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Brums [2.3K]
2 years ago
12

Will mark brainliest, please answer correctly!!!

Mathematics
1 answer:
Mariana [72]2 years ago
5 0

Answer:

The length of BC is 17 units

Step-by-step explanation:

we know that

An isosceles triangle has two equal sides and two equal angles

In this problem we have an isosceles triangle

Because

m∠ACB=m∠ABC ----> given problem

so

AC=AB

substitute the given values

x+9=2x-8

solve for x

2x-x=9+8

x=17

therefore

The length of BC is 17 units

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