xJai
What is the sum of an 8–term geometric series if the first term is 15 and the last term is –4,199,040?



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ktklown
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Step one is to find the ratio between the two terms.

xJai
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How would you get that

ktklown
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Did you learn a method for finding the constants in a geometric series?

ktklown
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hi, are you there?

xJai
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Yea I was trying to solve it I had to look back I got 3,599175