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OpenStudy (coopergang):
what is the sum of the first eight terms of a geometric series whose first term is 3 and whose common ratio is 1/2
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rebeccaxhawaii (rebeccaxhawaii):
Ok so a_1 is 3 and r=1/2
OpenStudy (coopergang):
a) 3/128, b)255/128, c)765/128, d)255/256
OpenStudy (coopergang):
@rebeccaxhawaii
rebeccaxhawaii (rebeccaxhawaii):
Sorry bud. Just helping someone real quick.
rebeccaxhawaii (rebeccaxhawaii):
Ok so a_1 is 3 and n=8 and r=1/2
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OpenStudy (coopergang):
i have no clue what tihs means @rebeccaxhawaii
rebeccaxhawaii (rebeccaxhawaii):
Sum formula. |dw:1464308457900:dw|
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