Top answers

Define price elasticity of demand and explain the factors affecting it

Price elasticity of demand (PED) is a measure of the % change in demand of a good which occurs in response to a change in price.There are four main factors which effect PED:availability of substitutes - if a...
SA
Answered by Sofia A. • Economics tutor
4371 Views

Given that y = arcsinh(x), show that y=ln(x+ sqrt(x^2 + 1) )

In questions involving hyperbolic functions and natural logs, it is often useful to rewrite things in terms of e, since then you might be able to take a natural log at the end of your answer. Here, we can re...
SB
10978 Views

Two species of frogs, each found on one of two neighbouring islands yet with the same genus, are identified. Scientists believe that the two species originated from a common ancestor. Explain how these species could have evolved.

Questions about speciation are at their core based on Darwin's theory of evolution. As a result, we must recall GCSE knowledge of natural selection to combine with the new concepts in speciation introduced a...
IS
Answered by Iqra S. • Biology tutor
3639 Views

What was the most significant factor in the causation of the October 1917 Russian Revolution?

Firstly, we need to decide what the main factors were. They can be defined as the failure of the Provisional Government, the role of Lenin and the Bolsheviks and WW1. Ultimately, Lenin and the Bolsheviks car...
CB
Answered by Cora B. • History tutor
6087 Views

Draw a genetic diagram to show how unaffected parents could have a son with Haemophilia but also other children who do not suffer from the disease.

First figure out the phenotype (what is visible/expressed) of parents : Normal male x Normal female Next write down their gametes : X H y and X H X h The disease is sex linked (X linked) so can only be carri...
LF
Answered by Lucy F. • Biology tutor
4537 Views