Search over 10,000 free study notes

First let's start with the mean, the formula for the mean is: (Sum of terms)/(amount of terms). We know the amount of terms is 10 as this is in the questions, to find the sum of the terms we add all the m...

The first step for this question is to rearrange the equation to get the right hand side equal to 0.x^2+7x+12=0Next, we have to try and factorise this equation. We do this by considering what two numbers ...

Firstly, you form the question into an equation. for example, J + T = 84. We know Jessica paid £38.50, so now we can add that to the equation. 38.50 + T = 84. Now that we have does this we move the 38.5 t...

(5 - x)/2 = 2x - 7, 5 - x = 2(2x - 7), 5 - x = 4x - 14, 5 + 14 = 4x + x, 19 = 5x, 19/5 = x

x=0.777...10x=7.77...9x=10x-x=7
9x=7so x=7/9so x=0.777...=7/9