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hi i HATE mymaths.net i cant do anything on it EVER
please help
http://img507.imageshack.us/img507/609/mathsqr5.jpg
http://img507.imageshack.us/img507/9655/maths2lo4.jpg
http://img525.imageshack.us/img525/443/maths3zv8.jpg
http://img507.imageshack.us/img507/1007/maths4tn2.jpg
you dont have to do it all just a little bit would really help as im so stuck and if you wouldnt mind explaining i would be grateful
thanks :(!
I thought it was mymaths.co.uk - Last time I checked
oh yeh it is
i get confused with it and another website myhayes.net we use
my bad!!
I hated these at school. Try this: http://www.hellam.net/algebra/simul1.html
*****, we got our login details at school and the teacher ****zed them up, and I was logged in as this really clever girl ;D
She wasnt so clever when the teacher walked over and stressed :]
JESUS CHRIST I JUST DONE IT ALL :@! and it MESSED UP AND CLOSED IE *** :/
erm i remember solution for 2nd one is 6 + 6
x=5 in first one and 4got second 1 ;S
First one, Times everything on top by 7 and everything on bottom by 3. That will cancel the x's out and will leave 56y = -7 and -18 y = 141. Then you add the 56 and 18 (Two - = +) and that gives you 74, so 74y = (Add the -7 and 141 so its 134). Then you work out y so y = 134/74 = 1.81 re-occuring, which sounds really wrong so don't take my word on that LOL. Other way is to substitute, so you find out Y = Something by moving the other digits to the other side, and then you substitute that into the other one by replacing Y with what you get. It sounds long so I'm not sure. The ones right at the bottom, I'm too tired to explain right now lol, good luck!
1st 4....
check them to ake sure they are rght, i may have lied ;)
1. x = 5 y = -2
2. p = 6 q = 4
3. When p = 4, q = 2 and when p = 5, q = 4
4. x = -2.4 and y = -5.5
Fine ill do it again...
PART ONE
___________________________________________
3x+8y=-1 ------- Equation 1
7x-6y=47 ------- Equation 2
(1)x3 -- 9x+24y=-3
(2)x4 -- 28x-24y=188
(28+9)x=37x -- (188+(-3))=185
37x = 185
x = 185/37
x = 5
Substitute x=5 into equation 1
3x+8y=-1
15+8y=-1
8y=-16
y = -2
So u can figure rest out
Orite, He did the Y's, i did the X's. If you do that method but with Y's then you get the answer yeahh.