Maths paper II

Barnstorm

How did you find maths II? I couldn't figure 1 part (b) out, the jeweller. I got 1.92 rings... Something tells me that's very wrong.

beano-lawd

i got 96 anyway and a few others in my year did so 96 is the answer ;):p:p

Stench Blossoms

beano-lawd wrote: »

i got 96 anyway and a few others in my year did so 96 is the answer ;):p:p

Just because you and a few others got that doesn't make it the right answer.

mle1324

Barnstorm wrote: »

How did you find maths II? I couldn't figure 1 part (b) out, the jeweller. I got 1.92 rings... Something tells me that's very wrong.

is this higher or ordinary your on about?

Ambrosia

Yup, 96 was the answer.

Sighface

got 96 myself at least that means i got one question right the first 3 q were ok and the last 3 were tough others said different

partyatmygaff

Answer is definitley 96 alright.

I have all my answers here.
1
A 462cm3
Bi €9600
Bii 96
Biii €20


Ci 5625 pi
Cii 13%(Not too sure tbh)

2
A 3/2 , -5/2 (Wtf? Checked it many times)
b Theorem
ci Verifying points, I got that fine
cii 3x-2y+6=0
ciii Weird looking diagram, triangle bisected by the x axis(?)
civ 7.5cm2

3
ai 36o
aii 144o

bi Construction (Messed up tiny bit, maybe 7 marks)
bii Rotation, Axial, Translation

ci Proof, Forgot what I said
cii Proof, Forgot what I said but it was probably 5/10 material

4
ai 72o opposite angles
aii 108o same arc

bi Theorem
bii ¦cb¦= 14

ci Proof(Easy got it right)
cii Tough maybe 5/10

5
a 5
bi 41m
bii 33o

ci 32m
cii 30m

6
a x=9

bii 51.9kg

ciii 50 something thousand
civ 28%

jumpguy

Crap, I got 9.6!! I found the area and volume question to be surprisingly the hardest out of the bunch. The log tables were absolute ****!!! I spent most of my time on that question trying to figure what the tiny blobs were. I blundered all over Question 1.

Also, there was no formula for the hemisphere so I just put the one for the sphere over 2. It still gives the same answers but would I lose marks for incorrect formula?

You'd think for 103 Euro the goddamn SEC would give us decipherable log tables! What a joke.


The rest of the questions were grand out. My histogram in question 6 was dodgy. I had to kinda guess Question 5 (c) (i) and I just assumed the triangle was isosceles so I could carry my answer to part 2. Couldn't figure out Question 4 (c) (ii).

Another question for ye for question 3 (b) (ii). I said image C is Rotation 360 Degrees. Technically, that's correct, isn't it? Would I get marks?
It was actually tougher than paper 1.

On a brighter note all the theorems I predicted came up. The parellogram and equiangular triangles. Also, the predicted circum-circle. I think I've gotten a B overall now.

beano-lawd

partyatmygaff wrote: »

Answer is definitley 96 alright.

I have all my answers here.
1
A 462cm3
Bi €9600
Bii 96
Biii €20


Ci 5625 pi
Cii 13%(Not too sure tbh)

2
A 3/2 , -5/2 (Wtf? Checked it many times)
b Theorem
ci Verifying points, I got that fine
cii 3x-2y+6=0
ciii Weird looking diagram, triangle bisected by the x axis(?)
civ 7.5cm2

3
ai 36o
aii 144o

bi Construction (Messed up tiny bit, maybe 7 marks)
bii Rotation, Axial, Translation

ci Proof, Forgot what I said
cii Proof, Forgot what I said but it was probably 5/10 material

4
ai 72o opposite angles
aii 108o same arc

bi Theorem
bii ¦cb¦= 14

ci Proof(Easy got it right)
cii Tough maybe 5/10

5
a 5
bi 41m
bii 33o

ci 32m
cii 30m

6
a x=9

bii 51.9kg

ciii 50 something thousand
civ 28%

pretty sure ¦cb¦ was 10.5

beano-lawd

ya rotation 360 degrees is the same as a translation

peanuthead

dont be doing this to yourselves!! At least until after ALL the exams are over!!

jumpguy

partyatmygaff wrote: »

Answer is definitley 96 alright.

I have all my answers here.
1
A 462cm3
Bi €9600
Bii 96
Biii €20


Ci 5625 pi
Cii 13%(Not too sure tbh)

2
A 3/2 , -5/2 (Wtf? Checked it many times)
b Theorem
ci Verifying points, I got that fine
cii 3x-2y+6=0
ciii Weird looking diagram, triangle bisected by the x axis(?)
civ 7.5cm2

3
ai 36o
aii 144o

bi Construction (Messed up tiny bit, maybe 7 marks)
bii Rotation, Axial, Translation

ci Proof, Forgot what I said
cii Proof, Forgot what I said but it was probably 5/10 material

4
ai 72o opposite angles
aii 108o same arc

bi Theorem
bii ¦cb¦= 14

ci Proof(Easy got it right)
cii Tough maybe 5/10

5
a 5
bi 41m
bii 33o

ci 32m
cii 30m

6
a x=9

bii 51.9kg

ciii 50 something thousand
civ 28%

Question 2 (c) (ii)
I dunno about that. Were you not meant to use the points to get it in the form y-y1=m(x-x1)? Using the perpendicular slope of the line L. I dunno what you mean by the triangle bisected by the x axis. My triangle was fairly straight forward.

Eoin MurMur

As I expected it was easier than paper 1 but I ended up leaving some q's blank because SOMEHOW I lost a load of time somewhere and ended up having to skip some of the harder ones i could have potentially got marks in.

I thought the jewler question was a bugger and ended up leaving most of that blank. And the one with the under side of the baloon I probably could have got that If i had had more time.

I ended up having to start the histogram over again 3 times :pac: Annoyed the hell out of the examiner seeing as put my hand up for graph paper like 5 times throughout the exam :rolleyes::p

The one in question 2 with the drawing of the lines was annoying I thought you could use any number you wanted for the filling in thing and ended up with 1.5 as my area

All in all I thought it was graaaaaaaaaand. I'd say I got a B

iheartboosh

jumpguy wrote: »

Crap, I got 9.6!!.

Same here
I'm hoping they give us most of the marks for just having it one decimal place off, because how I worked it out was right

Uhh..thank god maths is done and over with
Now to worry about business tomorrow -_-

lijh

jumpguy wrote: »

Question 2 (c) (ii)
I dunno about that. Were you not meant to use the points to get it in the form y-y1=m(x-x1)? Using the perpendicular slope of the line L. I dunno what you mean by the triangle bisected by the x axis. My triangle was fairly straight forward.

My triangle included the Y axis, most of L and most of K. It went down from 4.5 on the y to -2, and to 3 on the X

I got an area of 9.75 units squared

Eoin MurMur

iheartboosh wrote: »

Same here
I'm hoping they give us most of the marks for just having it one decimal place off, because how I worked it out was right

Uhh..thank god maths is done and over with
Now to worry about business tomorrow -_-

As far as I know they give 7 out of 10 for correct method but wrong answer but I could be wrong.

daisy17

These are the answers I got today!!

1
A 462cm3
Bi €9600
Bii 96
Biii €20


Ci 5625 pi cm3
Cii 42%

2
A ( 1.5 , -2.5 )
b Theorem
ci The points were both on the line
cii 3x+2y=9
ciii diagram
civ 9.75 units squared

3
ai 36 degrees
aii 144 degrees

bi Construction
bii Rotation 90 degrees, Axial Symmetry, Translation

ci Proof, worked out fine
cii Proof, worked out fine

4
ai 72 degrees - opposite angles in a parallelogram
aii 108 degrees - all angles equal standing on same arc

bi Theorem
bii |cb|= 10.5

ci Proof, worked out fine
cii Tough but went back to it at the end and worked it out
Went a bit like:
|ca| = |cd| - radius of circle
|ce| = |ce| - common
|angle-ace| = |angle-dce| - shown above part c (i) (triangle abd and dbc are congruent)
therefore: triangle ace and dce are congruent
therefore: |ae| = |de|
therefore: bc bisects chord ad as either side is equal

5
a 5
bi 41m
bii 52 degrees

ci 32m
cii 29m

6
a x=9

bii 51.9kg

ciii 50 something thousand
civ 15%

jumpguy

lijh wrote: »

My triangle included the Y axis, most of L and most of K. It went down from 4.5 on the y to -2, and to 3 on the X

I got an area of 9.75 units squared

Yeah I think mine was the same.

iheartboosh

Eoin MurMur wrote: »

As far as I know they give 7 out of 10 for correct method but wrong answer but I could be wrong.

well as long as I get something I'm happy!
I'm hoping to god I don't get anything lower than a C.

lijh

daisy17 wrote: »

These are the answers I got today!!

1
A 462cm3
Bi €9600
Bii 96
Biii €20


Ci 5625 pi cm3
Cii 42%

2
A ( 1.5 , -2.5 )
b Theorem
ci The points were both on the line
cii 3x+2y=9
ciii diagram
civ 9.75 units squared

3
ai 36 degrees
aii 144 degrees

bi Construction
bii Rotation 90 degrees, Axial Symmetry, Translation

ci Proof, worked out fine
cii Proof, worked out fine

4
ai 72 degrees - opposite angles in a parallelogram
aii 108 degrees - all angles equal standing on same arc

bi Theorem
bii |cb|= 10.5

ci Proof, worked out fine
cii Tough but went back to it at the end and worked it out
Went a bit like:
|ca| = |cd| - radius of circle
|ce| = |ce| - common
|angle-ace| = |angle-dce| - shown above part c (i) (triangle abd and dbc are congruent)
therefore: triangle ace and dce are congruent
therefore: |ae| = |de|
therefore: bc bisects chord ad as either side is equal

5
a 5
bi 41m
bii 52 degrees

ci 32m
cii 29m

6
a x=9

bii 51.9kg

ciii 50 something thousand
civ 15%

For the last 2, i got 59,000 and 24%?

kristyz

got 9.75 units too thought it was wrong but ppl seem 2 hav got dat 2... hoping for a C ..:D

daisy17

lijh wrote: »

For the last 2, i got 59,000 and 24%?

Yeah sorry my answers for the ogive are probably wrong - I'm terrible at drawing them!
I remember I got between 61 and 72 for part c (iv) so that was 11/75 x 100/1 which gave me a number I rounded up to 15? It was probably wrong though

Eoin MurMur

For the ogive on I went up and across and got 52 and 72 and took them away from eachother

then got that as a percentage....Can't remember the answer though

Any marks for me there?

Hyland_Boy

partyatmygaff wrote: »

Answer is definitley 96 alright.

I have all my answers here.
1
A 462cm3
Bi €9600
Bii 96
Biii €20


Ci 5625 pi
Cii 13%(Not too sure tbh)

2
A 3/2 , -5/2 (Wtf? Checked it many times)
b Theorem
ci Verifying points, I got that fine
cii 3x-2y+6=0
ciii Weird looking diagram, triangle bisected by the x axis(?)
civ 7.5cm2

3
ai 36o
aii 144o

bi Construction (Messed up tiny bit, maybe 7 marks)
bii Rotation, Axial, Translation

ci Proof, Forgot what I said
cii Proof, Forgot what I said but it was probably 5/10 material

4
ai 72o opposite angles
aii 108o same arc

bi Theorem
bii ¦cb¦= 14

ci Proof(Easy got it right)
cii Tough maybe 5/10

5
a 5
bi 41m
bii 33o

ci 32m
cii 30m

6
a x=9

bii 51.9kg

ciii 50 something thousand
civ 28%

heres wat i got
1.c)ii) - 42%
2.c)ii) - 3x+2y=9
2.c)iv) - 9.75
4.b)ii) - 10.5
5.b)ii) - 52
6.b)ii) - 60.38
6.c)iv) - 25%

Namlub

Uhh I got 9.6 rings as well, and then I just rounded that down to 9 because you can't have .6 of a ring like! Bloody hate maths...

millington

partyatmygaff wrote: »

4
bii ¦cb¦= 14

I got 10.5?

Found the paper OK. Seemed tough first time over but got everything except one question second time. Just about enough time!

swimminggurlX

Though it was a difficult paper. But I was not dying over it like in the pre
Buisness tommorow :mad:

j'aime

yeah paper was definately tough, although every question was approachable if I had the time to think it over .. all in all maths was very tough this year!
I wanted an a .. have to settle for a B !!

Dub973

Can somebody do the very first question out fully for me please?

GirlsAloud

Welll I've failed my maths. ah well... && CSPE was a bit easy like.
xxxxx

daisy17

Maths Higher Level, Paper 2, Question 1, B The gold ring question

(i)
4 x 3 x 2 = 24 cm3 of gold
1cm3 = €400
So 24 x 400 = €9600

(ii)
Cannot use cm3 volume as measurement is in mm.
4 cm = 40 mm
3 cm = 30 mm
2 cm = 20 mm

40 x 30 x 20 = 24000
24000 divided by 250 = 96 rings

(iii)
Cost of block = €9600
No. of rings = 96
9600 divided by 96 = €100 per ring
€120 - €100 = €20 profit

Dub973

daisy17 wrote: »

Maths Higher Level, Paper 2, Question 1, B The gold ring question

(i)
4 x 3 x 2 = 24 cm3 of gold
1cm3 = €400
So 24 x 400 = €9600

(ii)
Cannot use cm3 volume as measurement is in mm.
4 cm = 40 mm
3 cm = 30 mm
2 cm = 20 mm

40 x 30 x 20 = 24000
24000 divided by 250 = 96 rings

(iii)
Cost of block = €9600
No. of rings = 96
9600 divided by 96 = €100 per ring
€120 - €100 = €20 profit

Ok I got that but can you do section A of question 1 out fully for me

sFitz

Namlub wrote: »

Uhh I got 9.6 rings as well, and then I just rounded that down to 9 because you can't have .6 of a ring like! Bloody hate maths...

Em, sorry but you should have rounded the 9.6 uuuup to 10, Ah well

GirlsAloud

sFitz wrote: »

Em, sorry but you should have rounded the 9.6 uuuup to 10, Ah well

How though??? because you can only physically have 9.6 rings..... to have a 10th ring the ring would have to be like smaller or something... xxxxx

Dub973

Well can anyone show me how to do part A of question 1

RHRN

sFitz wrote: »

Em, sorry but you should have rounded the 9.6 uuuup to 10, Ah well

Em,no.
As you are wrong by a factor of 10, I'm assuming you didn't use 1cm(3)=1000mm(3) but 1cm(3)=100mm(3).
The answer was 96, as my maths teacher, who did the paper, said.

Dub973

Anybody? Question 1 part A

RHRN

Dub973 wrote: »

Well can anyone show me how to do part A of question 1

You have to do 2piRsquared (curved surface area) plus piRsquared (the flat circle at the top)
To the nearest whole number I think it was..... something around 420? I don't really remember though..

EDIT@ Ah, 462 that was it. Well....I got 2 numbers right :P

daisy17

Dub973 wrote: »

Ok I got that but can you do section A of question 1 out fully for me

Oh sorry I misread ur q! Well I hope someone benefits from that explanation!

Maths Higher Level, Paper 2, Question 1 A

Diameter = 14
∴ radius = 14 ÷ 2 = 7

Total Surface Area =
2∏r² + ∏r²
= (2 × 3.14 × 7²) + (3.14 × 7²)
= (2 × 3.14 × 49) + (3.14 × 49)
= 307.72 + 153.86
= 461.58
≈ 462cm²

There you go!

jclol

5bii i got the angles but for some insane reason i did something random to do with a over sin a = b over sin b... but i used 51.5 degrees and stated how i got it so do i still get full marks for it?(yeh i know it rounds up but still :P)

6 iv - never got percentage only got the amount xD how many marks? :x

Thought it was alright, panicked a bit during the exam but i think its a bit unfair since they have implemented so many new "practical" things this year where we have less practise :x Hoping for the A tho. :

soccymonster

omg i nearly died in the maths exam..
I was doing trigonometry and my answers all kept coming up as a negative which was obviously wrong as you cant have -2.567metres. I was totally sure I was using the correct method and everything. So I just went on to the next question hoping and praying that when i came back to trig that it would work out.. so when i came back to it, it still wasn't working out for me..
Until the last 15mins when I saw that my calculator was set to radians and not degrees! ugh!.. So I just wnet back and in a rush of panic did the method and answers!.. PHEW!:P

RHRN

jclol wrote: »

6 iv - never got percentage only got the amount xD how many marks? :x

Lose blunder of 3.. i think.

Dub973

daisy17 wrote: »

Oh sorry I misread ur q! Well I hope someone benefits from that explanation!

Maths Higher Level, Paper 2, Question 1 A

Diameter = 14
∴ radius = 14 ÷ 2 = 7

Total Surface Area =
2∏r² + ∏r²
= (2 × 3.14 × 7²) + (3.14 × 7²)
= (2 × 3.14 × 49) + (3.14 × 49)
= 307.72 + 153.86
= 461.58
≈ 462cm²

There you go!

Ok question 1 part A is worth ten marks

I forgot t do the area of the disc on top. Any ideas how many marks I would get out of 10 for that?

jclol

RHRN wrote: »

Lose blunder of 3.. i think.

Meh hopefully... its marked on graph so.

Some strange feeling is telling me i will get something fag like 84%


To those of you concerned over 1B and the 2C graph question :

Your only penalised for your mistake once so even if you got the A part (or the line wrong) once you do the correct method with your given answer to the previous, you get full marks for the rest of the question so in most cases you'll only loose 3 marks. Usually thats how it is anyway - Same in business so dont stress tomorrow

soccymonster

Dub973 wrote: »

Ok question 1 part A is worth ten marks

I forgot t do the area of the disc on top. Any ideas how many marks I would get out of 10 for that?

oh s**t same!

Dub973

Dub973 wrote: »

Ok question 1 part A is worth ten marks

I forgot t do the area of the disc on top. Any ideas how many marks I would get out of 10 for that?

Anybody any ideas then

jclol

Dub973 wrote: »

Ok question 1 part A is worth ten marks

I forgot t do the area of the disc on top. Any ideas how many marks I would get out of 10 for that?

No marks for formulae so not sure.

3 is attempt marks and since you worked out the volume then probably 5/10 since you did half of it i guess? :X

3 at worst, 5 at best.

adidas speed

anyone else get 10.5 for that triangle one just after that theorem???

jumpguy

Hey people lets relax and focus on something happier. What about CSPE, eh? That Bono one was a toughy, wasn't it?

partyatmygaff

adidas speed wrote: »

anyone else get 10.5 for that triangle one just after that theorem???

I wrote 10.5 and stupidly then put down 14 afterwards

Feel like such an idiot

Eoin MurMur

jumpguy wrote: »

Hey people lets relax and focus on something happier. What about CSPE, eh? That Bono one was a toughy, wasn't it?

That one was by far harder than the whole maths exam