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OpenStudy (anonymous):
PLEASE HELP I HAVE ONLY TILL 11:59 TO GET THESE QUESTIONS DONE. What is the common difference of a 57-term arithmetic sequence where the first term is -25 and the sum is 17,727? (1 points) Answer 11 11.5 12 12.5 What is the sum of a 14-term arithmetic sequence where the last term is 30 and the common difference is -5? (1 points) Answer 875 812.5 455 422.5
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