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Determine whether the sequence 7, 21, 35, 49 is geometric. If so, find its common

ratio.

Answer:

a. no

b. yes, common ratio of 14

c. yes, common ratio of 2

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Answers (1)
  1. 4 July, 18:57
    0
    a. no

    Step-by-step explanation:

    The sequence is arithmetic. It has a common difference of 14.

    7 + 14 = 21

    21 + 14 = 35

    35 + 14 = 49

    A geometric series has a common ratio (multiplication). For example:

    7 * 3 = 21

    21 * 3 = 63

    63 * 3 = 189
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