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Start by selecting a variable to eliminate from the equations. --> Select x in this case.Take the second equation and multiply by 2. --> 2x + 6y = 38Subtract the first equation from this answer. -->...

To tackle the turning points question it is important to compare the tuning point to other turning points of the period. In the introduction there are several key points that need to be addressed such as the...

When writing a long essay, it can be easy to waffle and go off topic. It's important all your points are relevant to the question. You can make sure of this by always linking your point back to the question ...

The first part of aerobic respiration is to convert glucose into pyruvate in a series of reactions known as glycolysis, which happens in the cytoplasm of cells. Glycolysis consumes 2 molecules of ATP and pro...

First, we notice how there is only an 'x 2 ' term and a number in this expression. Also notice that the number, 9, is a square number. Whenever you have an expression that looks like 'x 2 -(any square number...