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If you mean: 15 11 7 3 then the nth term is 19-4n
It is: nth term = 5-4n and so the next term will be -19
Assuming the pattern would continue: 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13...
If you mean -1 3 7 11 15 then the nth term is 4n-5 and so the next term will be 19
(2n-1)(-1)n
This is an arithmetic sequence which starts at 14, a = 14, and with a common difference of -1, d = -1. We can use the nth term formula an = a + (n - 1)d to get an = 14 + (n - 1)(-1) = 14 - n + 1 = 15 - n.
It is: 2n+9
The nth term is: 2n+7 and so the next number will be 19
2n + 1
The nth term is 2n+5 and so the next number is 17
The nth term in this sequence is 4n + 3.
It is: nth term = 29-7n
If you mean: 15 11 7 3 then the nth term is 19-4n
It is: nth term = 5-4n and so the next term will be -19
Assuming the pattern would continue: 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13...
The nth term is 4n-1 and so the next term will be 19
The nth term is 18 -3n and so the next term will be 3