SOLUTION: The length of the base of an isosceles triangle is x. The length of a leg is 2x-5. The perimeter of the triangle is 20. Find x.

Algebra ->  Triangles -> SOLUTION: The length of the base of an isosceles triangle is x. The length of a leg is 2x-5. The perimeter of the triangle is 20. Find x.      Log On


   

Question 665082: The length of the base of an isosceles triangle is x. The length of a leg is 2x-5. The perimeter of the triangle is 20. Find x.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

 

Hi,

The length of the base of an isosceles triangle is x. 

The length of a leg is 2x-5. (other leg the same length)

Question states*** perimeter of the triangle is 20

 x + (2x-5) + (2x-5) = 20

     5x - 10 = 20

       5x = 30

        x = 6, the length of th ebase.  The length of each leg is 7