MATH

THE FRIST TERM OF AN A.P IS EQUAL TO TWICE THE COMMON DIFFERENCE D FIND IN TERM OF D THE 5TH TERM OF THE A.P

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asked by TIMMY
  1. The frist term of an A.P is equal to twice the common difference d mean:

    a1 = 2 d

    nth term of the A.P:

    an = a1 + ( n - 1 ) d


    a5 = a1 + ( 5 - 1 ) d

    a5 = a1 + 4 d

    Since a1 = 2 d

    a5 = a1 + 4 d = 2 d + 4 d = 6 d

    a5 = 6 d

    posted by Bosnian

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