Homework Help: 8th grade algebra

Posted by val on Thursday, February 11, 2010 at 11:17pm.

the length of a rectangular garden is 5 feet longer than its width. The garden is surrounded by a 2-foot-wide-sidewalk. The sidewalk has an area of 76 square feet. Find the dimensions of the garden

8th grade algebra - Reiny, Thursday, February 11, 2010 at 11:55pm
Let the width of the garden be x ft
then the length is x+5 ft.

area = x(x+5)

width of garden with sidewalk = x+4
length of garden with sidewalk = x+9

(x+4)(x+9) - x(x+5) = 76
solve, the x^2 will drop out

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