Asked by MOSA
Determine the first three terms of the arithmetic sequence of which the 4th term is -13 and the 7th term is -25.
Answers
Answered by
R_scott
common difference ... d = (-25 - 13) / (7 - 4)
3rd = 4th - d ... 2nd = 3rd - d ... 1st = 2nd - d
3rd = 4th - d ... 2nd = 3rd - d ... 1st = 2nd - d
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