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A = 30

Step-by-step explanation:

it's a 30,60,90 triangle by the sides but to prove it:

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cos A = 3√2/2√6 = 4.24/4.899 = .865

A = 30°

is should be y = 5x

step-by-step explanation:

correct me if im wrong

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°