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An arithmetic sequence has a 10th term of 17 and a 14th term of 30. find the common difference

Sagot :

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ANSWER :

The common difference is 13/4.

STEP BY STEP EXPLANATION :

  • Linear sistem :

A1 + 13R = 30

A1 + 9R = 17 (-1)

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A1 + 13R = 30

-A1 - 9R = -17

__________________

4R = 13

R = 13/4

Therefore , the common difference is 13/4.

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