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I think this is much easier than people think; you use this when you're speaking in English. When you say "I wish I had done this", "He talks to me as if I was a fool", "I wish I ...

With every letter it is important to identify what is the aim of your writing. There are many types of writing used in letters but in the circumstance of writing to someone you do not know, it is most com...

Solving a pair of simultaneous equations should ALWAYS begin in labelling each equation. I would go about labelling the first equation (1) and the second (2). A quadratic simulataneous equation question i...

As humans breathe in, the ribcage moves upwards and outwards. As this happens, the diaphragm flattens and moves down. This allows air to move into the lungs causing an increase in volume within the lungs....

(i): 15x^(2)+7 --- in order to arrive at this answer, we can divide the equation into 3 separate parts: 5x^(3) and 7x and 3. For the first part, you would multiply the first number, 5 by the power, in thi...