Answer:
The number of pools clean per hour is 1.5
Step-by-step explanation:
Given as :
The number of pools clean in 8 hours = 12
The number of pools clean in 7.5 hours = 9
Let The number of pools they clean per hours = x
I.e x =
+
Or, x =
Or, x =
∴ x =
I.e x = 1.5
Hence The number of pools clean per hour is 1.5 Answer
Answer:

Step-by-step explanation:
Let
represent students playing basketball,
represent students playing baseball.
Then,
, 
Let
be the total number of students. So,
.
Now,


3 students play neither of the sport. So, students playing either of the two sports is given as:

∴ 
From the probability addition theorem,

Where,
is the probability that a student chosen randomly from the class plays both basketball and baseball.
Plug in all the values and solve for
. This gives,

Therefore, the probability that a student chosen randomly from the class plays both basketball and baseball is 
Just find the middle of them
Answer:
yes
there would be 7525 runners
Step-by-step explanation:
The formula for calculating future value:
FV = P (1 + r) n
FV = Future value
P = Present value
R = interest rate
N = number of years
6500 x (1.05)^3 = 7525 runners
The correct answer for the question that is being presented above is this one: "D. b² − 3b + 18 R252. T<span>he quotient of b^3+4b^2-3b+126/b+7. In order to get the answer, you have to start dividing b^3 by b. Then multiply the quotient to b + 7. Then after that, subtract. Do the same thing until you reached the end.</span>