Mathematics, 27.07.2021 01:00 jasminethomas383

The first three terms of an arithmetic sequence are: 2y-1 ;4y-1 ;6y-1.
(1)determine T30 in terms of y (2)determine the value of y, given that the sum of the first 30 terms of this sequence is -2820

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The first three terms of an arithmetic sequence are: 2y-1 ;4y-1 ;6y-1.
(1)determine T30 in te...