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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
5701 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
3184 Views

what is the number of ion in 7.41g of calcium hydoxide Ca(OH)2 ?

number of particles = mole x Avogadro constantAvogadro constant is 6.0 × 10 23 mol –1 .Mr of Ca(OH) 2 is 7.41g mol -1 mole = Mass / Mr = 7.41/7.41 = 1 moleThe question is asking: the number of ion = ?So, in ...
WW
Answered by Wai W. • Chemistry tutor
12585 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
4693 Views

How and why does Samuel Beckett create hopeless situations that parody reality in the play 'Waiting for Godot'?

Beckett talks about the theme of suicide consistently throughout the play, as the characters mull over their lives and existences. When Vladimir asks ‘What do we do now?’, Estragon replies quite casually ‘Wh...
MC
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