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With a bag of 5 blue marbles, 7 green marbles, and 3 red marbles. What is the probability of picking out two blue marbles? Pick them one at a time and do not replace them.

So there are 15 marbles in total (5 + 7 + 3) The probability of the first marble will be the number of blue marbles / total number of marblesTherefore, you do 5/15 = 1/3 Then for the second marble you do the...
CB
Answered by Christopher B. • Maths tutor
4970 Views

How do I structure an essay?

I find that clarity is the most important thing in essay writing. Knowing exactly what point you are trying to make is something I feel is often overlooked. Personally, it helps me to draw out a rough plan t...
JB
Answered by Jake B. • English tutor
1992 Views

How do I solve the simultaneous equations 2x - y = 3 and 3x + y = 9

First of all you need to spot a way we can add or subtract these two equations together so that we can get rid of one of the terms . This is easily spotted by writing the equations like so:2x - y = 13x + y =...
JB
Answered by Joshua B. • Maths tutor
6305 Views

I want to apply to study art at university but I feel like my sketchbook isn't presenting me as well as I'd like. What can I do to improve it for my application?

The most important thing when it comes to working on your sketchbook is finding your passions, and displaying them in a detailed, intricate way. Try not to think about what you think the university will want...
HS
Answered by Hattie Seren M. • Art tutor
1671 Views

How do you factorise a quadratic expression using the formula

To factorise an expression of the formax 2 +bx+c We use the formulaX=(-b+/- (b^2-4ac)^(1/2))/2aExample:Factorise 3X 2 +2X+-1So here a=3 b=2 c=-1From the formula we get X=1/3 and X=-1And so our factorisation ...
KS
Answered by Kaitrin S. • Maths tutor
3390 Views