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My first tips would be to:

• Avoid any cliché sentences. Do not use hyperbole to describe your passions as this will come across as insincere. Instead, demonstrate your enthusiasm by engagi...

This question wants us to find: dh/dt. We are given: dV/dt=80π and V=4πh(h+4). The equation to use here is: dh/dt = dh/dV x dV/dt. We kn...

Since we have to differentiate a fraction, we must use the quotient rule. 

The quotient rule: If y = u/v, dy/dx = (vdu/dx - udv/dx)/v²

So we must work out each of the ter...

In English, the subjunctive is used to express wishes or hypothetical situations, e.g. I wish you were nicer to me ('were' is in the subjunctive). In French, it's fairly similar. The subjunctive is associ...

2x + y = 7

3x - y = 8

You cannot find x and y using only one equations, but using both you can! So first you have use algebra to make both equations = y. Try this for the first equation by r...