2 3/4 - (-1 1/2) + (-5/6) - (-3/8) - (+4 2/3) Pls...help...need..quick

What’s -11-33k and factor each expression completely

Acompany that makes? hair-care products had 5000 people try a new shampoo. of the 5000 ? people, 35 had a mild allergic reaction. what percent of the people had a mild allergic? reaction?

The area of each triangle is 7 square units. the surface area of the triangular prism is