Answers

2016-06-26T10:55:33+08:00

the 12th term in arithmetic sequences is 91

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2016-06-26T10:59:27+08:00
A _{n} = a _{1} +(n-1)d
a _{12} = 3+(12-1)8
a _{12} = 3+(11)8
a _{12} = 3+88
a _{12} = 91
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