Ask Question
17 July, 19:37

Find the sum of the geometric series - 3,15,-75,375 when there are 9 terms and select the correct answer below

+5
Answers (1)
  1. 17 July, 20:55
    0
    The sum to nterms:

    Sn=a (r^n - 1) / (r-1)

    r=15/-3=-5

    a=-3

    Sn=-3 (-5⁹ - 1) / (-5-1) = - 976563

    Answer; - 976563
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Find the sum of the geometric series - 3,15,-75,375 when there are 9 terms and select the correct answer below ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers