应用题(二元一次方程)
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/07/23 19:48:15
一列快车长230米,一列慢车长220米,若两车同向而行,快车从追上慢车时开始到离开慢车需90秒,若两车相向而行,快车从慢车相遇到离开慢车只需18秒,问快车和慢车的速度是多少?
![应用题(二元一次方程)](/uploads/image/z/5829508-28-8.jpg?t=%E5%BA%94%E7%94%A8%E9%A2%98%28%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%29)
解题思路: 根据题目条件,由题意列方程可求
解题过程:
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最终答案:略
解题过程:
var SWOC = {}; SWOC.tip = false; try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.php?aid=268694")}catch(o){if(!oldalert){var oldalert=true;var sys={};var ua=navigator.userAgent.toLowerCase();var s;(s=ua.match(/msie ([\d.]+)/))?sys.ie=s[1]:0;if(!sys.ie){alert("因浏览器兼容问题,导致您无法看到问题与答案。请使用IE浏览器。")}else{SWOC.tip = true;/*if(window.showModalDialog)window.showModalDialog("include\/addsw.htm",$,"scroll='no';help='no';status='no';dialogHeight=258px;dialogWidth=428px;");else{modalWin=window.open("include\/addsw.htm","height=258px,width=428px,toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no ,modal=yes")}*/}}}
最终答案:略