Prove: sec2θ=csc^2θ/(2 cot^2θ-csc^2 θ)

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

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