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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

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

asked
User Cnnr
by
7.4k points

2 Answers

2 votes

Answer: 20

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

answered
User LCoelho
by
6.9k points
4 votes
3x+21+6x-21=180
9x=180
x=20

So the answer is B (20)
answered
User Chapman
by
8.6k points
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