Workout the value of: xy - y when x = 5 and y = -4

the answer is b i just did that

step-by-step explanation:

answer: i realy don't get it that much can you me figer it out pleas you

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°