Maths paper II

Barnstorm · 08-06-2009 12:55PM #1

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 · 08-06-2009 12:59PM

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

;):p:p

Stench Blossoms · 08-06-2009 01:05PM

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 · 08-06-2009 02:55PM

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 · 08-06-2009 02:59PM

Yup, 96 was the answer.

Sighface · 08-06-2009 03:13PM

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 · 08-06-2009 03:27PM

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 · 08-06-2009 03:35PM

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 · 08-06-2009 03:36PM

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 · 08-06-2009 03:38PM

ya rotation 360 degrees is the same as a translation

peanuthead · 08-06-2009 03:39PM

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

jumpguy · 08-06-2009 03:42PM

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 · 08-06-2009 03:58PM

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 · 08-06-2009 04:06PM

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 · 08-06-2009 04:08PM

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 · 08-06-2009 04:09PM

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 · 08-06-2009 04:09PM

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 · 08-06-2009 04:12PM

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 · 08-06-2009 04:15PM

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 · 08-06-2009 04:15PM

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 · 08-06-2009 04:16PM

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

daisy17 · 08-06-2009 04:19PM

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 · 08-06-2009 04:22PM

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 · 08-06-2009 04:22PM

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 · 08-06-2009 04:22PM

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 · 08-06-2009 04:23PM

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 · 08-06-2009 04:29PM

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

j'aime · 08-06-2009 04:33PM

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 · 08-06-2009 04:38PM

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

GirlsAloud · 08-06-2009 04:39PM

Welll I've failed my maths.

ah well... && CSPE was a bit easy like.
xxxxx

daisy17 · 08-06-2009 04:46PM

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

Maths paper II

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