Top answers

Maths
GCSE

​What's the difference between the mean, median and mode? Why are there so many different types of average?!

The average we're all familiar with is called the mean average - "add them all together and divide by how many there are", but sometimes another type of average makes more sense.As an example, c...

JH
Answered by John H. • Maths tutor
14149 Views

How would I solve this set of simultaneous equations using the elimination method?

Solve the following equations for x and y:

x + 2y = 4

2x + 3y = 7

We are going to solve this using the elimination method. This means that we are going to eith...

JU
Answered by Jasmine U. • Maths tutor
4397 Views

How do you work out the old price of an item having been given the new price after a specified percentage change?

These problems can be worked out using the equation:
new = old x multiplier

Where:
new: is the new price of an item
old

RT
Answered by Rachael T. • Maths tutor
27124 Views

How do you go about rearranging equations where the required subject appears on both sides? Such as making x the subject of 7x + a = 3x + b.

To rearrange any equation, you must always do the same to both sides.
If you take a number from one side, you must also take it from the other. If you divide a side by one number you must divide ...

RT
Answered by Rachael T. • Maths tutor
21175 Views

How do i solve a system of 2 equations?

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