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What is the value of x ? In ∆ABC, m∠A=(3x + 7)°, m∠B = (2x − 8)°, and m∠C=(5 − x)° A.29 B.40 C.46 D.44

What is the value of x ? In ∆ABC, m∠A=(3x + 7)°, m∠B = (2x − 8)°, and m∠C=(5 − x)° A.29 B.40 C.46 D.44
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3 votes
What is the value of x ?

In ∆ABC, m∠A=(3x + 7)°, m∠B = (2x − 8)°, and m∠C=(5 − x)°

A.29
B.40
C.46
D.44

asked
User Bvgheluwe
by
7.8k points

1 Answer

6 votes
so,

1) 3x+7+2x-8+5-x=180
2) 4x+4=180
3) 4x=176
4) x=44

Answer is D
answered
User Uladzislau Vavilau
by
9.5k points
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