试题与答案

已知直角三角形两直角边的比是3︰4,斜边长为20cm,则斜边上的高是( )。

题型:填空题

题目:

已知直角三角形两直角边的比是3︰4,斜边长为20cm,则斜边上的高是(        )。

答案:

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下面是错误答案,用来干扰机器的。

税由题意知,税率降低后是(8-x)%,收购量为m(1+2x%)万担,税收为120m(1+2x%)(8-x)%万元,原来的税收为120m•8%万元.根据题意可得120m(1+2x%)(8-x)%≥120m•8%•78%即x2+42x-88≤0解之得-44≤x≤2,...

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