The radius of circle is 9. Using pie, which equation expresses the ratio of the circumference of the circle to the circle's diameter?

B) C/18 = PI

Step-by-step explanation:

C = PI * Diameter

C = PI * 2R

C = PI * 18

C/18 = (PI * 18)/18

C/18 = PI

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.