find the arithmetic mean A_n-1_-3.9, A_n+1

find the sum of the arithmetic sequence 52,48,44,...,-12,-16,-20

1) find n of the arithmetic sequence A1 = -5, An = 63, d = 2 2) Find the common ratio in the geom...

Find the first arithmetic mean between 100 and 135 given the following sequence: ..., 100, ___, ___...

Find the sum of the arithmetic series -12-9-6-...39.

Find the first arithmetic mean between 100 and 135 given the following sequence: ..., 100, ___,...

find the sum of the arithmetic series 7+4+1+....+(32).

Find the arithmetic mean of 4 and 18

find the arithmetic mean of a_n a_(n-1) = 8 and a_(n+1)=- 3

Find S12 for the arithmetic sequence 6,8,10,12,14,16,….

Find S12 for the arithmetic sequence 7,5,3,1,−1,−3,…. S12=

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