Sunil asks Sandra for 15 cookies. Saki then asks Sandra for 12 cookies. If Sandra originally had sixty cookies, What fraction of the initial amount of cookies does she have? Answer
1/1
of the initial amount of cookies

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =