SOLUTION: The ratio of the side lengths of a rectangle is 3:7 and the perimeter is 100cm. Find the measures of the side lengths.

Question 823561: The ratio of the side lengths of a rectangle is 3:7 and the perimeter is 100cm. Find the measures of the side lengths.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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x/y = 3/7
2x + 2y = 100
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put the system of linear equations into standard form
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7x = 3y
2x + 2y = 100
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7x - 3y = 0
2x + 2y = 100
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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answer:
x= 15 cm
y= 35 cm
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