Mathematics

Question

Given the arithmetic sequence, what is a18?
18,14,10
A18=

2 Answer

  • 18 is the starting term and the common difference is -4
    Hope it helped!!!
  • The first term is a1 = 18
    The common difference is d=-4

    And the nth term of an arithmetic sequence is given by
    an = a1 + (n-1)d

    Plugging in what we know:

    an = 18 + (n-1)(-4)

    So find the 18th term of this arithmetic sequence,
    replace n with 18,

    a18 = 18 + (18-1)(-4)

    and simplify.
NEWS TODAY

You May Be Interested