ana wants to find the fifth term of a sequence -12, -7, -2, 3 witch concept will you suggest to be used a. geometric sequence

Question

ana wants to find the fifth term of a sequence -12, -7, -2, 3 witch concept will you suggest to be used

a. geometric sequence
b. fibonacci
c. arithmetic sequence
d. harmonic

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Thu Giang 5 years 2021-07-30T07:51:11+00:00 1 Answers 83 views 0

Answers ( )

  1. thuhuong
    0
    2021-07-30T07:52:50+00:00
    Reply

    Answer:

    Ana should use Arithmetic sequence because in this sequence there is successive addition of 5.

    so,

    5th term = a + (5 – 1)d

    where, a is the first term, and d is the common difference.

    a = -12 ( first term )

    d = 5 ( -7 – (-12 ) = -7 + 12 = 5 )

    so,

    5th term :

    =》 -12 + (5 – 1)5

    =》 -12 + (4 × 5)

    =》 -12 + 20

    =》 8

    hence, 50 th tem of the sequence is 8

    Arithmetic sequence

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