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Mathematics 17 Online
OpenStudy (anonymous):

16+8+4+2+1+... (find the infinite sum of the geometric series)

jimthompson5910 (jim_thompson5910):

the first term is a = 16 the common ratio is r = ???

OpenStudy (anonymous):

I don't know

jimthompson5910 (jim_thompson5910):

what are you multiplying 16 by to get to 8?

OpenStudy (anonymous):

duh 1/2 :)

jimthompson5910 (jim_thompson5910):

so a = 16 r = 1/2

jimthompson5910 (jim_thompson5910):

plug this into S = a/(1-r) Note: this formula only works if |r| < 1, which is true in this case (since |1/2| < 1 is true)

OpenStudy (anonymous):

32 got it .. Thank you so much. FInal on Monday and trying to figure all this out

jimthompson5910 (jim_thompson5910):

32 is correct, yw

OpenStudy (anonymous):

can I ask another question while I have you attention

jimthompson5910 (jim_thompson5910):

good luck and i'm sure you'll do well

jimthompson5910 (jim_thompson5910):

sure whats up

OpenStudy (anonymous):

|dw:1368235528107:dw|] sorry about the drawing :)

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