Mathematics, 19.05.2021 15:40, cam1976
The sum of the first and 11th terms of an arithmetic sequence is 40, a) what is the sum of its 5th and 7th terms ? b) What is its 6th term? c) what is the sum of the first 11 terms of the sequence ?
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The sum of the first and 11th terms of an arithmetic sequence is 40, a) what is the sum of its 5th a...
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