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OpenStudy (anonymous):
Please help it is so simple Find the 13th term of the arithmetic sequence $1200, $964.32, $728.64, …
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OpenStudy (anonymous):
Why is people so scared of arithmetic? everytime I post this people leave?
OpenStudy (anonymous):
It goes down by 235.68 each time
OpenStudy (anonymous):
THat helps
OpenStudy (anonymous):
tn=t1+(n-1)d is the formula
jimthompson5910 (jim_thompson5910):
tn = t1 + (n-1)*d tn = 1200 + (n-1)*(-235.68) tn = 1200 - 235.68n + 235.68 tn = 1435.68 - 235.68n tn = -235.68n + 1435.68 So the nth term is tn = -235.68n + 1435.68 This is assuming n starts at n = 1
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OpenStudy (anonymous):
Nice
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