练习册

  • 练习册
  • 试题
    26． 解:(1)(元) ········································································· 1分 所以一个书包的价格是30元． ··············································································· 2分 (注:用其它方法解出正确答案也给予相应的分值) (2)设还能为x 名学生每人购买一个书包和一件文化衫.根据题意得:····················· 3分 -- 4分 解之得: 所以不等式组的解集为: ·························································· 5分 ∵x为正整数. ∴x=30 ················································································································ 6分 答:剩余经费还能为30名学生每人购买一个书包和一件文化衫．···························· 7分 【查看更多】

     

    题目列表(包括答案和解析)

    （本题满分5分）

    解方程：．

     

    查看答案和解析>>

    （本题满分10分）解一元二次方程：
    【小题1】（1）（x+1）2="3               "           【小题2】（2）3y2+4y+1=0

    查看答案和解析>>

    （本题满分6分）解二元一次方程组：

     

    查看答案和解析>>

    （本题满分6分）解方程：.

     

    查看答案和解析>>

    （本题满分10分）解方程组：

    （1）          

                  

    （2）    

     

    查看答案和解析>>


    同步练习册答案