SOLUTION: The difference between the tenth term and the seventh term of an arithmetic sequence is -60. The twelfth term divided by the sixth term is 2. Find the first term and the common dif
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Question 1036199: The difference between the tenth term and the seventh term of an arithmetic sequence is -60. The twelfth term divided by the sixth term is 2. Find the first term and the common difference.
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
From the given, and .
The first equation becomes ==> 3d = -60 ==> d = -20.
The second equation becomes .
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