Round 18 to the nearest 10

To round 18 to the nearest 10, we look at the 8 and see if it's greater than, less to or equal to 5.

In the number, 18, 8 is greater than 5.

8 > 5

So we round up.

Therefore, your answer is 20.

50-38=12

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°