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OpenStudy (anonymous):
The length of a rectangle is 2 inches less than three times its width, and its perimeter is 36 inches. Find the width of the rectangle.
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OpenStudy (bahrom7893):
woops sorry wrong it's actually: L = 3W - 2 P = 2 ( L+W )
OpenStudy (bahrom7893):
Now plug in for L P = 2 ( 3W - 2 + W ) = 36
OpenStudy (bahrom7893):
2 ( 4W - 2 ) = 36 8W - 4 = 36 8W = 36 + 4 8W = 40 W = 5
OpenStudy (bahrom7893):
L = 3W - 2 L = 3*5 - 2 L = 15-2 L = 13
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