Prove the identity sin(2x)/sinx - cos(2x)/cosx= secx

Mr. johansen is cutting construction paper for an art project. he has 24 students, and six pieces of construction paper. how much paper will each student receive?

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?