解分式方程:
考点分析:
相关试题推荐
如图,在▱ABCD中,将△ABD沿对角线BD对折,得到△A′BD.请在图中用直尺和圆规按题意完成作图(不写作法,保留作图痕迹),并证明:∠A′=∠C.
查看答案
解不等式组:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037476595/SYS201310221604160374765017_ST/0.png)
,并将其解集在数轴上表示出来.
查看答案
先化简,再求值:(a+b)(a-b)+b(b-2),其中a=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037476595/SYS201310221604160374765016_ST/0.png)
,b=-1.
查看答案
⊙O上有两点A、B,∠AOB是小于平角的角,将∠AOB绕着圆心O旋转,当点B旋转到A时,点A旋转到C,如果点C和旋转前的点B关于圆心O成中心对称,则∠AOB=( )
A.45°
B.60°
C.90°
D.135°
查看答案
随意转动图中两转盘上的指针,指针静止在如图所示的情形时(即蓝色和绿色相配)的概率为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037476595/SYS201310221604160374765014_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037476595/SYS201310221604160374765014_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037476595/SYS201310221604160374765014_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037476595/SYS201310221604160374765014_ST/2.png)
D.
查看答案