Abox of cereal contains 6 cups of cereal each serving is 1/3 of a cup how many servings are in the box

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?