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If you know that the diagonal of the rectangle is 13 feet and the length is 7 feet longer than the width what is the width?
Wiki User
∙ 14y ago
The diagonal can be found by taking length^2+width^2=diagonal^2
13^2=x^2+(x+7)^2
169 = x2 + x2 + 14x + 49
120 = 2x2 + 14x
x2 + 7x - 60 = 0
now just factor, and you have the answer. It's the positive x value.
Wiki User
∙ 14y ago
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