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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Casper Nybroe asked Aug 14, 2023

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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

Mathematics
college

Casper Nybroe asked Aug 14, 2023

by Casper Nybroe

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20 votes

Answer: 20

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Martin Samson answered Aug 16, 2023

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16 votes

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

So the answer is B (20)

Boris Treukhov answered Aug 20, 2023

by Boris Treukhov

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