Mathematics, 30.07.2019 19:40 bamagirl3871
What is the sum of the geometric sequence -4, 24, -144, if there are 6 terms
Answers: 2
![S=a1[\frac{1-r^{n}}{1-r}]](/tpl/images/0151/6615/ca5d2.png)
![S=(-4)[\frac{1-(-6)^{6}}{1-(-6)}]](/tpl/images/0151/6615/5c229.png)
![S=(-4)[\frac{1-(-6)^{6}}{7}]](/tpl/images/0151/6615/ada5e.png)
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What is the sum of the geometric sequence -4, 24, -144, if there are 6 terms...
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