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Mathematics 8 Online
OpenStudy (anonymous):

The length of a rectangle is 4 times it's width. The area if the rectangle is 144 square inches. Find the dimensions of the rectangle

OpenStudy (freckles):

First sentence says: L=4W Second sentence says: 144=LW

OpenStudy (freckles):

Replace L in the second equation with 4W then solve the second equation for W

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