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Prove Pythagoras' Theorem

Never in a GCSE syllabus, but still a question I had as a student and one I hear today- something, I feel, is worth going over (Similar in a sense to proving that completing the square works). We use the &qu...
SC
Answered by Sam C. • Maths tutor
3444 Views

What is the basic economic problem?

To answer this question, one must take into account the varying schools of thought which exist in economics (neoclassical, Keynesian, Marxian, behavioural, feminist etc.). However, for GCSE and A-level Econo...
JL
8329 Views

how do i write an A-level history essay?

History is obviously a lot to with learning facts, but it is so crucial that you know that it isn't all about facts. It is about being able to build a convincing argument and using facts to back up your poin...
TA
Answered by Toyosi A. • History tutor
2852 Views

Find the point(s) of intersection of the curve y=x^2+7x+14 and y=2x+8:

Equate the two graphs:x 2 +7x+14=2x+8Rearrange to find a single quadratic:x 2 +5x+6=0Factorize and solve:(x+2)(x+3)x=-2 x=-3Sub x values into one of the original graphs to find y:(-2,4) (-3,2) I can also pro...
DM
Answered by Daniel M. • Maths tutor
3892 Views

Describe how the sperm cell is adapted to its function.

The sperm cell is adapted to its function in multiple ways:It has a tail which enables it to swim towards the egg.The middle section of the cell is packed with mitochondria. This allows it to release the ene...
HH
Answered by Huw H. • Biology tutor
35875 Views