Question

9.2.RE-2

The length of the base of an isosceles triangle is x. The length of a leg is 3xminus2. The perimeter of the triangle is 52. Find x

Answer 1

The two sides of an isosceles triangle are the same length. Add the three sides together to equal 52:

X + 3x-2 + 3x-2 = 52

Simplify the left side by combining like terms:

7x - 4 = 52

Add 4 to both sides:

7x = 56

Divide both sides by 7:

X = 56/7

X = 8