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Determine the value of k if $\sum_{t=1}^{\infty}  4k^{t-1} = 5$
in Grade 12 Questions by Platinum (113k points) | 19 views

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common ratio= k

sum of geometric=  a/(1-r)

                             = 4/(1-k) = 5

                                    4= 5(1-k)

                                    k= 1/5
by Diamond (85.5k points)

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