Answer:
38
Step-by-step explanation:
10+10=20
9+9=18
20+18=38
We are given the expression B=3Mn/2 and told to express M in terms of B and n. This means that we should apply mathematical operations on both sides of the equation so we "isolate " M on one side of the equality sign. We begin with the given equation

First, we multiply both sides by 2, so we get

Next, we divide by 3 on both sides, so we get

Finally, we divide both sides by n, so we get

In this case, we have succesfully expressed M in terms of B and n
She drunk about
9 and 3/4 of her water
hope this helps :3
Answer:
The best approximation is 
Step-by-step explanation:
we know that
The area of the circle is equal to

In this problem we have


substitute

13.2 first look at the 2 if is lower then the number five so u round down to 0 the decimal stays there so it's no 13.0 now u do the same to the 13 only u round up since its higher so u round it up to 20 and ur answer should be 20.0