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How do I solve simultaneous equations?

Let's use an example.

x+y=6

2x+3y=14

Find the values of x and y.

When I was kid back then, I was always wondering why are equations important? We...

WH
Answered by Wilson H. Maths tutor
5699 Views

Why at room temperature is H2O a liquid, but H2S is a gas?

This question is basically just asking you why water has a higher boiling point that H2S. So you need to ask yourself what is the factor which means water has a higher boiling point? If you ...

MK
Answered by Melissa K. Chemistry tutor
45318 Views

What is the Pythagoras Theorem?

The Pythagoras Theorem equation is:

a+ b2 = c2

It is used to calculate an unknown side of a right angled triangle. a, b and c represe...

NB
Answered by Natasha B. Maths tutor
4959 Views

How do I simplify the equation 4x + 5x -2 - 2x + 7?

To simplify an equation the x terms can be collected together to give: 4x + 5x - 2x = 7x

The numbers can be collected together to give: -2 + 7 = 5

Which then when put togeth...

NB
Answered by Natasha B. Maths tutor
6581 Views

How do I know whether to use por or para?

Because these words are both translated to English with 'for' it can be difficult to choose between them at times. In order to choose correctly, there are several rules to remember, here are the most i...

TH
Answered by Tim H. Spanish tutor
5694 Views

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