(21+4) + (-5+5) -12 =

(-3 -9) / 3 =
(-6 - 10) / (-4)

(21+4) + (-5+5) -12 = 13

(-3 -9) / 3 = -4

(-6 - 10) / (-4) = 4

Step-by-step explanation:

I hope this helps.

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°

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy