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23-05-2017
Mathematics

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For this infinite geometric series: Find r 36 + 18 + 9

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apologiabiology apologiabiology

23-05-2017

36 to 18 is divide by 2

an=a1(r)^(n-1)
a term times r results in the following term
36 times 1/2=18

so r=1/2 or 0.5

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