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# Maths Unit 2 Edexcel Modular- June 13th Tweet

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1. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Berry14)
its really annoying because i worked it out wrong but i knew how to do it, i just wrote down the wrong sign.

2y+x=5 through the point (3,7)

2y+x=5 (divide by 2)
y+x/2 = 2.5 (-x/2)
y=-x/2 +2.5

m X m perpendicular = -1
-0.5 X m perpendicular = -1 (divide by -0.5)
m perpendicular = 2

y=2x+c
7=2X3+c
7=6+c (-6)
1=c

Where are you getting the m X m perpendicular = -1 from
2. Re: Maths Unit 2 Edexcel Modular- June 13th
gradient for a perpendicular line is m X m=-1
3. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Dhibla.)
I got 560cm^2
I got that but I found out it is wrong, you might have done what I did which is forget the base because that was 100cm^2 which would have given you 660cm^2. Hope this helps
4. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Periodic Table)
I got that but I found out it is wrong, you might have done what I did which is forget the base because that was 100cm^2 which would have given you 660cm^2. Hope this helps
Oh, thanks... That is what I done. Hmph. There goes my A*
5. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Periodic Table)
I got that but I found out it is wrong, you might have done what I did which is forget the base because that was 100cm^2 which would have given you 660cm^2. Hope this helps
Yes it is wrong its 660cm^2
6. Re: Maths Unit 2 Edexcel Modular- June 13th
Everyone grade boundaries are as follows 52-A* 42-A 34-B 28-C as this paper was not as easy as march because of the last question perpendicular line question which was rearranged funnily and i believe that the grade boundaries will stay the same as both this paper and the march paper wore similar in difficulty.
7. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Cell Sap)
I think I done really bad on this paper. Was the rationalize denominator answer 2 root 6?
well edexcel accept it unsimplified as 12root6 over 6 but they prefer your answer of 2root6 with nothing on the bottom but the question was to rationalise the denominator so the best thing to do is to leave it
8. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Tarmu)
Factorise:
x^2+16
that is (x+4)(x-4) this simplify to x^2+4x-4x-16 this becomes x^2-16
9. Re: Maths Unit 2 Edexcel Modular- June 13th
Does anyone have a mark scheme for it?!
10. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by AkhiMohamed)
that is (x+4)(x-4) this simplify to x^2+4x-4x-16 this becomes x^2-16

Did you had to simplify it? I only wrote (x+4)(x-4)...
11. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Mihawk Gallio)
Did you had to simplify it? I only wrote (x+4)(x-4)...
12. Re: Maths Unit 2 Edexcel Modular- June 13th
yes I'm sure it is- It only said FACTORISE not simplify.
I think...
13. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by subjectman10)
yes I'm sure it is- It only said FACTORISE not simplify.
I think...
Phew, Thanks mate, so do I.

the 0.25 dot question was kinda easy

Here's explanantion =

10x2.5555555
- x 0.2555555
-----------
2.3
---- x 10 = 23/90
9

Did you had to write 23/90 'x' though?
14. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by dan18)

Saved me, How many marks was that question
15. Re: Maths Unit 2 Edexcel Modular- June 13th
for the unit question I accidentally

I did

515 x
0.35
00000000

And put 180,250, Will I still get marks If I accidentally put 0 on my answer and working?

I know I won't get full marks
16. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Mihawk Gallio)
for the unit question I accidentally

I did

515 x
0.35
00000000

And put 180,250, Will I still get marks If I accidentally put 0 on my answer and working?

I know I won't get full marks
You should for your working out. It was a 4 mark question if I remember clearly :P
17. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by zed963)
You should for your working out. It was a 4 mark question if I remember clearly :P
Yes why was there so many marks for that question?!
18. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Mihawk Gallio)
Phew, Thanks mate, so do I.

the 0.25 dot question was kinda easy

Here's explanantion =

10x2.5555555
- x 0.2555555
-----------
2.3
---- x 10 = 23/90
9

Did you had to write 23/90 'x' though?
no, just 23/90 was enough
19. Re: Maths Unit 2 Edexcel Modular- June 13th
I really really want to know the grade boundaries! does anyone know them? Im dieing here -.-
Last edited by Berry14; 16-06-2012 at 13:44.
20. Re: Maths Unit 2 Edexcel Modular- June 13th
(Original post by Berry14)
I really really want to know the grade boundaries! does anyone know them? Im dieing here -.-
For an A* its most likely around the 50 mark or 90%

You'll have to die until August the 23rd I guess
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