11.
如图,已知AB∥CD∥EF,AD:AF=3:5,BE=12,那么CE的长等于( )
| A. | $\frac{36}{5}$ | B. | $\frac{24}{5}$ | C. | $\frac{15}{2}$ | D. | $\frac{9}{2}$ |
10.菱形的两条对角线长分别为6和8,则菱形的面积是( )
| A. | 10 | B. | 20 | C. | 24 | D. | 48 |
9.正六边形的每一个外角都是( )
| A. | 720° | B. | 360° | C. | 120° | D. | 60° |
7.
如图,数轴上表示某不等式组的解集,则这个不等式组可以是( )
| A. | $\left\{\begin{array}{l}{x≤-2}\\{x>4}\end{array}\right.$ | B. | $\left\{\begin{array}{l}{x<-2}\\{x≥4}\end{array}\right.$ | C. | $\left\{\begin{array}{l}{x>-2}\\{x≤4}\end{array}\right.$ | D. | $\left\{\begin{array}{l}{x≥-2}\\{x<4}\end{array}\right.$ |
6.一组数据2、5、5、5、8、8、9的众数是( )
0 304806 304814 304820 304824 304830 304832 304836 304842 304844 304850 304856 304860 304862 304866 304872 304874 304880 304884 304886 304890 304892 304896 304898 304900 304901 304902 304904 304905 304906 304908 304910 304914 304916 304920 304922 304926 304932 304934 304940 304944 304946 304950 304956 304962 304964 304970 304974 304976 304982 304986 304992 305000 366461
| A. | 2 | B. | 5 | C. | 8 | D. | 9 |