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rjkz [21]
2 years ago
11

What is the sum of the first 10 terms of the arithmetic sequence in which the 4th term is 10 and the 7th term is 19??

Mathematics
1 answer:
diamong [38]2 years ago
7 0
4th is 13 7th is 19 , that equals 6 difference, divide by two, 3 between each point. So now 3rd is 10, 2nd is 7, 1st is 4. Now add the first 10, 4+7+10+13+16+19+22+25+28+31=175
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