Right im a bit retarded when it comes to Maths, Prob somthing to do with me not getting along with the teacher i had for it in comp and i had the same teacher right through

Anyway got a simultainous equation to do and not sure if i got it right, so just want someone to tell me what they got for it

4a+6b=181
4a+2b=100

I know its simple as as the top and bottom both have same number etc but i just want to double check i got the right answer other wise it fooks up a load of other stuff

 

Just answer as follows:

"I cannot answer this question as it is against my religious principles."

Then sue them if they don;t give you full marks

 

Take the binary number on the first and second peramitive of the equasion, then muliply it by 2.974 and take the lowest derogative from the remaning odd numbers.
This will give you the the highest calorific value of the lower number set.

 

Rhys I got

A = 14.875
B = 20.25

That what you made it?

 

I concur whole-heartedly, although I would have expected at least a kiss at the end of the 1st date.

 

i did it in mi head and got that phil, well cant be arsed reaching for a piece of paper

yes lucky me i have a maths exam at 9am 2moz morning

 

Yeah got B at 20.25 But i think i have fooked up a How did u get A mate?

 

I got the same.

Brings back some proper old memories that does!

 

i got

A = 20.25

B = 14.875

 

substitute it back into the equation

so use your value of B and multiply it by two (2B), which leaves u with this

4A + 40.5 = 100

4A = 100 - 40.5

4A = 59.5

A = 59.5/4

A = 14.875

HTH

 

Of course PMSL trying to get back into it.

This gotta be one of the best sites going Right least i can carry on now with it, cheers peeps though i might be back to ask for some more help

 

Rawli, in your head? Fuck off

Okay, you firstly take the 2nd line from the top

4a + 6b = 181
MINUS
4a + 2b = 100

Leaving 4b = 81

Therefore 1B = 20.25

Now.....take this back to the SECOND equation (easier).

So 4a + 2B = 100

So, 2B os 20.25*2 (40.5).

100 - 40.5 = 4a
Giving A = 14.875


Now, run these two figures through the top equation to chekc they work.

4a + 6b = 181

4a = 59.5
6b = 121.5

So....121.5 + 59.5 = 181

So the values worked out are correct.

Its much easier to follow when written on paper, hope ya can see how i got it mate!

 

Rhys,

I did it this way:

4a + 2B = 100

So........ 4a = 100-2b

.... a = 25-1/2b

Which means:

4(25-1/2b) + 6b = 181

Mutiply out.........

100-2b+6b = 181

100+4b = 181

4b = 81

b = 20.25

Then just input that into the other equation:

4a + 40.5 = 100

4a = 59.5

a = 14.875


All I keep seeing is that line at the top of the exam paper that says:

"Don't forget to show ALL your work"

 

believe it or not i barely passed A level maths too


think it was due to lack of work though

now logs are a bitch

 

The only problem with Phils way I can remember is when you have different letter values in each equation, so you can't subtract.

In this case, it's not a problem.

 

I failed A-level maths

Got a U at AS level lolol....quality, sorted my act out since i been at uni though, can even do calculus *just* LOL. It being an engineering degree theres crap loads of maths formulas etc, so im getting there now.

Rich, indeed. In that case you multiply everything up till you have a common factor, and then add, or subtratc whichever

 

Cheers peeps, Maths is my week point on my course at uni, somthing i really need to sit down and think about.

Trying to do this course work as its gotta be in for next Friday

 

then u just multiply them by a common factor to make them the same and voila

 

#


tell me about it, im doin a similar course remember lol

i got an A at AS

found my reports from AS saying that i was a good student on for A/B at A level

got C and 2Es

 

Rhys,

I still have all my A-level advanced stuff sitting around, so if you need help, just give me a shout, and I can scan/mail you most stuff.

 

Cheers Rich mate that would be cool Will let u know if i get stuck on anything more.


lol i didnt take A level Maths, infact i got a D for GCSE in it. Just goes to show how much im learning at the moment agian now. Still all good fun though

 

Hi peeps im stuck on another fooker

4x+6Y=230
x+Y=40


Help pleaseeeeeeeee lol nearly done now after this fooker

 

x = 5
y = 35

 

cool thats what i got, but didnt think it looked right but as long as someone got the same im happy, Poxy simultanious equations lol

 

If your ever unsure to whether its correct,

if u put the values that you have calculated into either (or both for piece of mind) of the equations the answer will always be correct. this is always good as it means you cant be wrong, Most of the marks awarded for simulataneous equations is for the working out, as the answer can simple at times

 

4x + 6y = 230 --> [1]
1x + 1y = 40 --> [2]

Multiply [2] by 4, to get an equal coefficient of x:

4x + 6y = 230
4x + 4y = 160

Subtract:

2y = 70 --> y = 35

Substitute into [1]:

4x + 6(35) = 230 --> 4x + 210 = 230 --> 4x = 230 -210 = 20 --> x = 5

I still remember it, despite it being last millennium that I did A-Level Maths!

 

Quiet fun to revive old knowledge, I must confess I had forgot about it but it quickly got back into my head after some excellent tutorials on here.

 

Fook me, I had enough trouble with this today!!!........


P = L x G
_________
A

 

what a load of fooking bollox that is

 

Didn't understand any of that.

Anyone care to explain

 

LOL aint Maths great

To be fair its quite good when u get into it, but if u get stuck u fookin get stuck. Not like when your wrighting a report u can talk bollocks around it