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Explain what is meant by the rate of inflation and  analyse the main causes of inflation

Inflation is a sustained increase in the general price level leading to a fall in the purchasing power or value of money. The rate of inflation is measured by the annual percentage increase in the level of c...
KL
Answered by Katie L. • Economics tutor
3578 Views

What is a hurricane and outline the structure of a hurricane

A hurricane is a type of tropical cyclone, which is a generic term for a low pressure system that generally forms in the tropics. The cyclone is accompanied by thunderstorms and, in the Northern Hemisphere, ...
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Answered by Katie L. • Geography tutor
5170 Views

Solve the simultaneous equations algebraically

x 2 +y 2 =25 and y-3x=13Step 1 is to label the equations (1) and (2). We shall label the first equation, the quadratic, as equation (1) and the second equation, the linear, as equation (2). When solving a si...
AE
Answered by Andrew E. • Maths tutor
5164 Views

You are given the equation y=x^2. Determine whether or not the equation has any maximums or minimums and identify them (whether they are maximums or minimums).

The question has given us a function and wants us to determine whether or not any maximums/minimums exist (and if so identify then). We know maximums/minimums occur when the derivative of the equation is equ...
LM
Answered by Lana M. • Maths tutor
3392 Views

Given that sin(x) + cos(x) = 2/3, find cos(4x)

It is not clear what to do when starting, but we realise that by making both sides to the power of two, will lead to have an expression containing sin^2(x) + cos^2(x), which is equal to one (which will proba...
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Answered by Felipe R. • Maths tutor
4870 Views