Mathematical symbol that states as a unknown value to find ( a variable)

X or y.

Step-by-step explanation:

X and y are probably most used variables. I don't really understand the question, but I hope this helps. Have a good night

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°

21

jk it's 20

step-by-step explanation: