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17 January, 15:00

The sum of the first 7 terms of an arithmetic

sequence 2.5, 7.5, 12.5, 17.5, ... would be:

+5
Answers (1)
  1. 17 January, 18:43
    0
    2.5 7.5 12.5 17.5 22.5 27.5 32.5

    Step-by-step explanation:

    Just add 5 to the previous sum considering it is arithmetic sequence is always addition.
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