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OpenStudy (anonymous):
the width of a rectangle is 7 cm shorter than its length and its area is 228 sq. cm. Find then dimensions of the rectangle?
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OpenStudy (anonymous):
w = l - 7 lw = 228 w = 228/l 228 = l^2 - 7l l^2 - 7l + 228 = 0 solve for l, and then use that to find w
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