What is the length of side bc of the triangle? enter your answer in the box. units triangle a b c with horizontal side b c. vertex a lies above side b c. angle b and angle c are marked congruent. the length of side a c is labeled as x plus 8. the length of side a b is labeled as 2 x minus 1. the length of side b c is labeled as 3 x minus 3.

 Length of BC = 24 units.

Explanation:

Given that in triangle ABC, BC is the base, and angle B = angle C

SInce two angles are equal, ABC is isosceles with sides AB = AC

Given that AC = x+8 and AB = 2x-1

Since AB = AC we get these two are equal.  Use this t solve for x.

x+8 = 2x-1

x =9.

It is easy to find BC now.

BC =3x-3

Hence BC =3(9)-3 = 24

Length of BC= 24 units.

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