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PLS HELP. 20 PTS.

Assume ∠J is a supplement of ∠K. If the measure of ∠J = 2x and ∠K = 10x + 12. What is the measure of ∠K?

A. 76°
B. 28°
C. 152°
D. 14°

Respuesta :

180°=2x+10x+12
180=12x+12
168=12x
x=14

angle J=2x
J=2(14)
J=24

angle K=10x+12
K=10(14)+12
K=140+12
K=152
therefore, answer is C.

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