Answer:
JUST DOING THIS FOR POINTS
Step-by-step explanation:
LOL
Answer:
Midpoint is 
Step-by-step explanation:
Midpoint = 
= 
= 
= 
Midpoint is (-37/2, 14)
Answer:
For bag C
Step-by-step explanation:
Bag C has more blue marbles than red ones
Answer: 30
Step-by-step explanation:
10 x 3 = 30
It might be wrong but I wanted to try it so don’t you my answer.
In order to do this you have to substitute b with 9 and get 3a+9=54, now subtract 9 from both sides to leave a by itself and get 3a=45, now divide 3 in both sides to leave a by itself and get a=15
Hope this helps