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using our second equation, we can see that x=y+2. Therefore we can sub x into the first equation. This will give us 2*(y+2)+5y=25. We can go ahead and expand the brackets, which gives us 2y+4+5y=25. We ca...
For this exercise we need to be aware of the factor theorem.The factor theorem states when f(c) = 0 then x - c is a factor of the polynomial f(x) and c is a root of f(x). Because we are told that one of t...
To find a part of the area we need the whole area first.Find the formula for the area of a circle: A= pi x r2We have been given the diameter so we need to work out what the radius ...
the nth term formula is the sum of the first term (a) and the second to last term (n-1) * the common difference (d). so a + (n-1)d where a = 2 and d = 4 in this case is 2 + (n-1)4 = 4n - 2. the sum to...
We can break down this question in to two parts. Firstly we should work out how much Jodie earns for the hours that she worked. Since she worked 3 hours on Saturday to work out how much she was paid we ha...
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