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Mathematics, 25.03.2020 17:59 idcbrooo

Find the sum of the first six terms of a geometric series in which a1 = 4 and r = -3: A. 729 B. -729 C. -728 D. 728 plz help

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Find the sum of the first six terms of a geometric series in which a1 = 4 and r = -3: A. 729 B. -729...
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