Top answers

Bob lives 2km away from Alice and the school is 1km away from Bob. Alice sets off to meet Bob at 8am and she meets him at 8:15 and they carry on walking at the same pace. School starts at 8:20. Do they get to school on time? How early/late are they?

Many pupils struggle when maths questions that are given in a very wordy format. I feel these types of questions can be the most useful in testing mathematical concepts that the pupils have picked up in less...
MK
Answered by Marcin K. • Maths tutor
4640 Views

Differentiate the function y=(6x-1)^7

Problems of this style are solved using the chain rule. To begin, define the quantity inside the brackets as u u = 6x-1 such that y = u^7 It is now useful to write the chain rule. We can see dy/dx = du/dx x ...
JL
Answered by Jamie L. • Maths tutor
5297 Views

Which A-level modules did you take?

C1, C2, C3, C4 M1, M2, M3 S1, S2, S3 FP1, FP2
MW
Answered by Michael W. • Maths tutor
5340 Views

What is completing the square and how do you do it?

Completing the square is just another way of solving a quadratic equation; It is useful if you cannot factorise the equation. When completing the square you want to end up with your equation in the format: (...
AA
Answered by Alexander A. • Maths tutor
4514 Views

Find the possible values of x when x^2+8x+15=0

In order to find the value of x we can first factorise the equation. To factorise a quadratic we put it in the form:(x+a)(x+b)=0When multiplying out this general term we get:x^2 + bx + ax + ab = 0This can be...
CB
Answered by Clare B. • Maths tutor
4588 Views