Multiply out and simplify 10(2\(x \) – 1) – 20\(x \)
Respuesta
20\(x \)
-10\(x \) - 10
-10
Pregunta 4
Pregunta
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.
Respuesta
14.4%
1.44%
12.58%
Pregunta 5
Pregunta
Use approximations to estimate the value of \(\frac{402.5}{2.19 x 38.7}\)
Respuesta
6
4
5
Pregunta 6
Pregunta
Expand \(w\)(\(w\) + 6)
Respuesta
\(w^2\) + 6\(w\)
6\(w^2\) + \(w\)
\(w\) = 6
Pregunta 7
Pregunta
Factorise fully 8\(y\) + 20
Respuesta
\(y\)(8 + 20)
\(y\) = 2.5
4(2\(y\) + 5)
Pregunta 8
Pregunta
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.
Respuesta
£3.20
£11.20
£4.80
Pregunta 9
Pregunta
Write 126 as a product of prime factors.
Respuesta
3 x 2 x 2 x 5
1 x 126
2 x 3 x 3 x 7
Pregunta 10
Pregunta
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?