Find \sin(\angle ABC - 60^{\circ})sin(∠ABC−60 ∘
)sine, left parenthesis, angle, A, B, C, minus, 60, degrees, right parenthesis.

Lines p and q intersect. find the value of b. show your work. cite any theorems you use.

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?