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Mathematics 21 Online
OpenStudy (anonymous):

I got 10000 something. Sigma solution, pic.

OpenStudy (anonymous):

15th partial sum of E(i=1) 12i-7 |dw:1352552098499:dw|

OpenStudy (anonymous):

a_1= 5 I got cuz 12(1)-7=5, a_15= 173 I got 12(15)-7 n=169 then (n/2)(a^1+a^n) I got 10,027.3333 but my options are a)178 b)2,670 c)1,246 d) 1,335

OpenStudy (anonymous):

Its d

OpenStudy (anonymous):

alright i appreciate it, i guess

OpenStudy (anonymous):

can you tell me if these are correct?

OpenStudy (anonymous):

|dw:1352552538940:dw|

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