Answer:
25 because the 8 values must times with 7 and will get 56. when the ninth value added , let the ninth value as y , 56+y , the new mean is 9 . so it will be like this , 56+y over 9 times with 9
First distribute the 2, then add 7 to that side, so you have 2g+17=-4g+g , subtract 2g and it should be easy to find from there lol
4 out of 10 because the amount of prime numbers from 1- 10 is
2, 3, 5, and 7.
Hope this helps!
Answer:

Step-by-step explanation:
Question: 
1) Subtract 79 from both sides:

2) Add 59p to both sides:

3) Divide both sides by 28:

4) Simplify fraction:

Answer:
-8 just add them together