19. The measures of the three angles of a triangle are given by x + 4, x, and 2x.
What is the value of x?

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

How to use order of operation in 20 divide by 4 multiply 5 = 1

Evaluate cos2θ for cosθ = square root of 3/2