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2 March, 18:06

Determine if the following sequence is geometric

A) 5,2,-1,-4

B) 5,10,20,40

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Answers (1)
  1. 2 March, 18:22
    0
    A) No. It is an arithmetic sequence because you are subtracting by 3.

    B) Yes. It is a geometric sequence because you are multiplying by 2.

    Step-by-step explanation:

    Arithmetic is addition or subtraction.

    5 - 3 = 2 2 - 3 = - 1 - 1 - 3 = - 4

    Geometric is multiplication.

    5 X 2 = 10 10 X 2 = 20 20 X 2 = 40
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