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06-06-2017
Mathematics

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If the nth partial sum of a sequence an is given by sum_{k=1}^{n} 2k+4 then what is the 4th term of the sequence? A. 12 B. 14 C. 6 + 8 + 10 + 12 D. 4

Respuesta :

06-06-2017

2(1)+4=6
2(2)+4=8
2(3)+4=10
2(4)+4=12
fourth term would be 12 or A

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