Search our library of homework questions

Top answers

All subjects

All levels

Factorise the following expression x^2+11x+24=0

Find two values that multiply together to make 24, and add together to make 11
List the factors of 24:24,112,26,48,3
Here we can see the only numbers that add together to make 11 are 8 and 3, s...

Answered by Lauren M. • Maths tutor

2599 Views

On the graph related to the firms topic, why does the marginal cost curve meet the average cost curve at its lowest point.

The marginal cost is the cost of producing an additional unit, whilst the average cost is the average cost of producing each unit. If the marginal cost is lower than the average cost then the average cost...

Answered by Asisa S. • Economics tutor

4917 Views

How can you distinguish between an endothermic reaction and an exothermic reaction based on temperature change of the surroundings.

In an exothermic reaction, energy is released from the system and into the surroundings, the system loses energy so the surroundings gain energy. The surroundings gain energy as heat and therefore there i...

Answered by Kuba S. • Chemistry tutor

6477 Views

Evaluate the use of laboratory research in psychology, providing examples from core studies (4).

One strength of using laboratories is that they are highly controlled environments. For example, in Milgram's study into obedience to authority, the behaviour of the experimenter can be controlled, by hav...

Answered by Clea S. • Psychology tutor

1722 Views

Draw the following inequality on a graph: x^2+4x+1<-2

First we must ensure the equation is in a form that is easy for us to plot!This means we equate the quadratic to 0 by shifting the -2 to the other side. We do this by adding +2 to both sides.Now, we draw ...

Answered by Saad A. • Maths tutor

2774 Views