10.
如图,在△ABC与△A′B′C′中,AB=A′B′,∠A=∠A′,要说明△ABC≌△A′B′C′,还需要增加一个条件,下列条件中不符合的是( )
| A. | ∠B=∠B′ | B. | ∠C=∠C′ | C. | AC=A′C′ | D. | CB=C′B′ |
8.某班去看演出,甲种票每张24元,乙种票每张18元,如果35名学生购票恰好用去750元,甲、乙两种票各买了多少张?设买了x张甲种票,y张乙种票,则所列方程组正确的是( )
| A. | $\left\{\begin{array}{l}x+y=35\\ 18x+24y=750\end{array}\right.$ | B. | $\left\{\begin{array}{l}x+y=35\\ 24x+18y=750\end{array}\right.$ | ||
| C. | $\left\{\begin{array}{l}x-y=35\\ 24x-18y=750\end{array}\right.$ | D. | $\left\{\begin{array}{l}x-y=35\\ 18x-24y=750\end{array}\right.$ |
7.平面直角坐标系,第四象限内一点P到x轴的距离为2,到y轴的距离为5,那么点P坐标是( )
| A. | (2,-5) | B. | (-5,2) | C. | (-2,5) | D. | (5,-2) |
6.下列各数中:$\frac{22}{7}$,0,π,$\root{3}{-8}$,$\root{3}{9}$,0.32,($\sqrt{3}$)0,$\frac{\sqrt{3}}{4}$,0.1010010001…中,无理数个数有( )
| A. | 3个 | B. | 4个 | C. | 5个 | D. | 6个 |
5.在下列几组数中,能作为直角三角形三边的是( )
0 292648 292656 292662 292666 292672 292674 292678 292684 292686 292692 292698 292702 292704 292708 292714 292716 292722 292726 292728 292732 292734 292738 292740 292742 292743 292744 292746 292747 292748 292750 292752 292756 292758 292762 292764 292768 292774 292776 292782 292786 292788 292792 292798 292804 292806 292812 292816 292818 292824 292828 292834 292842 366461
| A. | 0.9,1.6,2.5 | B. | $\frac{1}{3}$,$\frac{1}{4}$,$\frac{1}{5}$ | C. | 32,42,52 | D. | $\sqrt{2}$,$\sqrt{3}$,$\sqrt{5}$ |