Search our library of A Level questions

Top answers

All subjects

A Level

‘An eighteenth-century process is still used for the election of a twenty-first-century president.’ Critically evaluate this view of the US’ Electoral College (30 marks).

The use of ‘critically evaluate’ shows that students must address and analyse arguments both for and against the use of the Electoral College (EC). However, to achieve the top marks students must convinci...

Answered by Abi S. • Government and Politics tutor

2506 Views

Let f(x) = x^3 -2x^2-29x-42. a)Show (x+2) is a factor b)Factorise f(x) completely

a) To show (x+2) is a factor, we want to show f(-2)=0. So (-2)^3-2(-2)^2 -29(-2)-42=-8-8+58-42=0
b) Divide x^3 -2x^2-29x-42 by x+2 to get x^2-4x-21 which we factorise to get (x+3)(x-7). Hence f(x)=(...

Answered by • Maths tutor

6396 Views

Describe The Structures of different sugars, and why these different features are useful.

Amylose is a short coiled molecule. Which makes it compact, Good for storing lots of glucose in a small space.Amylopectin is a branched molecule with many end points for enzymes to access. So lots of hydr...

Answered by • Biology tutor

3052 Views

When both sodium and Hydrochloric acid are added to a test tube, what will be observed?

When a Metal and acid react together they form a salt, and hydrogen gas. You can't really see the salt when is is formed, as salts dissolve in solution. However you can see the hydrogen gas bubbles. So fi...

Answered by • Chemistry tutor

2521 Views

To what extent did the arms race exacerbate tensions between the USA and USSR during the Cold War?

Essay Plan-Firstly, introduce the answer by giving an overview of the arms race. It began with the USSR successfully testing an atomic bomb in 1949 and was a key feature of the struggle for supremacy thro...

Answered by • History tutor

2942 Views