
Divide both sides by 25 to isolate x:
Answer:
10 minutes?
Step-by-step explanation:
Sorry if it is incorrect but what I did was I found the average of 5 minutes and 15 minutes and got 10.
Here's my problem solving explanation:
(5 + 15) / 2 = 10
Answer:
A) 4 groups of 9 negatives
Step-by-step explanation:
-36/4
-9
This means we have 4 groups of 9 negatives
So we have the equation:

Then we need to multiply by 4 on both sides to get rid of the denominator on the left:

Then we subtract 9 on both sides to solve for z:

Therefore the answer is z = -0.6.