What is the equivalent algebraic expression of " 5 less than four times a

number x " ?

What is the relationship between all triangles that can be drawn given the same three angles

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document