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Mathematics 10 Online
OpenStudy (anonymous):

PLEASE HELP! WILL GIVE BEST ANSWER

OpenStudy (anonymous):

What is the common difference of a 57-term arithmetic sequence where the first term is -25 and the sum is 17,727?

hartnn (hartnn):

use the formula : \(\huge S_{57}=(57/2)(2a+(57-1)d)\) with a = -25, and S = 17727

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