Mathematics, 09.10.2019 06:30 nsjcbdhcb
What is the sum of a 7-term geometric series if the first term is 6, the last term is 24,576, and the common ratio is −4?
Answers: 1
![S_{7}=(6)\frac{[1-(-4)^{7}] }{[1-(-4)]}=6.\frac{(1+16384)}{(1+4)}=\frac{(6)(16385)}{5}= 19662](/tpl/images/0302/9039/b0a37.png)
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What is the sum of a 7-term geometric series if the first term is 6, the last term is 24,576, and th...
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