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Solve the simultaneous equations. Equation one: 4x – 3y = 7. Equation two: 4x + y = -1.

To solve this question you need to find a value of x and y which satisfies both of the equations. Simultaneous equations can be solved by three methods: substitution, elimination, and graphically. We will us...
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Answered by Emma F. • Maths tutor
9341 Views

How can you find out if two lines expressed in their vector form intersect?

Let the lines be: r 1 = (a, b, c) + t(d, e, f) r 2 = (g, h, i) + s(j, k, l) Since t and s above are variables and the rest of the letters are constants, the only way to change the point which the vector equa...
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Answered by Yordan I. • Maths tutor
4783 Views

How do you form the perfect tense, le passé composé?

the perfect tense, le passé composé, expresses completed actions in the past. It is composed of -the auxiliary verb (avoir ou être) conjugated in the present tense - followed by the past participle of the ve...
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Answered by Elena R. • French tutor
3180 Views

How to get started on an essay?

Writing an essay - whether it's for coursework submission or practice for an exam - can seem really really overwhelming sometimes. It's not as hard as it seems, if you know where to start though! First, you ...
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Answered by Lili G. • English tutor
2702 Views

Why is Pythagoras theorem (a^2 + b^2 = c^2) true for every right angle triangle?

Firstly let's take a right angle triangle. Label its sides a,b, c for the hypotenuse. Then arrange 4 of these triangles into a large square, with a smaller square contained within it. The area of the smaller...
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Answered by Edwyn G. • Maths tutor
8314 Views