Answer:21/2
Step-by-step explanation: first you subtract 3x from both sides ending up with 2x on the left side. 2x-2= 9+10. You’ll then combine like terms adding 9 and 10 having 2x-2=19 You then add 2 to both sides. 2x=21 then dived by 2 on both sides. It won’t simplify so the answer is x=21/2
Answer:
8.

11.

Step-by-step explanation:
Area = 
r = d/2
= 3.14
8.
r = 10/2
r = 5 in
Area = 
Area =

10.
r = 6/2
r = 3 m
Area =
Area =

Hope it helps! (:
ab + a + 4b+4 = a(b+1) + 4(b+1) = (b +1)(a + 4)
Answer: x=3
Explanation: just did it :) plz name me brainliest :)))