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Some number x is added to 7 for every number in the sequence. So, the second number is 7+x, the third number is 7+2x... So the tenth number is 7+9x = 34. Solve for x, x=3. The fifth number is 7+4x, which is 7+(4*3), which is 19

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Q: The first term of an arithmetic sequence 7 the tenth term is 34 what is the fifth term?
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