SOLUTION: The width of a rectangle is 4 inches less than half of the length. If the area of the rectangle is 42 square inches, find the dimensions.

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Question 877946: The width of a rectangle is 4 inches less than half of the length. If the area of the rectangle is 42 square inches, find the dimensions.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
w=-4%2B%281%2F2%29L and wL=42.

The first part can be stated, w=L%2F2-4.

%28L%2F2-4%29L=42
L%5E2%2F2-4L=42
L%5E2-8L=84
L%5E2-8L-84=0, factorable?
%28L%2B6%29%28L-14%29=0
Choose highlight%28L=14%29.
w=14%2F2-4=7-4=highlight%283=w%29.