Evaluate expression 1/2a-5b when a= -12 and b= -3

9

Step-by-step explanation:

1/2 * -12= -6

5*-3= -15

-15- (-6)=  -9

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

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