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How do we solve simultaneous equations, say for example x + 4y = 20 and 2x - 2y = 10 ?

When it comes to simultaneous equations, there are two methods that we can use to solve them. The first method is called substitution , where we make one of the variables the subject in one of our equations ...
JW
Answered by Jonathan W. • Maths tutor
8452 Views

What are the different ways that energy can be transferred?

There are three methods of energy transfer that we need to learn: conduction, convection, and radiation. 1. Conduction: Heat is thermal energy, and in solids it can be transferred by conduction. Heat is pass...
LM
Answered by Lois M. • Physics tutor
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How can I remember when to use 'être' in the perfect tense?

Etre is the auxiliary that is usually used with verbs that mean ' coming ' or ' going ' in French, as opposed to avoir . You can use the ' DR MRS VANDERTRAMP ' acronym to help you remember: D evenir (to beco...
EH
Answered by Elizabeth H. • French tutor
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What are the different methods of solving quadratic equations?

For your maths GCSE it is important that you understand the three main methods of solving quadtratics: factorisation, completing the square, and using the quadratic formula. 1. Factorisation: The first step ...
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Answered by Lois M. • Maths tutor
12435 Views

Solve the simultaneous equations y= 3x +4 and y= 2x + 5

'Solve' means to find the values of the unknown variables in the equations , commonly letters, which in this question are x and y. Step 1: Put equations equal to eachotherBoth equations given are equal to y ...
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Answered by Vicky C. • Maths tutor
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