arithmetic

List the terms that complete a possible pattern in each of the following and state whether the pattern is arithmetic, geometric, or neither:

(a) 38, 33, 28, 23, 18, …


(b) 640, 320, 160, 80, …


(e) 1, ___, ___, ___ 25, 36, 49

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asked by judy
  1. Study this site, and then post what you think the answers are.

    http://www.mathsisfun.com/numberpatterns.html

  2. a)The pattern is continued by subtracting 5 each time.


    b)The pattern is continued by dividing by 2 each time.


    e)

    1,4,9,16,25,36,49


    In this series,all numbers are the squares of consecutive integers.

    1^2=1

    2^2=4

    3^2=9

    4^2=16

    5^2=25

    6^2=36

    7^2=49

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