Search over 10,000 free study notes

To solve this question, we must first understand what a simultaneous equation is = an equation where the variables have the same values. So in this example, x and y are the same in both ...

The ratio of men to women at the game is 13:5. The difference between the number of men and women is 4152. Subtract 5 from 13 to work out the difference between the ratio value of men and women. 13-5=8. D...

Historically, the primary method of treating offenders has been custodial sentencing. Arguments for custodial sentences are that dangerous offenders cannot harm members of the public whilst detained and t...

Sewage can contaminate water supplies which leads to waterborne diseases like typhoid or cholera. Agricultural run-off threatens water quality since pesticides have high levels of nitrate which causes eut...

Using Pythagoras, x² + y² = r².Using basic trigonometry, x = rsinθ and y = rcosθ.
xy + 1 = r²sinθcosθ + 1 = (1/2)r²sin2θ + 1
Subbing in bot...