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29 March, 13:08

33,29,25,21, determine if the sequence is arithmetic

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Answers (2)
  1. 29 March, 13:14
    0
    it is

    Step-by-step explanation:

    First differences are ...

    29 - 33 = - 4 25 - 29 = - 4 21 - 25 = - 4

    First differences are all the same, so we say the terms have a "common" difference. That is characteristic of an arithmetic sequence.

    Yes, this sequence is arithmetic.
  2. 29 March, 13:30
    0
    Yes, in all cases the new term is 4 less than the previous term, and so this sequence is arithmetic.

    Step-by-step explanation:

    If arithmetic, this sequence must have one and only one difference between terms.

    33 - 4 = 29

    29 - 4 = 25

    25 - 4 = 21

    Yes, in all cases the new term is 4 less than the previous term, and so this sequence is arithmetic.
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