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posted by Lucia on Tuesday, February 19, 2013 at 3:15pm.
Find the arithmetic sequence if the fourth term is -6 and the eleventh term is -34
The (n+1)st term is a+nd a+3d=-6 a+10d = -34 subtract to get 7d = -28 having d, now you can get a, since a+3d = -6
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