Search our library of homework questions

Top answers

All subjects

All levels

Solve 4(x-5)=18

There are 2 ways to solve this equation:Method 1:Expand the brackets by multiplying everything inside the brackets by 4 to make 4x-20=18Then +20 to both sides making 4x=38Then divide by 4 to find x, there...

Answered by Jessica S. • Maths tutor

18719 Views

Find the coordinate of the stationary point on the curve y = 2x^2 + 4x - 5.

The important point in the question is the term 'stationary point'. This is where the graph of y will 'flattern out'. If we look at this graph, we can say that the gradient is equal to 0 at this point. Th...

Answered by Serkan M. • Maths tutor

4786 Views

write (x+2)(x+3)(x+5) in the form ax^3+bx^2+cx+d

First take (x+2)(x+3) and expand to get x²+3x+2x+6, which can be simplified to equal x²+5x+6.Then mutiple x²+5x+6 by (x+5). This will give you x³+5x²

Answered by Cora H. • Maths tutor

3272 Views

Outline a factor that has led to globalisation

Globalisation is the growing integration of the world's economies.
One factor that has enabled globalisation to take place is the reduction in international trade barriers. This is because over the l...

Answered by Sam T. • Business Studies tutor

1879 Views

In which ways are the lungs adapted for efficient gas exchange?

There are three main ways in which the lungs are adapted for efficient gas exchange. These are: the fact that structures in the lungs called alveoli provide a large surface area for gas exchange. Also, th...

Answered by Holly M. • Biology tutor

4440 Views