We are given a geometric sequence with first term, firth term and the common ratio. We are asked to find the sum of first 5 terms of the geometric series.

The formula to calculate the sum of finite geometric series is:

$S_{n}=\frac{a_{1}(1-r^{n})}{1-r}$

Since we need to find the sum of first 5 terms, n will be 5. Using these values in the above formula, we get:

$S_{5}=\frac{0.28(1-6^{5})}{1-6}\\\\ S_{5}=435.4$

Therefore, the sum of first 5 terms of the given geometric series would be 435.4

4 0

3 years ago

There are approximately 2.8 million deaths per year in country a Express this quantity as deaths per minute

Romashka-Z-Leto [24]

There are 525600 minutes in one year so

2800000 / 525600 = 5.3272 deaths per minute

3 0

4 years ago