SOLUTION: a triangle has 2 sides that are the same length and a third side that's 10ft less than twice the shorter sides and the perimeter is 90 ft.write an equation and find the length of e

Question 792008: a triangle has 2 sides that are the same length and a third side that's 10ft less than twice the shorter sides and the perimeter is 90 ft.write an equation and find the length of each side.

Answer by waynest(281) (Show Source): You can put this solution on YOUR website!
side 1 and 2 = x
side 3 = 2x - 10
p = s * s * s
90 = x + x + (2x -10)
90 = 4x -10
90 + 10 = 4x -10 + 10
100 = 4x
100/4 = 4x/4
25 = x
check:
90 = 25 + 25 + (2(25) -10)
90 = 50 + 40
90 = 90

RELATED QUESTIONS
the sum of the length of any two sides of a triangle must be greater than the third side. (answered by edjones)

If a triangle has a side that is 7 in and the second side that is 2 inches less than... (answered by AnlytcPhil)

Two sides of a triangle have the same length. The third side measures 2m less than twice... (answered by josgarithmetic)

A right triangle has sides of length such that the hypotenuse is 3 inches less than twice (answered by ewatrrr)

The sum of the lengths of any two sides of a triangle must be greater than the third... (answered by rapture,ikleyn)

The sum of the lengths of any two sides of a triangle must be greater than the third... (answered by josgarithmetic)

The sum of the lengths of any two sides of a triangle must be greater than the third... (answered by MathLover1)

Two sides of a triangle have the same length. The third side measures 2 m less than twice (answered by MathLover1,josmiceli)

The sum of the lengths of any two sides of a triangle must be greater than the third... (answered by ankor@dixie-net.com)