D. (xy2 + 3z14)(x2y4 – 3xy2z14 + 9z28
Answer:
C brainliest?
Step-by-step explanation:
Answer:
(the pic)
Step-by-step explanation:
I used a link
Answer: 143 hamburgers and 429 cheese burgers
Explanation:
Call h and c the number of both items.
(h-hamburger and c-cheeseburger)
h + c = 572
c = 3h
Sub the second into the first
h + 3h = 572
4h = 572
Divide both sides by 4
h = 143 hamburgers
Use this back into the second equation
c = 3 • 143 = 429 cheeseburgers