Question

What is the length of side BC of the triangle? Explain how you arrived at your answer.

Answer 1

`BC = 28`

Explanation:

By the image, `AC = AB`, meaning `2x+7 = 4x-7`. Solving for `x`, we get

`2x+7 = 4x-7`

`=> 2x = 14`

`=> x = 7`

Thus `BC = 4x = 4(7) = 28`