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mrs_skeptik [129]
2 years ago
5

PLease help me on 57 - 63

Mathematics
1 answer:
Nuetrik [128]2 years ago
7 0
57-63= -6
(your pictures aren’t loading for me but hopefully that helps)
:)
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The area of one rectangle is twice the area of another. What is the ratio of their perimeters
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Answer:

The answer is 8 units! Hope this helps!

Step-by-step explanation:f the length of any one side of the square is x, then the area is x2, and the perimeter is 4x. If the area is twice the perimeter, x2 = 2(4x), and x2 − 8x= 0. By factoring, we see this equation is equivalent to x(x − 8) = 0, which has solutions 0 and 8. The length cannot be 0, so it must be 8 units.

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Julie is going to the store to buy candles. Small candles cost $2.50 and large candles cost $4.00. She needs to buy a mix of at
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2 years ago
PEMDA is a regular pentagon. which of the statements is correct ​
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3 0
2 years ago
A student charges twenty dollars per hour to type college papers. The student's average typing speed is fifty words per minute.
coldgirl [10]

Answer:

The student should charge $210 for typing the paper ⇒ answer C

Step-by-step explanation:

* Lets explain how to solve the problem

- The rate of the student's typing is 50 words per minute

- The students charges twenty dollars per hour to type the college

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- There is a paper contains 31,500 words

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* At first lets find his rate per hour

∵ 1 hour = 60 minutes

∴ 1 minute = 1/60 hours

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∴ His rate = 50/(1 × 1/60) = 3000 words per hour

* Lets find the time he needs to finish the paper

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∵ Time = The number of words ÷ his rate of typing

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∴ Time = 31,500 ÷ 3000 = 10.5 hours

∴ He needs 10.5 hours to finish the paper

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∵ The time to finish the paper is 10.5 hours

∵ The price of typing the paper = the charge per hour × number

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∴ The price of typing the paper = 20 × 10.5 = 210

∴ The student should charge $210 for typing the paper

7 0
3 years ago
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