Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -20.945n2+1.59n3+1664.5179-1151.86n ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -20.945 * n * 2 + 1.59 * n * 3 + 1664.5179 - 1151.86 * n ≥0         (1)

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    From inequality(1)：
         n ≤ 1.399954

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    The final solution set is :
         n ≤ 1.399954

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