Dave can clean pools at a constant rate of 3/5 pools/hour.
a. what is the ratio of the number of pools to the number of hours?
b. how many pools can dave clean in 10 hours?
c. how long does it take dave to clean 15 pools?

a. 3/5 pools per hour.

b. 6 pools

c. 25 hours  

Step-by-step explanation:

Hi, the answers are.

The ratio of the number of pools to the number of hours is already given in the question. Is 3/5 pools per hour.

Ratio = number of pools/ time

b. We have to multiply the ratio by 10 hours.  

3/5 pools/hour x 10 hours = 6 pools

c. we have to divide the number of pools (15) by the ratio

15 pools /3/5 pools/hour = 25 hours  

Feel free to ask for more if needed or if you did not understand something.

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya