Top answers

Find the equation of the straight line which passes through the points (3,1) and (-1,3)?

The equation of a line is y=mx+c. The first step is to find m, which is the gradient. This is found by dividing the change in the y values, by the change in x values. So in this case, the gradient would be (...
JP
Answered by Joel P. • Maths tutor
11326 Views

Emphysema is a disease affecting the lungs. People with emphysema are often short of breath and find exercise difficult. Explain what happens to the lungs in this disease to cause the symptoms mentioned.

Emphysema affects the structure of the lungs called the alveoli. Each healthy alveolus has a large surface area in order for maximum diffusion of oxygen in the lungs. If someone is affected by emphysema, the...
EL
Answered by Elodie L. • Biology tutor
19048 Views

How does mark-recapture work?

Mark-recapture is a method of estimating a population size. A sample from the population is captured using an appropriate method, marked, and released. A second sample is then captured after an interval and ...
CS
Answered by Ciaran S. • Biology tutor
25333 Views

How did the hyperinflation of 1923 affect the German people?

Firstly, it is important to understand what hyperinflation is and how it works. The most basic definition of inflation is, that it is a sustained increase in the level of prices for different goods and servi...
LS
Answered by Lucie S. • History tutor
17394 Views

Explain the process of DNA replication in prokaryotes.

Replication involves the synthesis of the leading and lagging strand which occur in a 5' to 3' direction. First helicase unwinds the DNA strand, while topoisomerase relieves the strain created by the unwindi...
KK
Answered by Kristen K. • Biology tutor
4089 Views