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Anettt [7]
3 years ago
7

The length of a rectangle is one inch less than three times its width. If the perimeter of the rectangle is 54 inches, find the

length
Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0

w - width

3w - 1 - length

54 in - perimeter

w + w + (3w - 1) + (3w - 1) = 8w - 2 - perimeter

The equation:

8w - 2 = 54      <em>add 2 to both sides</em>

8w = 56     <em>divide both sides by 8</em>

w = 7

3w - 1 = 3(7) - 1 = 21 - 1 = 20

<h3>Answer: The length = 20 in.</h3>
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