It takes 45 seconds. the easiest way to do these is to use a graphic calculator and replace the variables with x and y, for example, this equation would become -5x^2+30x, and if you don't have access to a graphing calculator, you can always use desmos online.
Answer:
46°
Step-by-step explanation:
Answer:
Step-by-step explanation:
3 × (4 + 5) - 6 = 21
4 × (3 + 2) - 8 = 12