Ask Question
28 January, 19:32

Find a in a geometric series for which Sn = 728, r = 3, and n = 6.

+1
Answers (1)
  1. 28 January, 21:41
    0
    a = 2

    Step-by-step explanation:

    In geometric series, Sum of the series formula:

    Sn = a[ (rⁿ - 1) / (r - 1) ]

    We are given that Sn = 728 and

    r = 3 and n = 6

    Thus, plugging in the relevant values;

    728 = a[ (3^ (6) - 1) / (3 - 1) ]

    728 = 364a

    a = 728/364

    a = 2
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Find a in a geometric series for which Sn = 728, r = 3, and n = 6. ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers