< B is:A) 30°B) 45°C) 50°D) 60°
2 answers:
Answer:
m∠B = 50º
Step-by-step explanation:
B = 180 - (2x + 40) = 180 - 2x - 40 = -2x + 140
C = 180 - (3x - 45) = 180 - 3x + 45 = -3x + 225
From the Exterior Angle Theorem
B + C = 140
-2x + 140 - 3x + 225 = 140
-5x + 365 = 140
-5x = -225
x = 45
-------------------
B = -2x + 140
B = -2(45) + 140
B = -90 + 140
B = 50º
Answer:
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Answer:
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Is this what you meant? Figures as in numbers?
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Step-by-step explanation:
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