本课配套习题挑战模式1/5
单选题
难度系数:
1.据调查,2011年5月某市的房价均价为7600/m2,2013年同期将达到8200/m2,假设这两年该市房价的平均增长率为x,根据题意,所列方程为( )
A: 7600(1+x%)2=8200 |
B: 7600(1-x%)2=8200 |
C: 7600(1+x)2=8200 |
D: 7600(1-x)2=8200 |
一次做对,真牛!
+5奖励规则>
- 提示1:IDIwMTPlubTnmoTmiL/ku7c4MjAwPTIwMTHlubTnmoTmiL/ku7c3NjAww5fvvIgxK+W5tOW5s+Wdh+WinumVv+eOh++8iTxzdXA+Mjwvc3VwPu+8jOaKiuebuOWFs+aVsOWAvOS7o+WFpeWNs+WPry4=
- 答案:Qw==
6Kej77yaMjAxMuW5tOWQjOacn+eahOaIv+S7t+S4ujc2MDDDl++8iDEreO+8ie+8jDxicj4yMDEz5bm055qE5oi/5Lu35Li6NzYwMO+8iDEreO+8ie+8iDEreO+8iT03NjAw77yIMSt477yJPHN1cD4yPC9zdXA+77yMPGJyPuWNs+aJgOWIl+eahOaWueeoi+S4ujc2MDDvvIgxK3jvvIk8c3VwPjI8L3N1cD49ODIwMO+8jDxicj7mlYXpgIlDLiA=
本课配套习题挑战模式2/5
单选题
难度系数:
2.某种药品原价为36元/盒,经过连续两次降价后售价为25元/盒. 设平均每次降价的百分率为x,根据题意所列方程正确的是( )
A: 36(1-x)2=36-25 |
B: 36(1-2x)=25 |
C: 36(1-x)2=25 |
D: 36(1-x2)=25 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWPr+WFiOihqOekuuWHuuesrOS4gOasoemZjeS7t+WQjueahOS7t+agvO+8jOmCo+S5iOesrOS4gOasoemZjeS7t+WQjueahOS7t+agvMOX77yIMS3pmY3kvY7nmoTnmb7liIbnjofvvIk9MjXvvIzmiornm7jlupTmlbDlgLzku6PlhaXljbPlj6/msYLop6Mu
- 答案:Qw==
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本课配套习题挑战模式3/5
单选题
难度系数:
3.一个两位数,十位数字与个位数字之和是6,把这个数的个位数字与十位数字对调后,所得的新两位数与原来的两位数的积是1008,求这个两位数( )
A: 42 |
B: 24 |
C: 42或24 |
D: 36 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWPr+iuvuS4quS9jeaVsOWtl+S4uuacquefpeaVsO+8jOWIqeeUqOS4pOS4quaVsOWtl+WSjOS4ujbooajnpLrlh7rljYHkvY3mlbDlrZfvvIzmoLnmja7mlrDkuKTkvY3mlbDDl+WOn+adpeeahOS4pOS9jeaVsD0xMDA45YiX5pa556iL5rGC5b6X5Liq5L2N5LiK55qE5pWw5a2X5Y+K5Y2B5L2N5LiK55qE5pWw5a2X77yM5YaN5rGC5Y6f5p2l55qE5Lik5L2N5pWw5Y2z5Y+vLg==
- 答案:Qw==
6Kej77ya6K6+5Y6f5Lik5L2N5pWw55qE5Liq5L2N5pWw5a2X5Li6eO+8jOWNgeS9jeaVsOWtl+S4uu+8iDYteO+8ie+8jDxicj7moLnmja7popjmhI/lj6/nn6XvvIxbMTDvvIg2LXjvvIkreF1bMTB4K++8iDYteO+8iV09MTAwOO+8jDxicj7ljbN4PHN1cD4yPC9zdXA+LTZ4Kzg9MO+8jDxicj7op6Plvpd4PHN1Yj4xPC9zdWI+PTLvvIx4PHN1Yj4yPC9zdWI+PTTvvIw8YnI+4oi0Ni14PTTvvIzmiJY2LXg9Mu+8jDxicj7iiLQxMO+8iDYteO+8iSt4PTQy5oiWMTDvvIg2LXjvvIkreD0yNO+8jDxicj7nrZTvvJrov5nkuKrkuKTkvY3mlbDmmK80MuaIljI0LiA=
本课配套习题挑战模式4/5
单选题
难度系数:
4.目前我国建立了比较完善的经济困难学生资助体系. 某校去年上半年发放给每个经济困难学生389元,今年上半年发放了438元,设每半年发放的资助金额的平均增长率为x,则下面列出的方程中正确的是( )
A: 438(1+x)2=389 |
B: 389(1+x)2=438 |
C: 389(1+2x)2=438 |
D: 438(1+2x)2=389 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWFiOeUqOWQq3jnmoTku6PmlbDlvI/ooajnpLrljrvlubTkuIvljYrlubTlj5HmlL7nu5nmr4/kuKrnu4/mtY7lm7Dpmr7lrabnlJ/nmoTpkrHmlbDvvIzlho3ooajnpLrlh7rku4rlubTkuIrljYrlubTlj5HmlL7nmoTpkrHmlbDvvIzku6TlhbbnrYnkuo40MzjljbPlj6/liJflh7rmlrnnqIsu
- 答案:Qg==
6Kej77ya6K6+5q+P5Y2K5bm05Y+R5pS+55qE6LWE5Yqp6YeR6aKd55qE5bmz5Z2H5aKe6ZW/546H5Li6eO+8jOWImeWOu+W5tOS4i+WNiuW5tOWPkeaUvue7meavj+S4que7j+a1juWbsOmavuWtpueUnzM4Oe+8iDEreO+8ieWFg++8jOS7iuW5tOS4iuWNiuW5tOWPkeaUvue7meavj+S4que7j+a1juWbsOmavuWtpueUnzM4Oe+8iDEreO+8iTxzdXA+Mjwvc3VwPuWFg++8jDxicj7nlLHpopjmhI/vvIzlvpfvvJozODnvvIgxK3jvvIk8c3VwPjI8L3N1cD49NDM4LiA8YnI+5pWF6YCJQi4g
本课配套习题挑战模式5/5
单选题
难度系数:
5.某机械厂七月份生产零件50万个,第三季度生产零件196万个. 设该厂八、九月份平均每月的增长率为x,那么x满足的方程是( )
A: 50(1+x2)=196 |
B: 50+50(1+x2)=196 |
C: 50+50(1+x)+50(1+x)2=196 |
D: 50+50(1+x)+50(1+2x)=196 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOS4u+imgeiAg+afpeWinumVv+eOh+mXrumimO+8jOS4gOiIrOWinumVv+WQjueahOmHjz3lop7plb/liY3nmoTph4/Dl++8iDEr5aKe6ZW/546H77yJ77yM5aaC5p6c6K+l5Y6C5YWr44CB5Lmd5pyI5Lu95bmz5Z2H5q+P5pyI55qE5aKe6ZW/546H5Li6eO+8jOmCo+S5iOWPr+S7peeUqHjliIbliKvooajnpLrlhavjgIHkuZ3mnIjku73nmoTkuqfph4/vvIznhLblkI7moLnmja7popjmhI/lj6/lvpflh7rmlrnnqIsu
- 答案:Qw==
6Kej77ya5L6d6aKY5oSP5b6X5YWr44CB5Lmd5pyI5Lu955qE5Lqn6YeP5Li6NTDvvIgxK3jvvInjgIE1MO+8iDEreO+8iTxzdXA+Mjwvc3VwPu+8jDxicj7iiLQ1MCs1MO+8iDEreO+8iSs1MO+8iDEreO+8iTxzdXA+Mjwvc3VwPj0xOTYuIDxicj7mlYXpgIlDLiA=