Question

If AB = 2x–8 and AC = x+9, What is the length of BC?

Answer 1

17

Explanation:

2x-8=x+9

x=17

Answer 2

BC=17 units

EXPLANATION

The given triangle is an isosceles triangle.

We have

AC=AB

This implies that,

`x + 9 = 2x - 8`

Group similar terms and simplify to get:

`2x - x = 9 + 8`

`x = 17`

Side BC is x units. But x=17

Therefore BC is 17 units.