The radius of a circle is 9. using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter? a) c /9 = π b) c /18 = π c) c = 9π/r d) c = r /18π

The answer is C.

Step-by-step explanation:

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation: