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This question might look hard but can be easily answered by breaking it down into steps and remembering a few key things. The first step is to recognise that the question is mentioning a stationary point ...

This question is asking us to make x the subject, so we’re aiming to end up with just x on its own on one side of the equation. Firstly, we need to get rid of the x on the bottom of the right-hand side, s...

What you're looking for is to be as analytic and succinct as possible. A lot of people struggle to not just describe events and tell a story. What's more important are your judgements and those of histori...

Taking a sample survey is quicker, cheaper and easier to carry out than a census. 

A co-ordinate clause has equal importance to a main clause. For example, in "I ate a sandwich and Johnny ate pasta", the co-ordinating clause "Johnny ate a pasta" would make sense on i...