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Remeber to make your point first, ensure that the marker knows exactly what you are going to be talking about in that paragraph. Once you have made this point keep referring back to it as you write your para...

Depending on what you prefer, you can either substitute or you can try to solve this by elimination. I'll explain both. 1) x - 2y = 1 2) x 2 - xy +y 2 = 1 If solving by elimination, you need to start thinkin...

A sequence means a pattern, so the first thing to do is find the pattern. First try seeing what the difference between the numbers is. 15-7=8, 8-7=1, 1-7=6, so the pattern must be to subtract 7 each time. Th...

To find the derivative of any number to the power "x", such as 2 x , 5 x , or even 4.13 x , we first consider the general form a x . We need to be a little creative here. We know that any variable ...

diffusion is the movement of particles from a high concentration to a low concentration through a semi permeable membrane. an example would be the movement of food molecules through the gut wall as they pass...