SOLUTION: Find the nth term and the indicated term of the arithmetic sequence {an} whose initial term, a, and common difference, d, are given. a1=0; d=1/3 an=?; a20=? A. an=1/3(n+1);a20

Question 1059672: Find the nth term and the indicated term of the arithmetic sequence {an} whose initial term, a, and common difference, d, are given.
a1=0; d=1/3
an=?; a20=?
A. an=1/3(n+1);a20=7
B. an=3(n-1); a20= 19
C. an=1/3n; a20=20/3
D. an=1/3(n-1);a20=19/3
Found 2 solutions by Fombitz, ikleyn:
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!

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Answer by ikleyn(52787)   (Show Source): You can put this solution on YOUR website!
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On arithmetic progressions see introductory lessons
    Arithmetic progressions
    The proofs of the formulas for arithmetic progressions
    Problems on arithmetic progressions
    Word problems on arithmetic progressions
in this site.

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