Top answers

Make b the subject of the formula a = 3 - 2b

So this question wants you to rearrange the formula so that b is on its own on one side of the equals sign. As its a formula and not asking for the value of the equation you don't have to worry about solving...
CB
Answered by Calum B. • Maths tutor
14782 Views

A shop sells bags of crisps in different size packs. There are 18 bags of crisps in a small pack (£4), 20 bags of crisps in a medium pack (£4.99) and 26 bags of crisps in a large pack (£6). Which size pack is the best value for money?

You can use the price of each pack and divide it by the number of bags of crips to get the price per packet, the one with the lowest price per packet will be the best value for money. The small packet cost £...
KG
Answered by Kahina G. • Maths tutor
14866 Views

How many solutions are there to the equation sin x = a, if 0<a<1 and 0<x<pi

Draw the sine graph on a whiteboard. Infer graphically by drawing the line y = a. As 0
VN
Answered by Vedanth N. • Maths tutor
4177 Views

Simplify the following C4 question into it's simplest form: (x^4-4x^3+9x^2-17x+12)/(x^3-4x^2+4x)

x + 3x -1 + 2(x-2) -1 - 1(x-2) -2
PC
Answered by Pierce C. • Maths tutor
4443 Views

What is the sum of the infinite geometric series 1 + 1/3 + 1/9 +1/27 ...?

An infinite geometric series is of the form a*(1 + b + b^2 + b^3 ...) To find the sum of all the terms in this series we consider the sum, S, where: S= 1 + b + b^2 + b^3 ... + b^n where n is some finite inte...
RT
Answered by Ryan T. • Maths tutor
11407 Views