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anonymous
 one year ago
Write the sum using summation notation, assuming the suggested pattern continues.
9  3 + 3 + 9 + ... + 81
anonymous
 one year ago
Write the sum using summation notation, assuming the suggested pattern continues. 9  3 + 3 + 9 + ... + 81

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@hartnn what about this

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1what would you multiply to current term to get next term ?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1multiply/add/divide/subtract**

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0summation of the quantity negative nine plus six n from n equals zero to fifteen summation of negative fifty four times n from n equals zero to fifteen summation of negative fifty four times n from n equals zero to infinity summation of the quantity negative nine plus six n from n equals zero to infinity

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0those are the choices

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ik we can cross out the last 2 because they are infinity and this one ends with 81

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1yes, adding 6 is correct, so this is indeed an arithmetic series, lets find the n'th term equation for that \(a_n = a_1 +(n1)d\) we know d  common difference = 6 a1 = 1st term = 9 plug in!

hartnn
 one year ago
Best ResponseYou've already chosen the best response.1and you're right! this is a finite series, the answer is from 1st 2 choices only :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it would be the first choice?
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