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This is a really common problem of knowing all the knowledge behind the question but still not getting the most marks you can. The best way to manage this is to simply learn the mark scheme; the questions...

The first step is to label the sides of the rectangle. The longest side is the 'length' - put an L next to this. The shorter side is the 'width' - put a W next to this. The second step is to multiply the ...

Historiography is a word used to describe the different ways historians have thought about an answer to an historical question. For example, one area of historical debate is Italian unification, and what ...

Well... chemistry is the study of very tiny particles (electrons, atoms, molecules). It would be very hard for us to work with, and make calculations with, a single particle. A 'mole' is just 6.022x10^23 ...

a) 5t + 17 = 2. We want to work out what t is. t = ?.To do this we need to get t on it's own, so first we move all the other numbers to equal t.We do this by subtr...