What is the sum of the first five terms of a geometric series with a1 = 6 and r = 1/3?
i got 242/81 is that correct?

Question

What is the sum of the first five terms of a geometric series with a1 = 6 and r = 1/3?
i got 242/81 is that correct?

cwrw238 · Answer

= 6  *    (1.3)^5  -  1             1/243 - 1
             ----------     =       --------
                                                - 2/3
                1/3  -  1

=   - 242         -3
      ----  *      --
       243           2

cwrw238 · Answer

oh -    that * 6

anonymous · Answer

=   - 242         -3
      ----  *      --      so I find out what this is and that should be my answer?
       243           2

anonymous · Answer

=   - 242         -6
      ----  *      --    did u mean -6 instead of -3?     
       243           2

cwrw238 · Answer

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