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There are 2 ways to solve simultaneous equations which are by substitution or elimination. In this example you can use both but elimination is simpler. So we have 2x + 7y = 14 and x + y = 2. To use elimin...

With the methods we know at A Level we cannot current differentiate x^x in its current form. Therefore let y = x^xTo turn it into a form we can differentiate we take the natural log o...

This question is an example of compound interest rates. The question asks to find the interest rate of the bank. So first of all we should form an equation relating our initial amount, interest rate, time...

The key to answering this question is to separate the velocity of the ball into two components - horizontal and vertical components. The vertical component will be affected by the gravitational accelerati...

Management accountingcollecting and analysing internal information which are used by internal stakeholders such as managers. This help them with decision making to help them achiev...