VCE General & Further Maths Question Thread!

[RuiAce]

Can someone pls explain this question to me? Correct answer is B
thanks!

This looks like some kind of question I'd get in microeconomics regarding production possibility curves...

[YellowTongue]

I have a few questions regarding NEAP Exam One 2016. The question are attached below.

CORE

Question 18: The answer I got is C ($2440). I entered the following into my CAS.

N: 120
I: 5
PV: 23000
Pmt: BLANK
FV: 0
Ppy: 12
Cpy: 12

The solutions say that A is the correct response. Is this a mistake?

Question 24: The answer I got is A ($16.12). However the solutions gave B. I am not entirely certain about the correct way to work this one out, but I entered the following into my calculator.

N: 60 and then 1825
I: 5
PV: 25000
Pmt: 0
FV: BLANK
Ppy: 12 and then 365
Cpy: 12 and then 365

Have I made a mistake?

Geometry and Mensuration

Question 4: I'm not entirely certain how to go about answering/visualising this question. I got the correct answer (D), but I don't really understand the scenario where there are different longitudes and latitudes for each coordinate. How should I visualise this?

[img]https://s13.postimg.org/iy1e4m2ab/Question_18.jpg[/img]

[img]https://s13.postimg.org/tm553gc9f/Question_24.jpg[/img]

[img]https://s13.postimg.org/xfylcltlf/Question_4.jpg[/img]

[TooLazy]

I have a few questions regarding NEAP Exam One 2016. The question are attached below.

CORE

Question 18: The answer I got is C ($2440). I entered the following into my CAS.

N: 120
I: 5
PV: 23000
Pmt: BLANK
FV: 0
Ppy: 12
Cpy: 12

The solutions say that A is the correct response. Is this a mistake?

Question 24: The answer I got is A ($16.12). However the solutions gave B. I am not entirely certain about the correct way to work this one out, but I entered the following into my calculator.

N: 60 and then 1825
I: 5
PV: 25000
Pmt: 0
FV: BLANK
Ppy: 12 and then 365
Cpy: 12 and then 365

Have I made a mistake?

Geometry and Mensuration

Question 4: I'm not entirely certain how to go about answering/visualising this question. I got the correct answer (D), but I don't really understand the scenario where there are different longitudes and latitudes for each coordinate. How should I visualise this?

[img]https://s13.postimg.org/iy1e4m2ab/Question_18.jpg[/img]

[img]https://s13.postimg.org/tm553gc9f/Question_24.jpg[/img]

[img]https://s13.postimg.org/xfylcltlf/Question_4.jpg[/img]

For the core questions I had the same answer as you.
Im finding the finance stuff really annoying, especially the rounding in particular. Like when do you need to round payments and such.

[knightrider]

How would you do this question attached ?

Answer is E

[Kimahso]

How would you do this question attached ?

Answer is E

A is true because the humidity was increasing for 7 of the days out of the total 10.
C is true as the humidity was above 50% for 5.5 days out of the total 10.
D is true as in both days 2 and 3, the humidity increases by 20% (day 2 is represented by the second column, day 3 is represented by the third column)
E is not true because on day 7 it decreases by 15% and on day 9 it increases by about 15%.
I didn't even bother checking B but E is obviously not true therefore it's the answer.

[knightrider]

A is true because the humidity was increasing for 7 of the days out of the total 10.
C is true as the humidity was above 50% for 5.5 days out of the total 10.
D is true as in both days 2 and 3, the humidity increases by 20% (day 2 is represented by the second column, day 3 is represented by the third column)
E is not true because on day 7 it decreases by 15% and on day 9 it increases by about 15%.
I didn't even bother checking B but E is obviously not true therefore it's the answer.

Thanks so much Kimahso   

[TooLazy]

For everyone doing graphs and relations:

Theres a question about a chick selling coffee. Now, it asks for the break even point, which i calculated to be 71.2.
However I was just wondering since you cant sell 0.2 of a coffee, would you round the breakeven point. In the answer it says 72,
I wanted to know in which cases you have to round the break even point. And also how would you know whether to round it up or down?

[MightyBeh]

For everyone doing graphs and relations:

Theres a question about a chick selling coffee. Now, it asks for the break even point, which i calculated to be 71.2.
However I was just wondering since you cant sell 0.2 of a coffee, would you round the breakeven point. In the answer it says 72,
I wanted to know in which cases you have to round the break even point. And also how would you know whether to round it up or down?

Round up for pretty much everything. 71.2 coffees is pretty inarguably more than 71.0 coffees, but like you said you can only sell whole coffees so you need to round up. It's pretty much a context check; you should generally be able to tell how you should round by thinking about the question.

As for whether to round up or down, it depends on what's the better outcome. In this case selling more coffee is the better outcome in terms of profit so you round up. It's a bit like those normal distribution questions about running or golf or whatever, where it's better to have lower numbers. Alternatively looking at it on a graph is a pretty easy way to tell what you should do.

[TooLazy]

Round up for pretty much everything. 71.2 coffees is pretty inarguably more than 71.0 coffees, but like you said you can only sell whole coffees so you need to round up. It's pretty much a context check; you should generally be able to tell how you should round by thinking about the question.

As for whether to round up or down, it depends on what's the better outcome. In this case selling more coffee is the better outcome in terms of profit so you round up. It's a bit like those normal distribution questions about running or golf or whatever, where it's better to have lower numbers. Alternatively looking at it on a graph is a pretty easy way to tell what you should do.

Thankss

[markkovacev]

If you don't get a 50 in further you have to be pretty dense

[Andy Falkiner]

If you don't get a 50 in further you have to be pretty dense

I got 45 last year and nearly killed myself

[MattJackman]

So True andy i was really upset with my score too 

[brenden]

I got 45 last year and nearly killed myself

If you don't get a 50 in further you have to be pretty dense

So True andy i was really upset with my score too 

Given that two of you registered like an hour ago and the three of you have been making stupid posts on this thread and in this thread, I can only assume you thought it'd be a hilarious time to troll ATAR Notes etc etc. Fair enough, each to their own, right? But I'll tell you one time: stop being stupid or I'll just call your school and ask them to tell you the same.

Cheers boys. Study hard!

[Escobar]

does anyone know how to do this?
http://i.imgur.com/ADjS053.jpg

[Maths Forever]

does anyone know how to do this?
http://i.imgur.com/ADjS053.jpg

I would say the answer is D: 11 206.

The question asks for the predicted minimum number of penguins over the quarters 16, 17, 18, 19 and 20 (since this is the next 5 quarters).

We first must work out the deseasonalised figures for these quarters using the trend line.

Quarter 16: [4.5 + 0.73 (16)] x 1000 = 16 180
Quarter 17: [4.5 + 0.73 (17)] x 1000 = 16 910
Quarter 18: [4.5 + 0.73 (18)] x 1000 = 17 640
Quarter 19: [4.5 + 0.73 (19)] x 1000 = 18 370
Quarter 20: [4.5 + 0.73 (19)] x 1000 = 19 100

Now, using the formula, Actual Figure = Deseasonalised Figure x Seasonal Index, we can compute the actual predicted values for these quarters.

Quarter 16: 16 180 x 1.30 = 21 034
Quarter 17: 16 910 x 1.20 = 20 292
Quarter 18: 17 640 x 0.89 = 15 699.6
Quarter 19: 18 370 x 0.61 = 11 205.7
Quarter 20: 19 100 x 1.30 = 24 830

We recognise that quarter 19 has the minimum predicted value, and if we round up we find that the predicted value is 11 206. Hence, the answer is D!