If sin a= 5/13 and cos B =4/5 (both in QI), then find sin (a – B) (show clear step by step on white paper to be attached to the HUB), a= -16/65
b= 16/65
c= -65/16
d=65/16

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12