SOLUTION: What is the arithmetic mean an of the given terms An-1=4,an+1=12

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Question 1028777: What is the arithmetic mean an of the given terms
An-1=4,an+1=12
Answer by ikleyn(52903) About Me  (Show Source):
You can put this solution on YOUR website!
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What is the arithmetic mean an of the given terms
An-1=4,an+1=12
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According to this article of Wikipedia


   In mathematics and statistics, the arithmetic mean, or simply the mean or average when the context is clear, 
   is the sum of a collection of numbers divided by the number of numbers in the collection.


Based on this, the arithmetic mean in your case is %284%2B12%29%2F2 = 16%2F2 = 8.