SOLUTION: 9. A picture frame has thickness x, and the dimensions of the unframed picture are 18in x 24in. If the area of the picture and frame together is 720 square inches, find the thickn
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Question 945726: 9. A picture frame has thickness x, and the dimensions of the unframed picture are 18in x 24in. If the area of the picture and frame together is 720 square inches, find the thickness of the frame.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The area of the picture plus the frame is:
in2
Use quadratic equation
The frame is 6 in wide
check:
OK
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