Maths CIE 2013 oct/november Paper 21 help?!

[.Luke.]

the train speed was 40m/s ? i then took 120m/40mps which gave me 3 seconds then the width of the bridge was 20m and the whole train would take 1.5seconds to go through it.. so 3+1.5=4.5 seconds?

 

[Hamzeh S]

the last probability question about 2 cars was it 20/50 * 19/49 or smthn like that?

 

[Hamzeh S]

A* boundary prediction if paper 41 was not so hard like average? is it going to be 170-175 or 175-180 ?

 

[Al-Anoud]

the last probability question about 2 cars was it 20/50 * 19/49 or smthn like that?

o.o i got a huge number. Something like 345/2034

 

[Al-Anoud]

A* boundary prediction if paper 41 was not so hard like average? is it going to be 170-175 or 175-180 ?

We can only predict this AFTER we give the exam ._.

 

[Al-Anoud]

the train speed was 40m/s ? i then took 120m/40mps which gave me 3 seconds then the width of the bridge was 20m and the whole train would take 1.5seconds to go through it.. so 3+1.5=4.5 seconds?

Did the width of the bridge matter?

 

[joanna omar]

Did the width of the bridge matter?

I actually got it 60 sec

 

[joanna omar]

what was the final answer for the hemisphere ?

 

[Aerodan]

For that train question, I got 66.666..7, and for the question regarding the hemisphere, I got 1780, as did many of my classmates. What did you guys get for the simply ing question 3^x=(4th root of 3^5) if you can remember? I got 5/4.

 

[zeyad]

For that train question, I got 66.666..7, and for the question regarding the hemisphere, I got 1780, as did many of my classmates. What did you guys get for the simply ing question 3^x=(4th root of 3^5) if you can remember.

Correct

 

[Hamzeh S]

What did u guys get for the last probabilty question about getting 2 red cars?

 

[jsjhdjejf]

kite : 73.7
hemisphere question k= 486
train 3.5 sec

 

[Hamzeh S]

Guys if in the hemisphere question i got the total volume right but forgot to divide by 2 thus got a wrong answer how many marks will i lose ?
and in the ratio of airplane model to real airplane i converted m3 to cm3 by multiplying by a 1000 instead of 1 million so i got a wrong answer how many marks will i lose on this on ?

 

[ryanfarooqi]

How many marks do you lose for not converting?

 

[joanna omar]

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

 

[ryanfarooqi]

what was the answer for the model plane ratio 1:?

 

[joanna omar]

what was the answer for the model plane ratio 1:?

it was 1:335000 somthing like thaat I dont remember how abt the C cordinates ?

 

[ryanfarooqi]

it was 1:335000 somthing like thaat I dont remember how abt the C cordinates ?

i forgot the coordinate but how did you take out the ratio?

 

[joanna omar]

i forgot the coordinate but how did you take out the ratio?

I dont remember the question of ratio but if u rmememebr the values just tell me and I would work it out

 

[ryanfarooqi]

I dont remember the question of ratio but if u rmememebr the values just tell me and I would work it out

Yeah bcuz ur value is really big and they only asked the scale for the small plane by the 1:n it was simple as that.