What part of an hour is 20 minutes?

There are 60 minutes in an hour. It takes us 3 20s to reach 60 (20, 40, 60), so one 20-minute period would be 1/3 of an hour.

you have 6 cupcakes

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°