Mark M. answered • 03/01/20
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
a3 = a1(r)n-1
245 = 5(r)2
49 = r2
±7 = r
Angela A.
asked • 03/01/20What is geometry
What is a common ratio of the geometry sequence whose first term is 5 and 3rd term is 245.
More
2 Answers By Expert Tutors
Sam Z. answered • 03/01/20
Tutor
4.3
(12)
Math/Science Tutor
Multiply by 7 then 7 again. In other words 7^2.
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
Mark M.
-7 could also be the common ratio.03/01/20