Top answers

The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5. Work out the area of the triangle.

So, working out the different side lengths of the triangle is going to help find the area at the end. We split the ratio up into 3s and show them as a proportion of the whole perimeter. For example, one side...
RG
Answered by Roberto G. • Maths tutor
9873 Views

‘Germany was treated fairly at Versailles.’ How far do you agree with this statement? Explain your answer.

In history, answers have less to do with the actual content and more to do with how essays are structured. I have therefore given the structure which I would provide to a student at GCSE level and explained ...
HJ
Answered by Henry J. • History tutor
3544 Views

How do you factorise a quadratic equation?

You should already be familiar with multiplying out brackets to arrive at a quadratic equation, which will look something like the following: (x + 2)(x + 3) = x 2 + 2x + 3x + 6 = x 2 + 5x + 6 Factorising is ...
EM
Answered by Eleanor M. • Maths tutor
3505 Views

When the current through an ohmic conductor is 2A, the potential difference across it is 6V. What is the potential difference across the same ohmic conductor when the current is increased to 3A?

To answer this, you need to pick up on the clues in the question. "Ohmic conductor" is explicitly mentioned twice, so this is likely to be important. You should know that for ohmic conductors, p.d....
EG
4007 Views

How do you find the original price of a sale item when a percentage decrease has been applied?

Let's use an example, for instance, a pair a trainers in the sale are advertised as having 25% off, and are now a price of £24. How would you find the original price of the trainers before the sale?Firstly, ...
EG
3742 Views