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Vladimir79 [104]
3 years ago
15

0.25 + 1 + 4 + 16 + 64 Enter the values used in finding a partial sum.

Mathematics
2 answers:
Deffense [45]3 years ago
6 0
This is a geometric series

r = 4
a1 = 0.25
n = 5
Alexeev081 [22]3 years ago
4 0

Answer:  The required values are

r=4,~~a_1=0.25~~\textup{and}~~n=5.

Step-by-step explanation:  We are given a partial sum as follows :

0.25 + 1 + 4 + 16 + 64.

We are to find the values of r,~~a_1~~\textup{and}~~n.

From the given partial series, we note that

the series is a geometric one with first term 0.25 and common ratio calculated as follows :

r=\dfrac{1}{0.25}=\dfrac{4}{1}=\dfrac{16}{4}=\dfrac{64}{16}=4.

Also, since there are 5 terms in the given sum, so the value of n is 5.

Thus, the required values are

r=4,~~a_1=0.25~~\textup{and}~~n=5.

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