已知关于x,y的二元一次方程组
的解为
,若m,n满足二元一次方程组
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae26955caf3e251b1d5b095bbe521d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e63ff2b4867ad1646ec7d2fdcaa9d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f77ca8f64a87666b739dbc438fefa22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e486a69c94a6442bb2131452fd88996f.png)
A.0 | B.2 | C.4 | D.6 |
更新时间:2024-05-11 02:35:55
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【推荐2】如图,约定:上方相邻两数之和等于这两数下方箭头共同指向的数.有以下两个结论,结论Ⅰ:若
的值为5,则
的值为4;结论Ⅱ:不论
取何值,
的值一定为3.下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.Ⅰ,Ⅱ都对 | B.Ⅰ对,Ⅱ不对 | C.Ⅰ不对,Ⅱ对 | D.Ⅰ,Ⅱ都不对 |
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