Mathematics, 12.02.2021 07:20, starfox5454

the first term of an arithmetic sequence is 17 and the 60th term is 194 and the 65 term is 209. the sum of the first 60 terms is 6330. What is the sum of the 20th and 30th terms?

first is brainliest!!!

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the first term of an arithmetic sequence is 17 and the 60th term is 194 and the 65 term is 209. the...