A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
What is the sum of a 6term geometric series if the first term is 8 and the last term is 134,456 ? Answers to choose from.
a)129,513
b)130,624
c)156,864
d)172,846
anonymous
 3 years ago
What is the sum of a 6term geometric series if the first term is 8 and the last term is 134,456 ? Answers to choose from. a)129,513 b)130,624 c)156,864 d)172,846

This Question is Closed

cwrw238
 3 years ago
Best ResponseYou've already chosen the best response.1let the first term = a then 6th term =ar^5 where r = common ration can you find r from this information?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i might need some guidance but let me try!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i really dont know how i got this but i ended up with 832 as the common ratio.

cwrw238
 3 years ago
Best ResponseYou've already chosen the best response.16tt term = 134456 = ar^5 ist term = 8 so ar^5/a = r^5 = 134456/8 = 16807

cwrw238
 3 years ago
Best ResponseYou've already chosen the best response.1you can now find the sum of the 6 terms by plugging in the values of a and r into the formula sum = a * r^n  1  r  1

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0ohh i see what i di wrong !! i was way off

cwrw238
 3 years ago
Best ResponseYou've already chosen the best response.1the value of n (number of terms) is 6

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0okayy i got c)156,864
Ask your own question
Sign UpFind more explanations on OpenStudy
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.