计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d4e3dfa992516a69a7e8e23caaa9fd.png)
更新时间:2020-10-07 16:58:33
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解答题-问答题
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较易
(0.85)
【推荐1】(1)将
个不同的数分别填入图中的
个空格中,使得每行、每列及对角线上各数的和都等于
;
(2)将
个不同的数分别填入图中的
个空格中,使得每行、每列及对角线上各数的积都等于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://img.xkw.com/dksih/QBM/2023/2/28/3184374957473792/3205213953097728/STEM/82eea4759b4d4d76bd02d055e66b131a.png?resizew=120)
您最近一年使用:0次
解答题-问答题
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较易
(0.85)
【推荐2】已知
、
互为相反数,
、
互为倒数,
的绝对值和倒数都是它本身,求代数式
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782d74afe778e6fa91b9d796f02273b1.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】为了有效遏制酒后驾车行为,区交警大队的一辆警车在城区大学路上巡逻,如果规定向东为正,向西为负,在某段时间内,这辆警车从出发点开始所走的路程为:
,
,
,
,
,
,
,
(单位:千米)
(1)巡逻结束时,这辆警车在出发点的哪个方向?距离出发点多远?
(2)如果每千米耗油0.2升,在这段时间内巡逻共耗油多少升?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6489852d310f01375f213b3bdf0406c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4f47d27d32b7f205cd916f49623f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e22e1223baf7cb3d53e668c2449609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21383e21a15b343a49925ad7753630d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c5f697359886700a47bc94bebae8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(1)巡逻结束时,这辆警车在出发点的哪个方向?距离出发点多远?
(2)如果每千米耗油0.2升,在这段时间内巡逻共耗油多少升?
您最近一年使用:0次