marisadmnd marisadmnd

05-11-2016
Mathematics

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(08.04 MC) Find the sum of an 8-term geometric sequence when the first term is 7 and the last term is 114,688 and select the correct answer below.

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Aliwohaish12 Aliwohaish12

05-11-2016

a,ar,ar2,ar3,...,ar7 you are given ar7=114688 and a=7 so you can find r just solve 7r7=114688 for r

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