Top answers

Why did France demmand such a harsh settlement at the Peace Treaty in 1919? (6)

This is a 6 mark question which requires reasons in the form of three PEE (Point, Evidence, Explain) paragraphs. A model answer could be structured like this:P: Residual bitterness over the Franco-Prussian W...
TK
Answered by Tara K. • History tutor
12639 Views

Balance the equation for the reaction of sodium hydroxide with sulphuric acid.

H 2 SO 4 + NaOH --> Na 2 SO 4 + H 2 OWrite out all the elements involved, and how many times they appear on each side.H 3:2,S 1:1,O 5:5,Na 1:2.Start by making the number of sodiums the same on both sides ...
LB
Answered by Louise B. • Chemistry tutor
17418 Views

Work out 90% of 130

Find 90% of 130Calculate the value of 10%130 / 10 = 13You can now use this value to find the answer as 100% - 10% = 90% 130 - 13 = 117
FW
Answered by Freya W. • Maths tutor
3543 Views

3 teas and 2 coffees have a total cost of £7.80. 5 teas and 4 coffees have a total cost of £14.20. Work out the cost of one tea and the cost of one coffee.

Firstly we need to set up a simultaneous equation. 3t +2c =7.80 and 5t +4t = 14.20 Rearrange the first equation to find c on its own. 2c = 7.80 - 3t, c= (7.80 - 3t) / 2Then put the new value of c into the se...
LB
Answered by Louise B. • Maths tutor
5341 Views

Solve the simultaneous equations y = x + 3 and y = x^2 + 3x

Step 1: Recognise the quadratic term, this cannot be solved through elimination. Therefore we must need to use substitution. Substitute y = x + 3 into the quadratic. Gives x + 3 = x 2 + 3xStep 2: Rearrange t...
SN
Answered by Sam N. • Maths tutor
7861 Views