In the proof of the Law of Cosines, the equation c ^ 2 = h ^ 2 + (b - x) ^ 2 was created using the Pythagorean theorem. Which equation is a result of expanding (b - x) ^ 2 ?

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: b

step-by-step explanation:

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20

but there’s no any figure there!