Search our library of homework questions

Top answers

All subjects

All levels

Define classical and operant conditioning, giving examples.

Classical conditioning is learning through association. For example, Pavlov conditioned dogs to salivate when they heard the sound of a bell by associating food with the sound of the bell. On the other ha...

Answered by • Psychology tutor

7079 Views

Solve the simultaneous equations: 5x + y =21 and x - 3y = 9.

Rearrange x - 3y = 9 to make x the subject by adding 3y to both sides of the equation, giving x = 9 + 3y. Substitute the value of "x" in the second equation for "9 + 3y", giving: 5(9 ...

Answered by Rebecca S. • Maths tutor

14149 Views

A product with perfectly elastic supply has sales of 100 units per week at a price of £2 per unit. Price elasticity of demand is(-)1 .5 over the relevant range. The government imposes a tax 20%. What will be the government’s weekly tax revenue?

£28

Answered by Jamie I. • Economics tutor

2012 Views

How should I answer a source-based exam question?

Source-based exam questions typically make up about half of the examined questions at GCSE level History. They can seem pretty challenging and confusing at first, but if you answer them in a structured wa...

Answered by Imogen K. • History tutor

2551 Views

ABCD is a rectangle with sides of lengths x centimetres and (x − 2) centimetres.If the area of ABCD is less than 15 cm^2 , determine the range of possible values of x.

First you interpret the given information and create an equation based on the question. x(x-2)<15. Then you express that equation in standard quadratic form: x^2-2x-15<0. Then you have to not forget...

Answered by • Maths tutor

5514 Views