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How to Solve Two Simultaneous Equations

I will use the whiteboard in order to explain the answer to my question. The format will follow:Understanding what it means to 'solve' one equationUnderstanding what it means to 'solve' two equationsVariable...
MI
Answered by Matthew I. • Maths tutor
3400 Views

Solve the simultaneous equations 4x – 3y = 11 10x + 2y = −1

4x - 3y = 11 10x + 2y = -1 x2 x38x - 6y = 22 30x + 6y = -338x = 19x = 28 - 3y = 11-3 = 3yy = -1x=2, y=-1
SJ
Answered by Sophie Joy L. • Maths tutor
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How do I factorise x^2 - 5x + 6

You want to express this expression in the form (x+a)(x+b) to do this you want to find two numbers that add to make -5 (the coefficient of x) and multiply to make 6. Let's first focus on numbers that multipl...
SW
Answered by Samuel W. • Maths tutor
5764 Views

I need help understanding simultaneous equations with more than two variables, can you please help?

Working with more than 2 variables in simultaneous equations can be daunting at first, but as long as you apply the same methods you have learned for simpler problems, you will get used to these more complex...
SM
Answered by Sam M. • Maths tutor
3251 Views

There are 720 boys and 700 girls in a school. The probability that a boy chosen at random studies French is 2/3 The probability that a girl chosen at random studies French is 3/5. Work out the number of students in the school who study French.

The probability that a boy chosen at random studies French is 2/3. This is also a proportion. It says that for every 3 boys, you can say that 2 of them will study french. It is also close to 66% as it can be...
TD
Answered by Tutor132640 D. • Maths tutor
4744 Views