SOLUTION: What is the sum of an 8-term geometric series if the first term is 14 and the last term is -3,919,104?
Algebra.Com
Question 773413: What is the sum of an 8-term geometric series if the first term is 14 and the last term is -3,919,104?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What is the sum of an 8-term geometric series if the first term is 14 and the last term is -3,919,104?
-----
S(n) = (n/2)(a + L)
--------
n = 8 ; a = 14 ; L = -3,919,104
---------------------
S(8) = 4(-3919090) = -15676360
-----------
Cheers,
Stan H.
===============
RELATED QUESTIONS
What is the sum of a 6-term geometric series if the first term is 19 and the last term... (answered by MathTherapy,KMST)
The sum of infinite geometric series with first term 3 and second term 0.75... (answered by htmentor)
an infinite geometric series with second term -8/9 and sum 2. what is the first... (answered by ikleyn)
Find the sum of AP whose first term is 60 and last term is... (answered by greenestamps)
The sum of a geometric series is 57232. The common ratio is 2 and the last term is 28672. (answered by venugopalramana)
the first term of a geometric series is 3,the last term is 768 if the sum of the term is... (answered by ikleyn,greenestamps)
The sum of an infinite geometric series is 5/2 and the first term is 3. Find the common... (answered by stanbon)
The sum of an infinite geometric series is 10/3 and the first term is 5. Determine the... (answered by ikleyn)
The first term of a geometric series is 3, and the sum of the first term and the second... (answered by reviewermath)