Question

What is BC?

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Answer 1

BC = 25

Explanation:

It's an isosceles triangle (congruent angles ∠C ≅ ∠B).

Therefore AC = AB.

We have the equation:

`4x+1=2x+23` subtract 1 from both sides

`4x=2x+22` subtract 2x from both sides

`2x=22` divide both sides by 2

`x=11`

Substitute the value of x to the expression BC = 3x - 8:

`BC = 3(11) - 8=33-8=25`