Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
sasogeek
Group Title
is it okay to do this...? and did i get it correct anyway? the third term of an exponential sequence is 12 and the 9th term is 768. find the values of the common ratio.
\[\large ar^2=12 \]\[\large ar^8=768\]
\[\large \frac{ar^8}{ar^2}=\frac{768}{12}\]
\[\large r^6=64 \]
\[\large r=2 \ , \ r=2\]
I forgot the formulas and decided to go with this but i don't know if it is correct or even if it's acceptable... can anyone confirm for me please?
 2 years ago
 2 years ago
sasogeek Group Title
is it okay to do this...? and did i get it correct anyway? the third term of an exponential sequence is 12 and the 9th term is 768. find the values of the common ratio. \[\large ar^2=12 \]\[\large ar^8=768\] \[\large \frac{ar^8}{ar^2}=\frac{768}{12}\] \[\large r^6=64 \] \[\large r=2 \ , \ r=2\] I forgot the formulas and decided to go with this but i don't know if it is correct or even if it's acceptable... can anyone confirm for me please?
 2 years ago
 2 years ago

This Question is Closed

sasogeek Group TitleBest ResponseYou've already chosen the best response.0
truth is i've even forgotten if this is exactly how to do it lol. i literally have no memory of the classes i took for this topic
 2 years ago

.Sam. Group TitleBest ResponseYou've already chosen the best response.3
yeah you can do that
 2 years ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
You are perfectly correct, math can be done in infinite ways :)
 2 years ago

Mimi_x3 Group TitleBest ResponseYou've already chosen the best response.0
it looks like a geometric progression.. i dont know what's an exponential sequence.. http://en.wikipedia.org/wiki/Exponential_sheaf_sequence
 2 years ago

.Sam. Group TitleBest ResponseYou've already chosen the best response.3
\[a_3=12\] \[a_9=768\]  \[ar^2=12\] \[ar^8=768\] \[\frac{12}{r^2}r^8=768\] \[r^6=64\] \[r= \pm 2\]
 2 years ago

sasogeek Group TitleBest ResponseYou've already chosen the best response.0
same thing :) different name
 2 years ago

.Sam. Group TitleBest ResponseYou've already chosen the best response.3
GP formula \[\Huge T_n=a_1r^{n1}\]
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.