Homework Help: math

Posted by CB on Tuesday, May 25, 2010 at 7:10pm.

The length of a rectangle is 7 cm more than its width. The area of the rectangle is 120 sq. cm. What is the width of the rectangle?

math - Reiny, Tuesday, May 25, 2010 at 7:16pm
Can you solve ...

x(x+7) = 120 as a quadratic?
math - CB, Tuesday, May 25, 2010 at 7:22pm
Please check
x=8
math - Reiny, Tuesday, May 25, 2010 at 8:10pm
yes,
8(15) = 120

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