alevel的数学.1.Simplify(x^3+7^x2+5x-28)/(x+4)2.Factorisecompletelyx^3+5x^2-2x-243.Makerthesubjectoftheformula4.If,findthevalueofywhenx=9giventhaty=24whenx=4.5.TheprobabilitythatIoversleeponanygivendayis1/10.

Question

a level的数学
.1.Simplify (x^3+7^x2+5x-28)/(x+4)
2.Factorise completely x^3+5x^2-2x-24
3.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

Answer 1

这都是GCSE的EXtended level的题目,作为中国学生应该很简单啊.