4 years ago

QUIZ:

Mathematics

1 answer:

Bogdan [553]4 years ago

3 0

Answer:

$BC=24\ units$

Step-by-step explanation:

<u><em>The picture of the question in the attached figure</em></u>

we know that

An isosceles triangle has two equal sides and two equal interior angles

In this problem

Triangle ABC is an isosceles triangle

because

m∠B=m∠C

therefore

AC=AB

substitute the given values

$x+8=2x-1$

solve for x

$2x-x=8+1\\x=9$

Find the length of side BC

$BC=3x-3$

substitute the value of x

$BC=3(9)-3=24\ units$

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