Search over 10,000 free study notes

1. Check whether student can calculate simple interest, e.g. How much money would you have after 1 year if you have £50 and get 3% interest? (Ans: 50*1.03 = 51.50)

2. Once this is un...

To factorise an equation entirely it is necessary to think of the commonality between all terms. In this case, not only 'x' is common in all the parts of the equation, but also '3'. Knowing this informati...

The sphere has radius Y, so the volume of the sphere is 4/3 (pi) Y³ , The volume is the same for the cyclinder so we know the volume of the cylinder in terms of Y. Cyclinder volume = area of ci...

Pythagoras's theorem is used to calculate the lengths of the sides of right-angled triangles. The theorem can be used to find the length of the third side of a right-angled triangle, as l...

By completing the square, since this makes you see that the square will always be >= 0 and the other part allows you to calculate the minima or maxima depending on the sign in front of x². E...