Question

5. Which equation can be used to solve for x in the following diagram?

(3x+12)°
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A. 3x = 180+X
B. (3x+12) + x = 90
C. (3x+12) + x = 180
D. (3x+12) = x

Answer 1

C

Explanation:

the 2 angles form a linear pair and sum to 180° , that is

3x + 12 + x = 180