Answers

  • Brainly User
2016-07-21T13:46:12+08:00
Common difference (d) :  -3

1 - 4 = -3

-2 - 1 = -3

-5 - (-2) = -3

Solution:

n = ?     a₁ = 4       d = -3     an =  -29

an = a₁ + (n-1) (d)

-29 = 4 + (n-1) (-3)

-29 = 4 -3n + 3

-29 = -3n + 7

3n = 7 + 29

3n/3 = 36/3

n = 12

ANSWER:  12th term
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