make y the subject of this expression p = ((x+y)/5)^1/2
To maintain the equality everything that is done to one side needs to be done also to the other. First, we square both sides to get rid of the power on the right-hand side. What we get is p^2 = (x+y)/5. Now we get rid of the fraction on the right-hand side by multiplying both sides by 5 and we obtain 5p^2 = x+y. Then, we subtract x to both sides and we get the final expression y = 5p^2 - x.
GS
Related Maths GCSE answers
All answers ▸How would I simplify (3x^2 − 8x − 3)/(2x^2 −6x) fully?
Billy wants to buy these tickets for a show. 4 adult tickets at £15 each 2 child tickets at £10 each A 10% booking fee is added to the ticket price. 3% is then added for paying by credit card. Work out the total charge when paying by credit card.
The point (-3, -4) is the turning point of the graph of y = x^2 + ax + b, where a and b are integers. Find the values of a and b.
If x:y=7:4 and x + y = 88, work out the value of x – y.