***JC 2014 Maths Paper Two - Mon. June 9th 2014 - all levels***

MangoMachine

Liordi wrote: »

Got the slope to be 1/3
1, -2 wasn't on the line.
y - y1 = m ( x - x1)
As they're parallel m is the same

y - (-2) = 1/3 (x - 1) (3)
3y + 6 = x - 1
x - 3y - 7 = 0

I got the slope to equal 1/6

Msrebeckyxo

Ah that was grand! Really happy as i think they were both easier papers than the mocks! Would love a B in those! Thank you SEC

yaEHya

Still raging about this test.least I did well in Cspe ")

smiles_1998

Slightly harder than Paper 1 imo but then again I hate Paper 2 with a passion...
That stupid swing question though :rolleyes:
But other than that it was mostly okay

MangoMachine

Anyone else get 1:8 for the final ratio?

Beca19

MangoMachine wrote: »

Anyone else get 1:8 for the final ratio?

A few of my friends did I got 7:8 or 8:7 can't remember

MangoMachine

How did you do it? I'm totally confused!

Beca19

MangoMachine wrote: »

How did you do it? I'm totally confused!

The formula for that weird shape was in the log book beside the cone! :P then it was something like 146pi:124pi or something can't remember the numbers but then I cancelled it down and it was 8:7, no idea if I'm right tho hahah

MangoMachine

Beca19 wrote: »

The formula for that weird shape was in the log book beside the cone! :P then it was something like 146pi:124pi or something can't remember the numbers but then I cancelled it down and it was 8:7, no idea if I'm right tho hahah

Oh I think it must be 7:8... I found the small cone that was cut out to create the frustum but never took it away from the big one. Wonder will I get any marks?

Beca19

MangoMachine wrote: »

Oh I think it must be 7:8... I found the small cone that was cut out to create the frustum but never took it away from the big one. Wonder will I get any marks?

Ah yeah they won't give you zero anyway

yaEHya

If you use the wrong formulas for questions would u get any marks?

Fifii

For the Shopping question should I have expressed it as a percentage or fraction or just as the number?:( I did miserably in that exam. Paper 2 should be my best:(

Msrebeckyxo

I broke it down into 3:2 i think?? I divided the two bigger numbers by 7 i believe, i should get attempt marks anyways though as i had the same bigger numbers as everyone else!

ElmW13

MangoMachine wrote: »

Anyone else get 1:8 for the final ratio?

I got 1:1 1/7

It was the ratio of the frustum (spelling??) to the original cone. You need to get the volume of the cone cut from the top and minus it from the total cone to get the volume of the frustum.
Volume of frustum:volume of original cone
Cancel and it should equal 1:1 1/7

S_Hick12

ElmW13 wrote: »

I got 1:1 1/7

It was the ratio of the frustum (spelling??) to the original cone. You need to get the volume of the cone cut from the top and minus it from the total cone to get the volume of the frustum.
Volume of frustum:volume of original cone
Cancel and it should equal 1:1 1/7

I think i got 0.875 : 1, frustrum : original cone.

luimneachabu

for that angles question, one angle was 64 degrees, what was the other one?

Pure Princess!!

Really happy with paper two!!
Who knows maybe with some divine intervention I might not fail!

MangoMachine

luimneachabu wrote: »

for that angles question, one angle was 64 degrees, what was the other one?

32 degrees I think.

luimneachabu

anyone else think they did much better on paper 1?

Macky77

the answer to last question was 1:8

Liordi

Macky77 wrote: »

the answer to last question was 1:8

7:8 or 1: 8/7

Macky77

Liordi wrote: »

7:8 or 1: 8/7

we'll see when the exam papers are published on examinations.ie

i could well be wrong tho

Oisin4

Liordi wrote: »

I'm pretty sure I got 15 for the first and 12.6 for the second.

Same

Fifii

luimneachabu wrote: »

anyone else think they did much better on paper 1?

100% certain:) Just wondering how people went about proving that the rectangle was a rectangle and also does AAA qualify as a similar triangle?:)

MangoMachine

Oisin4 wrote: »

Same

How?

Oisin4

I thought paper 2 was easier. What was the answer to the swing question? for the last questiongot the volume of the frustum just by removing the volume of the smaller cone?

Liordi

Fifii wrote: »

100% certain:) Just wondering how people went about proving that the rectangle was a rectangle and also does AAA qualify as a similar triangle?:)

I used congruent triangles to prove it.
AAA implies the triangle is similar and not congruent, (i.e all same angles, lengths may not be the same size)
Can prove a triangle is congruent by:
ASA
SAS
SSS
RHS

Liordi

Oisin4 wrote: »

I thought paper 2 was easier. What was the answer to the swing question? for the last questiongot the volume of the frustum just by removing the volume of the smaller cone?

Same, paper 2 was a lot easier.
Which part of the swing question?

For the frustum question; the formula was in the log tables and you just let one equal the other, say 147:168, can't remember the exact figures.

Fifii

Liordi wrote: »

I used congruent triangles to prove it.
AAA implies the triangle is similar and not congruent, (i.e all same angles, lengths may not be the same size)
Can prove a triangle is congruent by:
ASA
SAS
SSS
RHS

Yay! So is that (AAA)what you used for question where it asks if the two triangles were similar?:)

luimneachabu

anyone else use the angle 37 degrees instead of 53 for the swing question and get an answer of like 5.6?