one side of a triangle is one-third the longest side. the third side is 11 ft less than the longest side. the perimeter is 73. f
ind all 3 sides
1 answer:
side 1 = x
side 2 = x-11
side 3 = 1/3x
x + x-11 + 1/3x = 73
2x-11 + 1/3x = 73
2x = 6/3x
6/3x+1/3x = 7/3x
7/3x-11 = 73
7/3x = 84
7x =84*3
7x = 252
x = 252/7
x = 36
longest side = 36
2nd side = 1/3(36) = 12
3rd side = 36-11 = 25
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