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anonymous
 one year ago
Find the sum of the first 9 terms of the sequence. Show all work for full credit.
2, 7, 16, 25, ...
anonymous
 one year ago
Find the sum of the first 9 terms of the sequence. Show all work for full credit. 2, 7, 16, 25, ...

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.0this is an arithmetic series with common difference 9

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im really confused on how to solve it

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0Sn = (n/2)[2a1 + (n 1)d] where a1 = first rems, n = number of terms and d = common difference

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0Sn is sum of n terms , here n = 9

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0just plug the values into the formula

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh ok thanks. i understand

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0your answer is approximately 300
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