Search over 10,000 free study notes

Depending on the expression how to expand and simplify is different. Commonly for two brackets back to back these are expanded by the FOIL method. Multiply together the two first parts of the brackets, th...

we need to have a common denominator (bottom number the same) to be able to add or subtract fractionsmultiply first fraction by (x+4) on numerator (top) and denominator (bottom)multiply second fraction by...

First, we want to find the gradient of L1 using (4,6) and (12,2)m= (2-6)/ (12-4) = -1/2 then we can find the equation of L1 using y=mx+c rearrange for c as the subject, c= y-mx and substitute the gradient...

You need to work out how many animals there are in total first. Mary sells 8 of her sheep so 12-8 = 4 sheep In total she'll have 4+ 16 + 24 + 6 = 50 animals 4/50 = 0.08 0.08 x 100 = 8% - to get a percent...

For the first 24 games, heads = 24 x (2/3) = 16. For the next 6 games, heads = 6. Total number of heads = 22. 30 - 22 = 8 therefore tales = 8. Therefore, ratio = 22:8 = 11:4, heads:tales.