Top answers

Describe how deforestation is causing the change in the amounts of different gasses in the atmosphere

Deforestation is the process of removing trees, usually for fuels or for timber. The removal of trees means that there is less photosynthesis taking place. Photosynthesis is the process of removing carbon di...
KJ
Answered by Katie J. • Biology tutor
15914 Views

Differentiate the following function u = Cos(x3)

u = Cos(x 3 ) To differentiate this function we will use the chain rule. Firstly we will set x 3 to another variable name such as v. So now v = x 3 . Lets differentiate this. dv/dx = 3x 2 We can now differen...
SB
Answered by Serena B. • Maths tutor
3938 Views

When and how would you use the vouvoiement in French?

The vouvoiement in French is a form of politness. You would use the "tu" when you are talking to a friend or someone close to you, however you would use the "vous" when referring to a per...
AC
Answered by Amélie C. • French tutor
4168 Views

Prove that the sqrt(2) is irrational

To do this we will assume sqrt(2) is rational , a fraction, which means: 2 1/2 = m/n ; m,n belong to integers. Also, m/n is an irreductible fraction , meaning m and n have no common divisors. 2 1/2 = m/n &lt...
JC
Answered by Joao C. • Maths tutor
4002 Views

Expand and simplify 2(a + 3) + 5(a – 1)

Firstly we will start by expanding the brackets. We will do 2 a + 2 3 for the first bracket, then we will do 5 a + 5 (-1) for the second bracket which will give us 2a + 6 + 5a - 5. We will then simplify what...
SB
Answered by Serena B. • Maths tutor
5135 Views