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Mathematics 20 Online
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?

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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