Determine the value of x
Help will give brainliest

Step-by-step explanation:

=

5x = 3(x + 10)

2x = 30

x = 15

answer: it's upside down and i can't read it

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°