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ridgeboy36
 2 years ago
What is the sum of the geometric sequence 2,8,32,... if there are 8 terms? Answers to choose from.
a)21,845
b)43,690
c)65,535
d)87,380
ridgeboy36
 2 years ago
What is the sum of the geometric sequence 2,8,32,... if there are 8 terms? Answers to choose from. a)21,845 b)43,690 c)65,535 d)87,380

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geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Do you know the formula for the sum of \(n\) terms in a geometric sequence?

ridgeboy36
 2 years ago
Best ResponseYou've already chosen the best response.0no could you guide me through this whole problem

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1\[\Large{S_{n} = \frac{a_{1}(1r^{n})}{1r}}\] \(a_{1}\) is your first term. \(r\) is the ratio (what you multiply by between each term). \(n\) is the number of terms (given as 8).

ridgeboy36
 2 years ago
Best ResponseYou've already chosen the best response.0i got 43,690 as my answer is this correct?
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