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Schach [20]
3 years ago
15

What is the measure of angle B in the triangle?

Mathematics
1 answer:
sladkih [1.3K]3 years ago
6 0
40 + 2x - 30 + x + 20 = 180
3x + 30 = 180
3x = 150
  x = 50

m<B = 2x - 30
m<B = 2(50) - 30
m<B = 100 - 30
m<B = 70
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3 years ago
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3 years ago
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