【简答题】Mrs. Green is going to give a birthday party for her daughter Jenny. Jenny is going to be twelve years old. A lot of Jenny’s friends are going to come to the party. Mrs. Green is getting readay for t...
【单选题】Mrs. Green always helps her mother even though going to work _________most of her day.
【简答题】一组数据前3个数的平均数是8,中间4个数的平均数是6,后5个数的平均数是6,则这组数据的平均数是______.
【单选题】Mrs. White as well as her twins ______ the dancing club. [ ]
【简答题】若一组数据 的平均数为4,则数据 , , , 的平均数是 ▲ .
【单选题】George Bernard Shaw’s play Mrs. Warren’s Profession is about______.
B.
the economic oppression of women
C.
the political corruption in England
D.
the religious corruption in England
【简答题】一组数据前3个数的平均数是8,中间4个数的平均数是6,后5个数的平均数是6,则这组数据的平均数是( )。
【单选题】一组数据中每个数据都减去80构成一组新数据,这组新数据的平均数是1.2,方差是4.4,则原来这组数的平均数和方差分别是( )
【简答题】若一组数据2,3,5,a的平均数是3;数据3,7,a,b,8的平均数是5;数据a,b,c,9的平均数是5,则数据a,b,c,9的方差是( )。
【简答题】根据对话内容,补全对话,每空一词。 Mr. Shaw: Good afternoon. What can I do for you? Mrs. Clark: I'd like to 1 a washing machine. Mr. Shaw: This is the newest washing machine. Mrs. Clark: Is it 2 in Sweden? Mr. Shaw: N...