VCE General & Further Maths Question Thread!

[unfamila]

The answer looks to be both unless there was an earlier question which showed all of the constraints, then you could cancel out D.

[vashappenin]

Hey I was just looking through the key knowledge in the further study design for Core and I saw this dot point: Random numbers and their use to draw simple random samples from a population -
 display, appropriately summarise and describe these samples.. What exactly does it refer to and how would it crop up in a question?

[abcdqdxD]

Hey I was just looking through the key knowledge in the further study design for Core and I saw this dot point: Random numbers and their use to draw simple random samples from a population -
 display, appropriately summarise and describe these samples.. What exactly does it refer to and how would it crop up in a question?

I've done around 22 exams and I've never seen this examined (on practice exams anyway)

[robo_1337]

Part of our SAC was on it, using the random integer function on the CAS to select a random sample of provided data and summarizing it

[vashappenin]

Hey what do you guys think about doing the VCAA exams pre-2006? I was thinking of doing those as well, since they're VCAA standard as well. For anyone that's already done further did you do these exams or just do other company exams? Also, do you think it's worth re-doing the VCAA exams? I'm doing/have done some VCAA exams already, from 2009-2012 and I was thinking of re-doing them closer to the exams under strict timed conditions and all. Is that a good idea or should I just expose myself to new exams instead?
Thanks

[brenden]

Hey what do you guys think about doing the VCAA exams pre-2006? I was thinking of doing those as well, since they're VCAA standard as well. For anyone that's already done further did you do these exams or just do other company exams? Also, do you think it's worth re-doing the VCAA exams? I'm doing/have done some VCAA exams already, from 2009-2012 and I was thinking of re-doing them closer to the exams under strict timed conditions and all. Is that a good idea or should I just expose myself to new exams instead?
Thanks

I started at 2006 and worked my way up to 2011 and that was enough. I did a minimal amount of company but I think if you learn from exams properly you'll have near no improvement to make by the time you're done with the VCAA ones and a few company ones. (Why did you start at 2009?)

[vashappenin]

Fair enough .. I started doing that in reverse so maybe that wasn't a good idea. I stopped at 2009 because I was doing from 2012 backwards in preparation for my internal exam at the end of the term.

[simba]

Hmm I think last year for I only did 2006-2011 papers for further (but I had checkpoints which has some older study design questions in it too!) All of them I did in exam conditions (god knows why!)

[Damoz.G]

Fair enough .. I started doing that in reverse so maybe that wasn't a good idea. I stopped at 2009 because I was doing from 2012 backwards in preparation for my internal exam at the end of the term.

Usually its best to use the 2012 exam as your last exam before you walk into the actual exam, and do it under exam conditions. =/

How long ago did you do the 2012 and 2011 Exams?

[vashappenin]

Lol yeah I know.. my bad haha. Nah I did them like during the last week of term 3 so it wasn't that recent.. I'm sure if I do them again at the end I won't remember much at all

[abcdqdxD]

Could someone please explain what constitutes surface area?

I get a bit confused when the shape has a top removed etc, does surface area only count the 'outside' of the shape?

Another scenario was when water is filled in a cylinder with its top removed, what would constitute "internal surface area" in this case?

Thanks

[Stick]

Generally speaking, VCAA would probably be really explicit about it if it ever came up in their exams. The only instance where the inside has been included is for a pool type question where you're required to calculate the amount of tiling to tile the inside of the pool. In these questions though, you don't need to do the outside.

[tcstudent]

Hi all, This relates to matrices on 2012 exam 2 last question 3)

here is the question, the question is at the bottom of the image. its really getting annoying to realise the last question is always the hardest lmfao.

[mishamigo]

Would you just work out the workers for each job, then add them?
Ie. 70% of A stay at A. 70% of 100 is 70 people. 80% of O stay at O- 160 people, etc. then add them all up!

[Damoz.G]

Hi all, This relates to matrices on 2012 exam 2 last question 3)

here is the question, the question is at the bottom of the image. its really getting annoying to realise the last question is always the hardest lmfao.


(Image removed from quote.)

Okay:
* A - 70% stay in their job
* O - 80% stay in their job
* P - 90% stay in their job

Then you look at the Initial State, and multiply the according percentage by the number of employees in that role, and add the figures.

(70% x 100) + (80% x 200) + (90% x 50)
= 70+160+45
= 275

Therefore, 275 staff members will stay in their role.