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1 vote
Identify a1, r, and n for the sum of the geometric series. 1 2 + 3 8 + 9 32 + 27 128 + 81 512

2 Answers

2 votes

Answer:

then to find the sum on edge Find the sum.

1(269/512)

Explanation:

User Dermott
by
7.8k points
5 votes

Answer:

a1 = 1/2

r = 3/4

n = 5

Explanation:

The given geometric series is:


(1)/(2)+(3)/(8)+(9)/(32)+(27)/(128)+(81)/(512)

a1 represents the first term of the series. From the above series we can see that the first term is 1/2

r is the common ratio of a geometric series. It can be calculated by dividing any term of the geometric series with its previous terms. For the given series r will be:


r=((3)/(8) )/((1)/(2) )=(3)/(4)

n represents the number of terms in the series. From the above series we can count the number of terms to be 5.

User Malik Brahimi
by
8.0k points
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