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Brilliant_brown [7]
3 years ago
15

Pls help me answer this question and plsss do not send link

Mathematics
1 answer:
Sever21 [200]3 years ago
3 0

Answer:

x=124.75

Step-by-step explanation:

Sum of angles of a triangle=180°

(x-40)+(x-20)+(1/2- 10)=180°

(x-40)+(x-20)+(−9.5)=180°

x-40+x-20−9.5=180°

x+x-40-20-9.5=180°

2x−69.5=180°

2x=180°+69.5

2x=249.5

2x/2=249.5/2

x=124.75

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<h3>What is called a triangle?</h3>
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