Search over 10,000 free study notes

Ratios are best thought of as how to split up one total amount into different portions. People often like to think about a cake; in this particular scenario we are splitting a cake with 9 slices (7 + 2) i...

You can use a simple three step method:
Rearrange the inequality to the format 'y = ....', with the relevant sign in the middle (≥, ≤, < or >).Plot the line 'y = ....' making it a solid line if...

 There are only green pens and blue pens in a box. There are three more blue pens than green pens in the box. There are more than 12 pens in the box. Simon is going to take at random two pens from the box...

Mean is the average value, to calculate it you have to add up all the values and divide it by the number of values.So in this case, adding up: 34 + 35 + 36 + 32 + 39 = 176Then, divide the sum by number of...

One way to find the values of x and y is to substitute the value of x into one of the equations. To sub in x we need to rearrange an equation to get x on its own. We can change the second equation to x = ...