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Maths exam IGCSE - HIGHER TIER - PAPER 3H AND PAPER 4H POST DISCUSSION.

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The last answer was 2.5 cm and the probability answer was 0.75. I'm not really in any doubt about either of these.

I think the grade boundaries will go up severely after that paper - were there any difficult questions at all? I'll still be fine though. :smile:

Reply 941

gcse2012

Original post by frog69

these are all the answers i got:

1. 4.8
2.17.4 (total mean)
3. a)30 mins
b)21 km
c)13.27 and 16.28 (what time 24km away)
d) 31.2 km/h
4. a) reflection x=1 b) rotation thing
5. 105 degrees (32tan70 something)
6. -2, 3.5 (simultaneous equation)
7. 2x2x3x5x5 (300 as product of prime factors)
8. 67 (total rain in janurary)
9.a) x+8
b) y^2 +2y-35
c) square root of v/pie times h
10.a) 78000
b) 5.4x10^5 (weight of space shuttle+station)
11. donut shape next to normal circle(sets a n c')
12. a) drew graph b) 2.4 (x^3-3X-1)
13. a) 3x^2 -3 (differentiate x^3-3x-6)
b) dy/dx=45
14. 18 people studied 1 language
15.a)32 degrees
b) 122 degrees (opposite angles in cyclic quad =180)
16. a) 7.27cm
b) 4cm (CHORDS)(7x12=6xXD, XD=10, DC=4)
17.a) 18% (HISTOGRAM)
b) 200 total ppl
18. probability=0.75
19.a) inverse function=(x+2)/3
b) gf(x)=10/3x
20. -1 or 8
21. r=2.5

regarding 3 d) was it not the distance he travelled, 39 + 39 divided by the time it took (5 hours 15 minutes) so 78 divided by 5.25 which is 14.85.....

Reply 942

Big-Daddy

Original post by gcse2012

regarding 3 d) was it not the distance he travelled, 39 + 39 divided by the time it took (5 hours 15 minutes) so 78 divided by 5.25 which is 14.85.....

No, it asked for his average speed on the way back, not during the entire trip.

Reply 943

gcse2012

Original post by Big-Daddy

No, it asked for his average speed on the way back, not during the entire trip.

stupid me the old not reading question properly .

(edited 11 years ago)

Reply 944

mostem

Original post by gcse2012

regarding 3 d) was it not the distance he travelled, 39 + 39 divided by the time it took (5 hours 15 minutes) so 78 divided by 5.25 which is 14.85.....

no from sam's house back to his house was 40km and time was like 1.25 or something so 40/1.25 is your answer s=d/t

Reply 945

gabriel 41

Original post by mostem

no from sam's house back to his house was 40km and time was like 1.25 or something so 40/1.25 is your answer s=d/t

It was 39 km and 78 min; I don't know how you've got 40 km

Reply 946

mostem

Original post by gabriel 41

It was 39 km and 78 min; I don't know how you've got 40 km

that'd be 39/1.3 right?
so your answer was 30?

Reply 947

mostem

yeah my bad 39/1.25 = 31.2

Reply 948

Coco406

Grade boundaries wouldn't go above 85 surely? Please say no!!!

Reply 949

abdirizak

Original post by Coco406

Grade boundaries wouldn't go above 85 surely? Please say no!!!

hopefully not

Reply 950

IGCSE

considering paper 1 was much harder than paper 2 the average grade boundary will probably sit where they usually do ..... 80-82% over the two papers..... I asked the head of maths at our school and he said that A* for paper 1 alone would have been around 78% and paper 2 around 84%.... so around 80-82%

Reply 951

abdirizak

Original post by Coco406

Grade boundaries wouldn't go above 85 surely? Please say no!!!

not necessarily. 4h was easier than 3h but it wasnt that easy to take grade boundaries too high

Reply 952

Emsss

Lol I reckon I got 98 on that paper haha

Reply 953

dhanp79

The paper was a joke, they didn't put in any questions that required extensive thought, should have made it at least as hard as 3H

Reply 954

ie1996

does anyone know what they think the grade boundaries for an A* will be this year?

Reply 955

Tazxx_xx

There are so many mixed opinions... Some people say 3H was hard, and some people say 4H was hard? I struggled with 3H, but I was alright with 4H but I thought that might've just been because I was stressed?
I don't know? Was 3 or 4 harder?

This was posted from The Student Room's iPhone/iPad App

Reply 956

ie1996

Original post by dhanp79

The paper was a joke, they didn't put in any questions that required extensive thought, should have made it at least as hard as 3H

why dont you shut up, if your so amazing at maths then why post unnecessary comments making other people feel bad about themselves. Both exams were extremely difficult. If you found it such a 'joke' maybe you should of taken your maths gcse early. Idiot