Top answers

Solve the simultaneous equations 2x + y = 7 and 3x - y = 8.

While there are several ways to solve this, in this particular case I would favour the method of elimination. Since the value of y is the same and they have opposite signs, we can add the equations together ...
HB
Answered by Hannah B. • Maths tutor
5519 Views

Factorise x² + 2x - 8

Since an x² is produced, we know that the factorised version will be (x+a)(x+b). To find a and b we need to consider the relationship between 2 and -8. It is going to be factorised into two brackets, due to ...
HB
Answered by Hannah B. • Maths tutor
35207 Views

How do I analyse a primary source?

For general analysis of any primary source you should first consider two main things: the nature of the source, and who wrote it and for what auidence. The nature of the source concerns what the typr and for...
HB
Answered by Hannah B. • History tutor
5282 Views

Why is the concept of the “marginal “ so important in economics?

“Marginal” in economics means “additional” and “extra”. It is the idea that firms may take decisions by considering the effect of small changes from the existing situation. Economists rely heavily on the ide...
TC
Answered by Tiffany C. • Economics tutor
30384 Views

Explain the factors influencing short run and long run aggregate supply

Factors affecting the short run aggregate supply includes factor costs, temporary supply shocks, government policies with short-term effects and expectation of price level. Firstly, at the same price level, ...
TC
Answered by Tiffany C. • Economics tutor
42543 Views