SOLUTION: an arithmetic sequence is shown below . you are not given many terms of the sequence , but you do have enough to fill in the missing number . what number goes in the blank ? 14 ,

SOLUTION: an arithmetic sequence is shown below . you are not given many terms of the sequence , but you do have enough to fill in the missing number . what number goes in the blank ? 14 ,

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Question 1094571: an arithmetic sequence is shown below . you are not given many terms of the sequence , but you do have enough to fill in the missing number . what number goes in the blank ? 14 , ______ , 56
Answer by ikleyn(52788)   (Show Source): You can put this solution on YOUR website!
.
The missed term is the arithmetic mean of its neighbors:

x = = 35.

See the lesson
    - One characteristic property of arithmetic progressions
in this site.

There is a bunch of lessons on arithmetic progressions in this site:
    - Arithmetic progressions
    - The proofs of the formulas for arithmetic progressions
    - Problems on arithmetic progressions
    - Word problems on arithmetic progressions
    - Mathematical induction and arithmetic progressions
    - One characteristic property of arithmetic progressions
    - Solved problems on arithmetic progressions

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