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Neporo4naja [7]
3 years ago
15

I need help with this question.

Mathematics
2 answers:
ahrayia [7]3 years ago
8 0

Answer:

59

Step-by-step explanation:

We know that all the angles must add up to 180

so we have

38+2b-20+b-15=180

solve for b

3b+3=180

3b=177

b=59

Snowcat [4.5K]3 years ago
4 0

Answer:

b=59

Step-by-step explanation:

angles in the triangle add up to 180

this would mean that

38 +2b-20 + b-15 = 180

if we simplify this then it would be

3+3b= 180

rearrange

3b = 177

b = 59

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Nikitich [7]

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