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Mathematics 9 Online
OpenStudy (vladthepro):

Correct?! What is the sum of an 8-term geometric series if the first term is −11, the last term is 180,224, and the common ratio is −4? −143,231 −36,047 144,177 <----- 716,144

OpenStudy (vladthepro):

Am I correct?

OpenStudy (vladthepro):

@ILovePuppiesLol @ILovePuppiesLolz @wolf1728 Am I correct?

OpenStudy (anitas.):

You are Correct because (1 - (r)^n)/(1 - r) = (-11)(1 - (-4)^8)/5 = 144,177

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