Top answers

solve x^2 - 2 < 2

Change the inequality to an equalsx 2 -2=2solve as normalx 2 -2=2-2x 2 -4=0factorise(x-2)(x+2)=0so x=-2 and x=2However, how do you know if the answer is bigger or smaller than -2 and 21st draw the graph for ...
AM
Answered by Alicia M. • Maths tutor
4332 Views

A cylinder of base radius 2x and height 3x has the same volume as a cone of base radius 3x and height h. Find h in terms of x.

The equation for the volume of a cylinder is (1/2) pi (r 2 )*H, where r is the radius and H is the height of the cylinder. For the cylinder given, the volume is therefore (1/2) pi ((2x) 2 )*3x, or more simpl...
GF
Answered by Georgie F. • Maths tutor
7540 Views

What process is known as cell 'eating'and give one example of that process relating to the human immune system?

Cells need to eat and drink, just like me and you. The process where cells ingest other cells or foreign material is called PHAGOCYTOSIS. The process itself is very complicated and you don’t need to know the...
MT
Answered by Marko T. • Biology tutor
5555 Views

How can I maximise my marks in the written paper?

It is important to familiarise yourself with the mark scheme for the written paper, and for each individual question within as they may require different skills. Read the question carefully, taking in any wo...
MJ
Answered by Matilda J. • French tutor
2390 Views

How do I approach unseen poetry during an exam?

When you’re facing an unseen poem in an exam, the idea of reading, understanding and analysing it in such a short period of time can seem daunting. Before you even read the poem, it is useful to highlight th...
IH
5568 Views