SOLUTION: The first term of an arithmetic sequence is -5, and the tenth term is 13. What is the common difference.8/9,1.8,or 2?
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Question 582993: The first term of an arithmetic sequence is -5, and the tenth term is 13. What is the common difference.8/9,1.8,or 2? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The first term of an arithmetic sequence is -5, and the tenth term is 13. What is the common difference.8/9,1.8,or 2?
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Formula: a(n) = a(1)+(n-1)d
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a(1) = -5
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a(10) = -5 + 9d
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13 = -5+9d
9d = 18
d = 2
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Cheers,
Stan H.
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