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OpenStudy (anonymous):
What is the 20th term of the arithmetic sequence 3, -3, -9, … ?
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OpenStudy (anonymous):
I guess you need to calculate 3 - ( 19 * 6 )=-111. The first term is 3 and than you always subtract 6. So because you start with 3 you need to do this 19 times do get to the 20th term.
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