Question

FAN & MEDAL
QUESTION IN COMMENTS

Answer 1

isosceles triangles have 2 equal sides in length

Answer 2

I can help you with that. :D
Since the 2 sides of the triangle are equal, you will set the equations as follows:

x+17=2x-6

First, you add 6 to both sides. You get:

x+23=2x

Now, you subtract x from both sides to get:

x=23

The question asks for the length of BC, which is 2x-6. You plug in x and get:

2(23)-6= 46-6 =40

The length of BC is 40. If you need more help, please let me know. :)