I’m thinking of a number. if you multiply it by 6 and then add 7 , you will get 55. what is my number

Let's call the unknown number . Based on the information, we can say:

If we subtract 7 from both sides, we get:

When you divide both sides of the equation by 6, we can isolate :

The number is 8.

s

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°