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Suppose that you go to a party where everyone knows at least one other person, you get a bit bored and wonder whether there are at least two people which know the same number of people there.

To get our head around a problem like this is always very useful to think of a few examples. First supposed that this party is a bit borining and there are only 2 people, then by assumption they know each ot...
AS
Answered by Andrea S. • Maths tutor
4107 Views

How do you solve trigonometric equations?

To help explain we will use the following example: Show that cos(2x) = 2cos 2 x - 1. Hence solve the equation cos(2x) + cosx = 0 for 0 o < x < 360 o . Answer: We know from our sum-difference formulas t...
JY
Answered by Jessica Y. • Maths tutor
5544 Views

Explain two possible disadvantges of food aid for a community that is currently experiencing food shortages.

Food aid is often donated by richer countries and is used in emergency situations but also to help solve long-term hunger. However, this type of aid comes with many disadvantages as often the type of food de...
RA
Answered by Rosie A. • Geography tutor
3428 Views

Describe the role of stem cells and a therapeutic use

Stem cells are undifferentiated cells that retain the ability to specialize. In animals/ mammals, they are found in the embryos and adult tissue and in plants they are found in the meristematic tissue in the...
LY
Answered by Lakshmi Y. • Biology tutor
5414 Views

(History) 'Is it more appropriate to characterise the February Revolution of 1917 in Russia as "popular" or "spontaneous"?'

This is an example of a typical GCSE question, or alternatively could appear as a 'prompt' to a source question on an A level paper. In any answer, it is important to consider both sides of the argument, bef...
LC
Answered by Lorcan C. • History tutor
3293 Views