Search our library of Maths GCSE questions

Top answers

Maths

GCSE

Solve the simultaneous equations, 3x + y = 10 and x + y = 4.

Firstly we want to get both equations in terms of one variable.3x + y = 10y = 10 - 3
x + y = 4y = 4 - x
Make these two equations equal10 - 3x = 4 - x
Rearrange the numbers to one side and t...

Answered by Brenda L. • Maths tutor

3357 Views

Tom bought a full bag of coal. After one week the bag was 2/3 full. During the next week he used 1/4 of the remaining coal. How much is left?

This question is going to involve multiplying fractions. The question tells us that in the first week 1/3 of the coal was used, and 2/3 was left.Then in the second week the used 1/4 of the remainders, lea...

Answered by Brenda L. • Maths tutor

6273 Views

How do you apply the multiplication law of indices?

Use the following method :Xⁿx X^m=X^n+mexplained using worked solution:what is X³ x X⁴=Firstly write X³ and X⁴ individually X

Answered by Adeel I. • Maths tutor

2060 Views

How would I make S the subject of the formula in the equation V^2 = U^2 + 2AS

So the best way to solve subject of the formula questions is to try and separate the term you want to make the subject, in our case S, from the rest of the terms in the e...

Answered by Joshua R. • Maths tutor

5880 Views

Solve the simultaneous equations: 4x + 2y = 26 and 3x + 3y = 21

Let eq 1 = 4x + 2y = 26 eq 2 = 3x + 3y = 21 Using the elimination method: You need to make either the xs or ys have the same constant term in both equations( sign does no...

Answered by Dermot N. • Maths tutor

3498 Views