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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...

KJ
Answered by Katie J. Biology tutor
15847 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 referr...

AC
Answered by Amélie C. French tutor
4094 Views

Prove that the sqrt(2) is irrational

To do this we will assume sqrt(2) is rational, a fraction, which means: 21/2 = m/n; m,n belong to integers. Also, m/n is an irreductible fraction

JC
Answered by Joao C. Maths tutor
3949 Views

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

Firstly we will start by expanding the brackets. We will do 2a + 23 for the first bracket,  then we will do 5a + 5(-1) for the second bracket which will give us 2a + 6 + 5a - 5. We will ...

SB
Answered by Serena B. Maths tutor
5075 Views

Factorise and solve x^2 - 8x + 15 = 0

In order to solve a quadratic equation by factorisation you must first find the two numbers which add up to - 8 and multiply to get 15. We can do this by trial and error - first listing all of the pairs o...

LM
Answered by Lucy M. Maths tutor
5511 Views

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