Mathematics, 26.05.2021 17:30 lachlyn40

what is the sum of the first 25 terms of an arithematic sequence if the sum of its 8th and 18th terms is 72?

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what is the sum of the first 25 terms of an arithematic sequence if the sum of its 8th and 18th term...

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what is the sum of the first 25 terms of an arithematic sequence if the sum of its 8th and 18th terms is 72?​

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what is the sum of the first 25 terms of an arithematic sequence if the sum of its 8th and 18th terms is 72?