<PRE><B>Question 942577</B>
write a formula for the general term(the nth term) of each arithmetic sequence. Then use the formula for An to find A20.the 20th term of the sequence, 1,5,9,13....
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d = 5-1 = 4
a(1) = 1
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a(20) = a(1)+19*d
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a(20) = 1 + 19*4 = 77
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Cheers,
Stan H.
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