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3 years ago

Need help 8th grade math

Mathematics

2 answers:

SIZIF [17.4K]3 years ago

7 0

Answer:

60°

Step-by-step explanation:

outside angle = two opposite inside angles

10x - 45° = 4x + 3x

3x = 45°

x = 15°

m∠B = 4x

m∠B = 4(15°)

m∠B = 60°

garik1379 [7]3 years ago

5 0

The answer is 60 measures

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