F a storm window has an area of 400 square inches, what are the dimensions if the window is 12 inches wider than it is high (w x h) ?

Question

Nero

Mathematics

31 October, 19:49

F a storm window has an area of 400 square inches, what are the dimensions if the window is 12 inches wider than it is high (w x h) ?

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Answers (2)

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Dominique Kent · Answer 1

A=xy and we are told y=12+x so

A=12x+x^2 and A=400 so

x^2+12x=400

x^2+12x-400=0

x = (-12±√1744) / 2

x≈14.88

So the dimensions are approximately 14.88" by 26.88"

Michael · Answer 2

Well if the window is 40 x 10 the L is 52 and the w 22