Top answers

Nadia has £5 to buy pencils and rulers. Prices: Pencils - 8p each Rulers - 30p each She says, "I will buy 15 pencils Then I will buy as many rulers as possible With my change I will buy more pencils." How many pencils and how many rulers does she

£5 = 500 p 1 Pencil = 8p1 ruler= 30p If she is buying 15 Pencil , it will be= 8 *15= 120p, 380 p remains ( 500p-120p= 380p) 360p / 30 = 12 rulers this will give you a change of 20 p , 20/8 ( price for a penc...
KI
Answered by Khansa I. • Maths tutor
8031 Views

Solve x^2-x-12=0

x 2 - x - 12 = 0Factorise to get (x-4)(x+3)=0This gives (x-4)=0 or (x+3)=0So x=4 or x=-3
HS
Answered by Hursh Singh A. • Maths tutor
3192 Views

We are given a right angled triangle with one side of unknown length. The shortest side is 3cm long, and the longest side is 5cm long. Calculate the remaining side.

This is a classic question testing your understanding of Pythagoras' Theorem. This is an equation which shows us the relationship between the 3 sides of a right angled triangle : a 2 + b 2 = c 2 . a and b ar...
SM
Answered by Sean M. • Maths tutor
3793 Views

Using newtons laws explain how a falling object can reach terminal velocity (6)

So we need to break this down into two parts, what are Newtons laws and what is terminal velocity? In this case we will only need the first two of Newtons laws. Number one " An object will remain at res...
RS
Answered by Robert S. • Physics tutor
3565 Views

Solve the simultaneous equations 5x + y = 21 and x- 3y = 9

There are different ways to approach solving a simultaneous equation question. For this one I recommend using substitution for this one where you insert one equation into the other. First take the equation x...
GB
Answered by George B. • Maths tutor
3601 Views