2012 Math IGCSE

[Spakling Cynadie]

help me too pls [email protected] 0580

 

[Lost_Life]

i did paper 22 and it was easy but can anyone discuss with me the answers?( whoever has done it )

 

[Lost_Life]

um there was a question in my paper saying:
find the k in these equations of lines:
5x+4y=10
14=2y-kx

What i did is i simply rearranged them, then i put (-5) as k because it is a parallel line therefore gradients are equal right????
​

 

[Jaggia]

Guys. Help me out please. For the rotational symmetry question. for part a) i put I. for b) i put only N. not I. will I lose anything? and the inequality I got the final answer incorrect as i put 0<x<4.5. And for the function I exanded the x + 2 cubed. Will I lose anything? And what's the minimum for A*? Thanks

 

[rockerkunal]

um there was a question in my paper saying:​

find the k in these equations of lines:​

5x+4y=10​

14=2y-kx​

​

What i did is i simply rearranged them, then i put (-5) as k because it is a parallel line therefore gradients are equal right????​

​

dude!!!!!!! you were supposed to rearrange it as y=mx+c then check the m, its 5/2 or 5/4 sth, i dont remember

 

[rockerkunal]

and dudes.... was that tranformation a stretch or shear???

 

[PhyZac]

and dudes.... was that tranformation a stretch or shear???

shear

 

[kboss]

what u guys put in the box above area and volume...were we even supposed to do it ???

 

[PhyZac]

what u guys put in the box above area and volume...were we even supposed to do it ???

Nope leave it as it is !

 

[kboss]

what!? i put specifications....and were we supposed to show working for area and volume cuz i just put in the answer :/

 

[PhyZac]

what!? i put specifications....and were we supposed to show working for area and volume cuz i just put in the answer :/

dont think so we HAVE to show working !

 

[ahmedali1]

Guys. Help me out please. For the rotational symmetry question. for part a) i put I. for b) i put only N. not I. will I lose anything? and the inequality I got the final answer incorrect as i put 0<x<4.5. And for the function I exanded the x + 2 cubed. Will I lose anything? And what's the minimum for A*? Thanks

the enequality one u had to write the values of x . the answer was 1,2,3 and 4
and the function one i extended it and got 2x^3+12x^2+24x+16

 

[Razzle-Dazzle]

Guys. Help me out please. For the rotational symmetry question. for part a) i put I. for b) i put only N. not I. will I lose anything? and the inequality I got the final answer incorrect as i put 0<x<4.5. And for the function I exanded the x + 2 cubed. Will I lose anything? And what's the minimum for A*? Thanks

There is no limit for A* until they mark all the papers. They decide the grade boundaries according to how well everyone does. Lowering them if everyone screws up and vice versa.

 

[Mohammad Ahmad]

n

hey dude please send me a gist of questions which cam in the exam because i am writting the exam on tuesday and mailme at JENNY.WANG6@yahoo.com please because i am very much poor in maths so that i can at least prepar some type of questions thanks

no cheating plzz !!!

 

[diana barnieh]

Has anyone done the math IGCSE 2012 foundation tier paper yet? How did you guys think it was ?

 

[Lost_Life]

what u guys put in the box above area and volume...were we even supposed to do it ???

130, 408

 

[ahmedmo]

dude!!!!!!! you were supposed to rearrange it as y=mx+c then check the m, its 5/2 or 5/4 sth, i dont remember

5x+4y=10
14=2y-kx
y = mX+C
4y = -5X+10
y = (-5/4) X +10/4

2y = kX+14
y = (k/2) X+14/2
Hence two equations is parallel , then they have the same gradient( m)
Then k/2 = - 5/4 k = -10/4 = -2.5

 

[Mohammad Ahmad]

how much were the values for the box thing !! !?> !

 

[ahmedmo]

There is no limit for A* until they mark all the papers. They decide the grade boundaries according to how well everyone does. Lowering them if everyone screws up and vice versa.

As per syllabus 2012 it is in page 42 of43 A* minimum 90% of total marks in paper 2 + paper 4 ( paper 2 =70, paper 4 = 140)
if you get (total 180 from 200) and above for total marks then you will get A*

Percentage uniform marks are also provided on each candidate’s Statement of Results to supplement their

grade for a syllabus. They are determined in this way:

• A candidate who obtains…

… the minimum mark necessary for a Grade A* obtains a percentage uniform mark of 90%.

… the minimum mark necessary for a Grade A obtains a percentage uniform mark of 80%.

… the minimum mark necessary for a Grade B obtains a percentage uniform mark of 70%.

… the minimum mark necessary for a Grade C obtains a percentage uniform mark of 60%.

… the minimum mark necessary for a Grade D obtains a percentage uniform mark of 50%.

… the minimum mark necessary for a Grade E obtains a percentage uniform mark of 40%.

… the minimum mark necessary for a Grade F obtains a percentage uniform mark of 30%.

… the minimum mark necessary for a Grade G obtains a percentage uniform mark of 20%.

… no marks receives a percentage uniform mark of 0%.

 

[khan-12]

why do u guys take maths that u r very weak in that subject
better then take core if u feel maths extended is hard