Simplify the expression 5a – 2b – 3 + 2b – 6a
A. –4
B. 2a – 4b
C. –a – 3
D. a – 3

C. -a-3

Step-by-step explanation:

Group like terms:

5a and -6a

-2b and +2b

-3

5a - 6a equals -a (-1a, but you don't write the 1)

-2b and + 2b = 0

Now you have -a and -3.

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°

false

step-by-step explanation:

false : it can not go to 9 the highest that part can go is 7

here is your proof