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irina1246 [14]
3 years ago
12

A rectangle's perimeter is equal to 27 plus its width. The length of the rectangle is four times its width. What is the

Mathematics
1 answer:
lara31 [8.8K]3 years ago
8 0

Answer:

P = 3

Step-by-step explanation:

L = 4*w

P = 27 + w

P = 2*L + 2*w = 27 + w

2L = 2*(4w) = 8w

Put that into the perimeter formula (the first one.)

P = 8w + 2w = 27 + w

10w = 27 + w                        Subtract w from both sides

9w = 27                                Divide by 9

w = 27 / 9                          

w = 3

You should find the Length just so you can check it.

L = 4w

L = 4*3

L = 12

Check

P = 2L + 2w

P = 2*12 + 2*3 = 30

P = 27 + w

P = 27 + 3

P = 30 and everything checks.

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-------------------------------------------------------------------------------------------------------------------


Again, isolate the x.


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hope this helps

3 0
3 years ago
Read 2 more answers
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