Des H.
asked • 04/21/18algebraic expression
A square plywood platform has a perimeter which is 7 times the length of a side, decreased by 18. Find the length of a side.
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1 Expert Answer
Let s=side and p=perimeter.
p = 4s
p = 7s - 18
4s = 7s - 18
-3s = -18
s = 6
The length of a side is 6.
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Mark M.
04/21/18