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OpenStudy (anonymous):
Which is the 25th term of the arithmetic sequence where a1 = 7 and a9 = 55 ?
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OpenStudy (muhammad_nauman_umair):
AS a9=a1+8d as a1=7;a9=55 so d=(a9-a1)/8 so d=6 as a25=a1+24d a25=7+24(6) a25=151
OpenStudy (anonymous):
thanks for your help!! :)
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