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4.2.0

2.9×0.45+0.29×4.2+0.029×13 =2.9×0.45+2.9×0.42+2.9×0.13 =2.9×(0.45+0.42+0.13) =2.9×1 =2.9

首先找到共同的数是3.8其次将0.038*13转化为3.8*0.13,提取3.8之后3.8*0.45+0.38*4.2+0.038*13=3.8*0.45+3.8*0.42+3.8*0.13=3.8*(0.45+0.42+0.13)=3.8*1=3.8 752×1.25+4.45×12.5+0.035×125=752×1.25+44.5×1.25+3.5×1.25=1.25×(752+44.5+3.5)=...

打开Eclipse help->Software Updates->find and install(如果没有这个就用help->Software Updates->Add/Remove Software即可) 选择search for new features to install, Next 点击new remote site 输入name:subclipse 1.6.x,url:http://subcl...

见图

1.1 命令lsb_release -a lsb_release提供特定的LSB (Linux Standard Base)和发布版本相关信息。 ubuntu中运行lsb_release -a的结果如下: 1.2 命令cat /etc/issue /etc目录下放的是系统的配置文件。 /etc/issue文件通常包括系统的一段短说明或欢...

4.2÷0.2竖式表示 解 算式如下: 4.2÷0.2 =4.2×5 =21

4.2除以0.3等于(14),竖式如图:

4.2x0.2÷0.42x0.2 =4.2÷0.42x0.2x0.2 =10x0.2x0.2 =2x0.2 =0.4 谢谢,请采纳

4.2÷0.42 =(4.2X100)÷(0.42X100) =420÷42 =42X10÷42 =10

4.2÷0.06 =4.2÷6/100 =4.2×100/6 =0.7×100 =70

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