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anonymous
 one year ago
Check my answer?
Find S12 for the series 2 + 5 + 8 +...
I think it's 35
anonymous
 one year ago
Check my answer? Find S12 for the series 2 + 5 + 8 +... I think it's 35

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2S12 means "the 12th partial sum". It's a lot bigger than 35

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you explain how to do it please?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2what is the nth term equal to

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2the nth term will be some expression with n in it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay is it 2n then? I'm sorry I'm confused on the section I'm doing.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2first term is a1 = 2 common difference is d = 3 you plug those things into an = a1 + d(n1) to get the nth term

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay I got n=1? I feel like I somehow did something wrong in that equation lol

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2\[\Large a_{n} = a_1 + d(n1)\] \[\Large a_{n} = 2 + 3(n1)\] \[\Large a_{n} = ???\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay thank you I understand the equation now

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2so that simplifies to what?
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