Simplify the expression. csc(-x)/1+tan^2(x)

a. tan(x)
b.-cos(x)tan(x)
c.-cos(x)cot(x)
d. sin(x)tan(x)

The sum of two numbers is 86, and their difference is 20. find the two numbers

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.