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What invention made cotton production profitable? Question 23 options: canals cotton gin barbed wire steel plow
asked
Mar 19, 2019
History
middle-school
2
answers
2
votes
51.0k
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F(x)=3x^2-2x, find f(a+1) a) 3a^2-2a+1 b) 3a^2+4a+1 c) 3a^2-2a+2 d) 3a^2-4a+4
asked
Oct 4, 2018
Mathematics
high-school
1
answer
2
votes
184k
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