Maths CIE 2013 oct/november Paper 21 help?!

[ryanfarooqi]

small planes scale was 1200cm^3 and the big plane was i think 14400m^3 correct me if i am wrong

 

[bunnyses]

Guysss how abt the coulmn vector Q where they wanted the coordinates of C ?

i got the coordinates (17,13)
hbu?

 

[joanna omar]

i got the coordinated (17,13)
hbu?

yaaaaaay same

 

[snipex]

I asked mechanics teacher about the train question and he said the answer is 3.5 sec

 

[bunnyses]

I asked mechanics teacher about the train question and he said the answer is 3.5 sec

hahaha kamal? rlly out of all the teachers

 

[oahmed64]

The width of the bridge will only matter if the train passes under it in such a way so it crosses it horizontally but the width won't matter if it passes parallel to it.so the length of the train is 120 divide that by the width of the bridge which is 20 for each 20 m of the train you will get 6.to find the time it takes for each 20 m of the train to pass under the bridge divide 20 by 40 you'll get 0.5,there are 6 parts of 20 m in the train so if you multiply that by 0.5 you'll get 3 seconds

 

[snipex]

The width of the bridge will only matter if the train passes under it in such a way so it crosses it horizontally but the width won't matter if it passes parallel to it.so the length of the train is 120 divide that by the width of the bridge which is 20 for each 20 m of the train you will get 6.to find the time it takes for each 20 m of the train to pass under the bridge divide 20 by 40 you'll get 0.5,there are 6 parts of 20 m in the train so if you multiply that by 0.5 you'll get 3 seconds

I dont think they this is the answer because they wont bring such complicated question. Right?

 

[snipex]

hahaha kamal? rlly out of all the teachers

So you know him?

 

[oahmed64]

I dont think they this is the answer because they wont bring such complicated question. Right?

What complicated about that ? I'm making it seem complicated from the description but it's easy. Oh and I also think they won't make it as easy as 140/40 don't u think?

 

[snipex]

What complicated about that ? I'm making it seem complicated from the description but it's easy. Oh and I also think they won't make it as easy as 140/40 don't u think?

It was 2 marks cool down.

 

[bunnyses]

So you know him?

yyea i do o: he teaches mechanics in my school

 

[snipex]

Also the questio was sking about time of train to pass the bridge so I couldnt think of any way to solve it except by adding 120 and 20 then dividing by 40

 

[snipex]

yyea i do o: he teaches mechanics in my school

So you are in alwadi?

 

[bunnyses]

So you are in alwadi?

maaybee
nd btw mr. ikram told me the answer is 4.5
i got it 2.5

 

[snipex]

Whaaaat how is it 4.5!!!

 

[bunnyses]

Whaaaat how is it 4.5!!!

i doont knoww o
maybe he meant 3.5

 

[oahmed64]

It is def 3

 

[Adil Twahir]

does anyone have mathematics paper 2 for oct/nov 2013 in pdf or any form?

 

[ryanfarooqi]

http://olevel.sourceforge.net/papers/0580/0580_s13_qp_41.pdf
question 9(b) what the hell is this question!?!?!

 

[Hamzeh S]

http://olevel.sourceforge.net/papers/0580/0580_s13_qp_41.pdf
question 9(b) what the hell is this question!?!?!

find fg(x) which is f(2x+7) which is equal to (2x+7)^2+(2x+7)-3

so 4x^2+30x+53

so p=4 q=30 and r=53