math

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Find the rule for 9,16.8, 24.6, 32.4

  • math -

    16.8 - 9 = 7.8

  • math -

    i left out the part that you need to put it in nth term

  • math -

    a(n)=a(n-1)+7.8

    OR

    a(n)=a1+(n-1)*d

    a(n)=9+(n-1)*7.8


    In google type:
    arithmetic progression

    When you see list of results click on some site.

    wikipedia is good choice

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