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 one year 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
 one year 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

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cwrw238
 one year 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?

ridgeboy36
 one year ago
Best ResponseYou've already chosen the best response.0i might need some guidance but let me try!

ridgeboy36
 one year 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
 one year 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
 one year 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

ridgeboy36
 one year ago
Best ResponseYou've already chosen the best response.0ohh i see what i di wrong !! i was way off

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

ridgeboy36
 one year ago
Best ResponseYou've already chosen the best response.0okayy i got c)156,864
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