Hello,
If 12 balls were pitched to each of the 9 players at practice, then
12 + 12 + 12 + 12 + 12 + 12 + 12 + 12 + 12 balls were pitched total.
This is also equal to (12)(9) = 108 balls.
108 balls were pitched during practice.
Hope this helps!
Answer: 4x
Step-by-step explanation: Move all terms that don't contain y to the right side and solve. y = 4x
We are given that there are a total of 78 students. If we set the following variables:

Then, the sum of all of these must be 78, that is:

Since there are 15 in chemistry and physics and 47 in chemistry, we may replace that into the equation and we get:

Simplifying:

Now we solve for P by subtracting 62 on both sides:

Therefore, there are 16 students in physics
I hope this helps you
(-)×(-)=+
-(-16)
+16
5/50=n/110
Do the cross product.
50*n=5(110)
50n=550
n=550/50
n=11
Answer: n=11.