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fomenos
3 years ago
13

Given this arithmetic sequence, what is a7? 2,4,6,8

Mathematics
1 answer:
frozen [14]3 years ago
3 0
a_1=2 \\ a_2=4 \\ d=a_2-a_1=4-2=2 \\  \\ a_n=a_1+d(n-1) \\ a_7=2+2(7-1) \\ {} \ \ \ =2+12 \\ {} \ \ \ \boxed{=14}


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