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Mathematics 7 Online
OpenStudy (anonymous):

Find s25 for the following arithmetic sequence -7, -2, 3, 8,...?

OpenStudy (anonymous):

\[S_n=\frac{ n }{ 2 }[2a_1+(n-1)d]\] S(n)=Sum of n terms in an arithmetic sequence a(1)=first term of the sequence d=common difference

OpenStudy (anonymous):

can you continue from there??

OpenStudy (anonymous):

yes thanks

OpenStudy (anonymous):

you are welcome!...(:

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