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OpenStudy (anonymous):
What is the 43rd term of an arithmetic sequence with a rate of increase of -6 and a11 = 12?
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OpenStudy (anonymous):
d=-6, a11=12 \[a11=a1+(11-1)d=a1+10(-6)\]
OpenStudy (anonymous):
a1-60=12 find a1 \[a43=a1+42d=a1+42(-6)\]
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