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5 votes
Find the value of x.

A.18
B.15
C.16
D.19

PLEASE HELP!!!!!

Find the value of x. A.18 B.15 C.16 D.19 PLEASE HELP!!!!!-example-1

1 Answer

4 votes

Answer:

x = 19

Explanation:

123°+3x = 180°

3x = 180°-123°

3x = 57

x = 57/3

x = 19

The reason why we use 123° + 3x = 180° because both are adjacent angles. Adjacent angles add up to 180°

User Manuel Moser
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