Top answers

Find the value of x when x^2-x-6=0

We firstly need to look how to factorise quadratics. (x )(x ) By looking at this, we need 2 numbers that add together to make -1. We need 2 numbers that multiply to make -6. To multiply to make -6, we need a...
JR
Answered by Josh R. • Maths tutor
5941 Views

How do I find a stationary point? And how do I determine whether it is a maximum or minimum point?

In order to find the stationary points of any funcion, you must differentiate. Once you have differentiated, the deriviate of this function must be set equal to 0, in order to determine what the stationary p...
NA
Answered by Neelam A. • Maths tutor
20052 Views

Solve the simultaneous equations: 15x+10y=20 4x+5y=17

To explain this question to a student, I would initially ask my own questions in order to gain an understanding of what the student already knows about simultaneous equations. I would ask if they had seen si...
RA
Answered by Roshan A. • Maths tutor
4165 Views

A ladder 7.4m long is leaning against a wall as shown in the diagram. The foot of the ladder is 2.9m away from the wall. Calculate the distance the ladder reaches up the wall to 2 significant figures.

7.4 2 -2.9 2 =answer 2 square root above answer to get the answer
AC
Answered by Abi C. • Maths tutor
6243 Views

What is Pythagoras' Theorem?

You can use pythagoras' theorem to find the length of a side of a right angled triangle, provided that at least two of the lengths of the sides are known. The general rule is a 2 + b 2 = c 2 where a, b and c...
VJ
Answered by Victoria J. • Maths tutor
5160 Views