gr3a3celydic
gr3a3celydic
25-01-2017
Mathematics
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Find the nth term: 13, 20, 27, 34
Respuesta :
crisforp
crisforp
25-01-2017
The ratio, r, is 20 - 13 = 27 - 20 = 34 - 27 = 7;
The nth term has the formula: an = a1 + (n-1) x r; where, a1 = 13 and r = 7;
Then, an = 13 + (n-1) x 7;
Finally, an = 13 + 7 x n - 7;
an = 7 x n + 6;
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