Ask your own question, for FREE!
Mathematics 18 Online
OpenStudy (yuii):

What is the recursive rule for this geometric sequence? 7, 21, 63, 189, … http://prntscr.com/dg48wx

OpenStudy (mathmale):

Think: How would you get from 7 to 21 via multiplication? From 21 to 63 via multiplication? What is the common ratio here? Please answer; then we'll continue.

OpenStudy (yuii):

You'd have to multiply by three.

OpenStudy (mathstudent55):

Correct. That means any new term is the previous term multiplied by 3.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!