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Is the following sequence arithmetic? If so, identify the common difference. 2.9, 2.7, 2.5, 2.3,
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Is the following sequence arithmetic? If so, identify the common difference. 2.9, 2.7, 2.5, 2.3,

User Zaffar
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Notice that 2.7 = 2.9 - 0.2; 2.5 = 2.7 - 0.2, and so on.  So the common difference is -0.2.
User Nazar
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7 votes
The common difference is -2
User Hendy Irawan
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