某市高三数学抽样考试中,对90分以上
(含90分)的成绩进行统计,其频率分布图
如图所示,若130—140分数段的人数为90人,
则90—100分数段的人数为_______
__810
把十进制数51化为二进制数为 。
She admitted that she had hidden the evidence because she loved him and wanted to him trouble.
A.keep;out
B.keep;out of
C.keep;up
D.keep;into