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09-10-2018
Mathematics

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tell whether in the sequence is arithmetic if it is what is the common difference 20,11,2,-7

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09-10-2018

The sequence 20 , 11 , 2 , -7 is an arithmetic sequence.

The common difference is (20 - 11) = (11 - 2) = (2 - -7) = 9

The common difference is 9.

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