2x + 5y - 28
-2x - 5y = -18

Elimination

Classify the following triangle check all that apply

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning