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alexira [117]
3 years ago
14

If ∠AOB, ∠BOC, and ∠COD are supplementary angles, then what is the value of x and m∠COD?

Mathematics
2 answers:
MArishka [77]3 years ago
7 0

Answer:

B

Step-by-step explanation:

x=180-90-20-50=20

m∠COD=20+50=70

vladimir2022 [97]3 years ago
3 0

Answer:

B

Step-by-step explanation:

∠ AOB + ∠ BOC + ∠ COD = 180° ( AOD is a straight line ) , then

20 + 90 + x + 50 = 180 , that is

x + 160 = 180 ( subtract 160 from both sides )

x = 20

Then

∠ COD = x + 50 = 20 + 50 = 70°

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