Answer:
the correct answer is 8.7
Step-by-step explanation:
Add all the books then find the average
It's an easy problems. what equations are you trying to find?
Answer:
11
Step-by-step explanation:
<u><em>SUBTRACT</em></u>
Answer:
Step-by-step explanation:
R = 9x + 8y
4 = 9x + 8*8
4 = 9x + 64
Subtract 64 from both sides
4 - 64 = 9x + 64 - 64
-60 = 9x
Divide both sides by 9
-60/9 = 9x/9
-20/3 = x
x = -6 2/3