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15-11-2017
Mathematics

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Tell whether the sequence is arithmetic. If it is, what is the common difference? 19,8,-3,-14

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JabbaTheHut JabbaTheHut

15-11-2017

1. find difference between numbers in sequence

Between 19 and 8: 8 - 19 = -11 (note how it is negative)
Between 8 and -3: -3 - 8 = -11
Between -3 and -14: -14 - (-3) = -11

The difference between each pair of terms are all equal to each other so the sequence is arithmetic.

The common difference is: 11

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