Posted by Kym on Friday, December 17, 2010 at 9:48am.
Yse the Pythagorean theorem to show that the hypotenuse is
5x = 75
x = 15.
Take it from there
Pythagorean theorem
(leg)^2 + (leg)^2= (hypoyenuse)^2
(3x)^2 + (4x)^2 =(75)^2
9x^2 +16x^2 = 5625
25x^2=5625 ]:25
x^2=225
x=15
so, first leg is 3*15=45
second leg is 4*15=60.
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