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superhelp101
 one year ago
what is the sum of first 150 terms in sequence of..
superhelp101
 one year ago
what is the sum of first 150 terms in sequence of..

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superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0dw:1432790538670:dw

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0a) 61200 b)90000 c)122400 d)180000

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1it's arithmetic seq so formula is \[\huge\rm s_n = (\frac{ a_1 +a_n }{ 2 })\] a_n = last term

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0how do i find the last term?

rational
 one year ago
Best ResponseYou've already chosen the best response.1you may use \(n\)th term formula \[\large a_n = a_1 + (n1)d\]

rational
 one year ago
Best ResponseYou've already chosen the best response.1dw:1432791026176:dw

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1correction \[\huge\rm s_n =\color{red}{n} (\frac{ a_1 +a_n }{ 2 })\] a_n = last term

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0so dw:1432791117579:dw

rational
 one year ago
Best ResponseYou've already chosen the best response.1Yes, find \(a_n\) and plug it in

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0still don't know how

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0so would it be A?

rational
 one year ago
Best ResponseYou've already chosen the best response.1\[a_{150} = 1000+(1501)(8) = 192\]

rational
 one year ago
Best ResponseYou've already chosen the best response.1then the sum is \[S_{150} = \frac{150(1000192)}{2} =606000 \]

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0oh ! i don't know :/

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0how would u do it?

rational
 one year ago
Best ResponseYou've already chosen the best response.1606000 is the sum of first 150 terms it seems the options are wrong

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0a) 61200 b)90000 c)122400 d)180000 these are the answer choices ?

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0it might been a typo

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1take a screenshot o^_^o

superhelp101
 one year ago
Best ResponseYou've already chosen the best response.0it ok, but thxx for all the help :D
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