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OpenStudy (anonymous):
some one please help What is the sum of the first seven terms of an arithmetic sequence if its first and second terms are 5 and 8?
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OpenStudy (anonymous):
first find 7th term by using formula a7 = a1 + (n - 1)*d here d= 3 & n=7,a1= 5 So what would be the a7 = ---------?
OpenStudy (anonymous):
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