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5 November, 19:39

What is the sum of the geometric sequence 1,3,9, ... if there are 13 terms

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  1. 5 November, 21:19
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    The answer is 797,161

    Step-by-step explanation:

    This one is fairly easy if tedious.

    How do you get from to 3 from 1? (multiply 1 by 3).

    How do you get to 9 from 3? (multiply 3 by 3).

    Then simply multiply each successive result by 3 until you have 13 results. Then add those 13 results.
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