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How do you solve a simultaneous equation?

Take 2 equations say equation 1: 2y+4x=26 and equation 2: y+3x= 18. What we need to do is make either the two x values or the 2 y values be equal so that we can subtract one of the equations from the other. ...
BS
Answered by Bryony S. • Maths tutor
4576 Views

What were the causes of the First World War?

At a surface level, the assassination of Archduke Franz Ferdinand can be seen as the main cause, but this was just the catalyst for bubbling tensions which would have resulted in a war regardless. There were...
JC
Answered by Jonathan C. • History tutor
4051 Views

simplfy x/3 + x/4

When simplifying algebraic fractions, first times all the components by the denominator (number on the bottom) of the first component. In this case, that is 3. x/3 times 3 = x and x/4 time 3 = 3x/4. This is ...
TM
Answered by Tabitha M. • Maths tutor
5514 Views

How do I know when to use preterit or imperfect tense?

This is something that many students struggle with but luckily it is simpler than it seems and once you know it, you know it! I like to use an example that I can refer back to if I get confused: Estaba leyen...
TM
Answered by Tabitha M. • Spanish tutor
3838 Views

At what angle does total internal reflection occur?

This question is to do with the refraction that occurs when a light ray hits a boundary between two media of different refractive index. We know that the relationship between the angle of incidence and angle...
AS
Answered by Alex S. • Physics tutor
5193 Views