Simplfy i wrote this to get 20 characters

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Asap i need it now choose all the answers that apply. sex-linked disorders affect males more than females affect females more than males can be carried by females, without being expressed are always expressed in males are caused by genes carried on the x and y chromosomes

Solve 13 + w/7= -18 (w/7 is a fraction)