Hey, i really need help with some kinds of questions and appreciate greatly any help I can get! I got a real GCSE test coming up on Monday! (I live in the UK...) Thanks :)

Q1:Below is a rough graph that shows a circle of radius 5cm, centre the origin.

http://img242.imageshack.us/img242/4482/picture1zc6.jpg

Draw a suitable straight line on the diagram to find the estimates of the solutions of the pair of equations

x² + y² = 25

y = 2x + 1

x = _________ y = _________

x = _________ y = _________

Q2:Show that x² - 4x + 15 can be written as (x+p)² + q for all values of x. State the values of p and q.

p = __________

q = __________

Q3:The line y = 4 - 4x intersects the curve y = 3(x²-x) at the points A and B.

Use an algaebraic method to find the coordinates of A and B.

(___,___)

(___,___)

Q4:Prove algerbraically taht the sum of the squares of any two odd numbers leaves a remainder of 2 when divided by 4.

Q5:The table shows the number of students in each year group at a school.

http://img455.imageshack.us/img455/3849/picture1ll8.jpg

Jenny is carrying out a survey for her GCSE Mathematics project.

She uses a stratified sample of 60 students according to the year group.

Calculate the number of year 11 students that should be in her sample.

That's all for now folks :)

Thanks very much if you can help me out with my exams coming up :)

Please can you keep an eye on my topic? I may post a couple more questions i come accross..

Thank you very much! :)

Dan