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An = -2 + 3/2 (n-1)
What is the 21st term of the sequence?​

User Alessia
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1 Answer

5 votes

Answer:


a_(n) = -83/40

Explanation:

Given


a_(n) = -2 + 3/2 (n-1)

In this problem to find 21st term we put 21 in place of n in the equation


a_(n) = -2 + 3/2 (21-1) = \\a_(n) = -2 + 3/2 (20)\\a_(n) = -2 + 3/40 = (-2*40 +3)/40 \\a_(n) = -83/40\\

Thus, 21st term is -83/40.

User Bjunc
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