Top answers

How do I find roots of a quadratic equation when I can't factorise?

When factorising isn't working, we can try using the quadratic formula. First, we need our quadratic equation and find a,b and c - the coefficients of x and the constant. Now, we can write out the quadratic ...
FD
Answered by Freya D. • Maths tutor
4265 Views

It is given that sin(x) = 1/2. Find the value of sec(x)

x = 30ºcos(30) = √3/2sec(30) = 2/√3 or 2√3/3
AH
Answered by Alex H. • Maths tutor
3489 Views

Describe the process of natural selection.

Within any population, there is naturally variation between organisms because they all have differences in their genes. The organisms that are best suited to the environment that they live within are most li...
OA
Answered by Ollie A. • Biology tutor
7304 Views

How do I structure a 30 mark essay question?

When structuring a 30 mark question, prepare for the question to sometimes be split in to two main sections. For example "Explain how aggressive male behaviour is shown in this extract" followed by...
PB
54642 Views

What are the main literary devices and what effect do they have?

There are various literary devices a writer can use in their work. These are usually used to improve the quality of a description and to achieve desired effects. Keep an eye out for writers using these in th...
MV
Answered by Maya V. • English tutor
5116 Views