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the side of a square is 9 x and its perimeter is 36 in

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2 Answers

First write down what you know
1) a perimeter is the sum of the length of all sides
2) a square has 4 sides
3) All sides in a square are equal so.....
we can write that 36= 4 * (9x)
4*9x= 36x
36x=36
x=1

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