-10/2 = 50/(-10) = -250/(50) = -5 = common ratio
a1 = 2
an = -5an-1 , if n ≥ 2
Mirian D.
asked 09/24/18
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.