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Svetach [21]
3 years ago
6

22. The perimeter of a rectangle is 84 inches and the width is 7 inches.

Mathematics
2 answers:
Natali [406]3 years ago
8 0

Answer:

l = 35 \:  \: inches

Step-by-step explanation:

perimeter \\84  = w + w + l + l \\ 84 = 7 + 7 + 2l \\ 84 = 14 + 2l \\ 84 - 14 = 2l \\ 70 = 2l \\  \frac{70}{2}  =  \frac{2l}{2}  \\ l = 35 \:  \: inches

hope this helps

brainliest appreciated

good luck! have a nice day!

m_a_m_a [10]3 years ago
5 0

Answer:

35 inches

Step-by-step explanation:

The perimeter of a rectangle is given by

P = 2(l+w)

We know the perimeter and the length

84= 2 ( l+7)

Divide each side by 2

84/2 = 2/2 (l+7)

42 = (l+7)

Subtract 7 from each side

42-7 = l+7-7

35 = l

The length is 35 inches

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