5\(x \) - 2 = \(x \) + 16
4.5
3.5
2.3
125 = \(a\) + \(b\). \(a\) and \(b\) are square numbers. Find two possible pairs of values for \(a\) and \(b\).
\(a\) = 10, \(b\) = 125 and \(a\) = 20, \(b\) = 150
\(a\) = 4, \(b\) = 121 and \(a\) = 25, \(b\) = 100
\(a\) = 1, \(b\) = 101 and \(a\) = 5, \(b\) = 50
Multiply out and simplify 10(2\(x \) – 1) – 20\(x \)
20\(x \)
-10\(x \) - 10
-10
A company receives 1250 orders in December. It has a January sale. It receives 1430 orders in January. Work out the percentage increase in orders.
14.4%
1.44%
12.58%
Use approximations to estimate the value of \(\frac{402.5}{2.19 x 38.7}\)
6
4
5
Expand \(w\)(\(w\) + 6)
\(w^2\) + 6\(w\)
6\(w^2\) + \(w\)
\(w\) = 6
Factorise fully 8\(y\) + 20
\(y\)(8 + 20)
\(y\) = 2.5
4(2\(y\) + 5)
Post and packing on a parcel is £8.00 for delivery in the UK. This increases by 40% if the parcel is sent to the USA. Work out the cost to send the parcel to the USA.
£3.20
£11.20
£4.80
Write 126 as a product of prime factors.
3 x 2 x 2 x 5
1 x 126
2 x 3 x 3 x 7
Alice has £4. Billie has twice as much as Alice. Billie has two-thirds of the amount Chris has. The amount Chris has is four-fifths of his age in years. How old is Chris?
11
12
15
