SOLUTION: one side of a rectangle is 4 in shorter than three times the other side find the sides if the area of the rectangle is 319sq in
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Question 958978: one side of a rectangle is 4 in shorter than three times the other side find the sides if the area of the rectangle is 319sq in Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! one side of a rectangle is 4 in shorter than three times the other side find the sides if the area of the rectangle is 319sq in
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side:: x
other side: y
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Equation:
y = 3x-4
xy = 319
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Substitute and solve for "x"::
(3x-4)x = 319
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3x^2 - 4x - 319 = 0
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x = [4 +- sqrt(16 -4*3*-319)]/6
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x = [4 +- 62]/6
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x = 11
y = 3x-4 = 29
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Cheers,
Stan H.
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