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Black_prince [1.1K]
3 years ago
9

The first term of a geometric series is -3, the common ratio is 6, and the sum of the series is -4,665 Using a table of values,

how many terms are in this geometric series
Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0

Answer:

There are 5 terms in the series.

Step-by-step explanation:

S=a\frac{1-r^{n} }{1-r}\\a=-3\\r=6\\-4665=-3\frac{1-6^{n} }{1-6}\\1555=\frac{1-6^{n} }{-5}\\\-7775=1-6^{n}\\6^{n}=7776\\

Take logs to get n = 5

aleksley [76]3 years ago
6 0

Answer:

5

Step-by-step explanation:

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