a level的数学.1.Simplify (x^3+7^x2+5x-28)/(x+4)2.Factorise pletely x^3+5x^2-2x-243.Make r the subject of the formula 4.If ,find the value of y when x = 9 given that y = 24 when x = 4 .5.The probability that I oversleep on any given day is 1/10.If I oversleep,the probability that I am late for work is 4/5; if I do not oversleep,the probability that I am late for woa) Complete this tree diagram.b) What is the probability that I neither oversleep nor are late for work?_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _c) What is the probability that I am late for work _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ rk is only 1/5.那表格复制不上来 英语
网友回答
【答案】 这都是GCSE的EXtended level的题目,作为中国学生应该很简单啊.