suppose that z varies jointly as x and y, and z=15 when x=1 and y=3. What is the constant of proportionality

find z given x = 26 and y = 37

z = 2*26*37 = 1924

Step-by-step explanation:

i think

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: