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,

Question

3 years ago

9

how many terms are in this geometric series

2 answers:

vladimir1956 [14] · Answer 1 · 2022-03-01T21:22:09+03:00

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] · Answer 2 · 2022-03-01T23:47:22+03:00

6 0

Answer:

5

Step-by-step explanation: