Here are two steps from the derivation of the quadratic formula. 7215
+-+
6
2a
C
+
a
2a
2
(+-
+
b
2a
2a
What took place between the first step and the second step?

goog may have it for you

536

step-by-step explanation:

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°

do your own work and don"t cheat.

step-by-step explanation: