Search over 10,000 free study notes

This question can be solved in two ways. One way is to divide the whole equation, both sides by 3, which gives x-2=7. Then add 2 to both sides to give x=9. Another way is to work out the left hand side of...

When a beta decay occurs there are a couple of things you need to remember. First of all you are right, the nucleus doesn't contain any electrons. It does however contain neutrons and protons. We know tha...

The British Psychological Society ethical guidelines are to be followed for the protection of both researcher and participants within a psychological study. Providing information on areas such as informed...

This is a simple quadratic equation. To answer the question, it must first be factorised before it can be solved. To do this, two numbers need to be found which multiply to make the constant term and have...

x=4t-7 take the -7 over first, swapping the sign as it passes over the equals sign x+7=4t 4t = 4*t so we need to divide the other side of the equation by 4 1/4(x+7)=t