The following angles are supplementary to each other. mzA= (3x + 21)° and mzB = (6x - 21)° Determine x. A10 B20 C36 D60

asked Jan 23, 2023 18.6k views

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The following angles are supplementary to each other.

mzA= (3x + 21)° and mzB = (6x - 21)°
Determine x.
A10
B20
C36
D60

by Cnnr

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2 votes

Answer: 20

Step-by-step explanation: I can help with am explanation if you dm me:)

LCoelho answered Jan 24, 2023

2.8k points

4 votes

3x+21+6x-21=180
9x=180
x=20

So the answer is B (20)

Chapman answered Jan 29, 2023

4.0k points

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