross multiplication

8x = 5*64

Simplifying by 8

x = 5*8 = 40

40 students choose Papa John's.

In all, there are 64 students, so 64 - 40 = 24 did not

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A three-dimensional model of Arthur's apartment is
Ilya [14]

Answer: The volume of the apartment is 2,160 ft3.

An hourly rating of 2.5 BTUs per cubic foot is required, so multiply the total volume by 2.5.

Arthur needs an air conditioner that will provide 5,400 BTUs to properly cool his apartment

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
(5-21)-(3 + 1) = <br> simplify involving i
ArbitrLikvidat [17]

Answer:

-20

Step-by-step explanation:

Do the math in the parenthesis first

(5-21) = -16

(3+1) = 4

Rewrite the problem

- 16 - 4= -20

The answer is -20

3 0
2 years ago
a paintball Court charges an initial entrance fee plus a fixed price for ball pease represents the total price n dollars as func
Evgen [1.6K]

The complete question is;

A paintball court charges an initial entrance fee plus a fixed price per ball.

P represents the total price (in dollars) as a function of the number of balls used n.

P = 0.80n + 5.50

How much do 10 balls cost?

Answer:

Cost of 10 balls = 8 dollars

Step-by-step explanation:

We are told that;

total price in dollars is given as a function of the number of balls

p = 0.8n + 5.5

Where n is number of balls.

We are told that the price above is price of number of balls plus entrance fee.

Thus, 5.5 dollars is the entrance fee while 0.8n dollars is the price for n number of balls.

Thus,for 10 balls,

Price of 10 balls will be 0.8 x 10 = 8 dollars

8 0
3 years ago
camelbeck mountain has an elevation change of 1,264 feet. how many pennies would it take to make a stack that high? show all wor
mixer [17]
Camel back Mountain = 15,168 inches (1,264 feet)
1 Penny = 0.061 (.0610) Inches
10 Penny = 0.61 (.610) Inches
100 Penny = 6.1 (6.10) Inches
1,000 Penny = 61 (61.0) Inches
10,000 Penny = 610 (610.0) Inches
-SOLVING-
10,000 Penny = 610 inches PLUS
1,000 Penny = 61 inches AND 61 inches x 5 = 305 (5,000 Penny)
100 Penny = 6.1 inches PLUS
10 Penny = 0.61 inches AND 0.61 inches x 6 = 3.66 (60 Penny)
1 Penny = 0.061 inches AND 0.061 inches x 8 = 0.488 (8 Penny)
-FINAL ANSWER-
610 + 305 + 6.1 + 3.66 + 0.488 = 925.248 Penny it would take.
8 0
2 years ago
Afteer visiting Washington, D.C., Joey Green wanted to make a scale model of the Washington Monument. The actual
Amanda [17]

Answer:

Step-by-step explanation:

height of monument = 555 feet

Scale in/ft = 1 /25

So, 25 feet = 1 inch

1 feet = 1 /25 inch

555 feet = 555 /25 = 22.2 inch

It means that the height of monument is 22.2 inch on scale. As it is a decimal number so it is not a reasonable scale.

6 0
3 years ago
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