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Flura [38]
3 years ago
6

The length of a rectangle is three times its width.

Mathematics
1 answer:
lilavasa [31]3 years ago
5 0

Answer:

I think the answer is 40.

Step-by-step explanation:

Since the length is three times its width, the width is 5 and the length is 15, since you find the area by doing length * width you get 75. You get perimeter by adding all the sides which is, 5+5+15+15= 40.  

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Can you help me on this?
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Answer:

y = 30

Step-by-step explanation:

We can use ratio's to solve this

40        20

-----  = -----------

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Using cross products

40 * (20+y) = 20*100

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Divide by 40

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y =30

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Step-by-step explanation:

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

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