Csc(6x)+cot(6x)/csc(6x)-cot(6x)= a. cot(3x) b. cot^2(3x) c. cot^2(6x) d. tan(6x)

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?