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

  1. 0
  2. 0
  3. 15
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

    1. 0
    2. 0
    posted by Bosnian

Respond to this Question

First Name

Your Response

Similar Questions

  1. MATH

    The forty and the 9th term of an AP is -3 and 12 respectively. Find the common difference and some of the frist 7th term

    asked by JOHN on October 3, 2016
  2. Maths

    The first term of an AP is 12 and that of a GP is 6. The common difference and the common ratio are equal, so as are the sum of the fist 3 terms. Find the possible values of the common difference?

    asked by Andre on December 1, 2014
  3. Precalculus

    1. In an arithmetic sequence, the fifth term, u5, is greater than the first term, u1. The difference between these terms is 36. a) find the common difference 9? The tenth term of the sequence is double the seventh term . b) find

    asked by Anonymous on May 6, 2014
  4. arithmetic

    the sum of the n termsof an ap whose first term is 5 and common difference is 36 is equal to the sum of 2n terms of another AP whose first term is 36 ans common difference is 5. Find n?

    asked by FEBIN on January 17, 2012
  5. PreCalc

    The fifth term of an arithmetic sequence is equal to 6 and the sum of the first 12 terms is equal to 45. Find the first term and the common difference. having trouble with this, can't figure out the steps?

    asked by jeff on October 19, 2017
  6. math

    in an arithmetic progression the 50th term is equal to 3, and the sum of the first 8th is equal to 23. find the first term and the common difference

    asked by Ali on November 5, 2010
  7. PreCalc

    The fifth term of an arithmetic sequence is equal to 6 and the sum of the first 12 terms is equal to 45. Find the first term and the common difference.

    asked by Cloud on November 6, 2016
  8. Sequence

    Find the common difference and a formula formula for the nth term of the arithmetic sequence; 6, 2, -2, -6, -10,...a sub n = a)6-4n b)6-2n c)10-2n d)10-4n I think it is c but want to check. Ao is 10, then each term subtracts 4n

    asked by raven31792 on March 9, 2007
  9. Math(A.P)

    The fourth term of an A.P is equal to 3 times the first term and the seventh term exceeds twice the third term by 2. The first term and the common difference are:

    asked by Ana...... on December 28, 2016
  10. Mathematics

    The firts terms a of an A.P is equal to twice the common difference d.Find, in term of d, the 5th term of the A.P.

    asked by Yinka on November 3, 2011

More Similar Questions