Suggested Answers to the HSC 2016 General Maths Exam (+ Exam Discussion!)

[aimbotted]

Aha no you don't seem ungrateful at all! There were always going to be mistakes; I was relying on students like you to pick them up. Seriously, thanks for your contribution, and feel free to drop in any more!

anyways for question 29 b ii

wouldnt the percentage be 10% increase?

[green-jake]

Would Q25 of the MC not be D??

[stephanieazzopardi]

For 15, do you read the question as being charge 54 cents for ANY PART of the 30 seconds? I read it to mean you pay the 'part' of the 30 seconds that you talk; ie. half of the 54 cents for 15 seconds. I could be wrong in that reading?

For 19, in my stats course, you take the medium value not including the first and medium terms for each quartile. Is it not the same in General Maths?

21 could absolutely be different, I tried looking up how those sorts of tables work but I've never done anything like it. Could you post up your working/solutions for the questions you disagree with?

For 15: I think the answer is D.. You get charged every 30 seconds so if you're 15 seconds into your 30 seconds they'll just charge you the full 54c. I think anyway

[aimbotted]

Would Q25 of the MC not be D??

i put that aswell o.o

[jakesilove]

anyways for question 29 b ii

wouldnt the percentage be 10% increase?

You're definitely right: I did the right working out, but put down the wrong answer!

[Shaye1998]

In question 22 of the multiple choice, each line in the box and whisker plots represents 1/4 of the data. So that means you find 1/4 of 112 = which is 28. In geography we can see that 1/2 of the class got above 30 (1/4+1/4) and seeing as they say there is the same amount that got above 30 it must mean that answer is (C) 56 ( 2 * 28 = 56) hope you get it you might be able to word it better.

[aimbotted]

also for the time one

we're going from melbourne which is further east than dubai

so wouldnt we essentially be going back in time by 21 hours? making it 2:30am friday

im not 100% on this one

[jakesilove]

Would Q25 of the MC not be D??

It definitely should be! I wrote D when I mocked up the answer... don't know what happened there. Maybe a copy/paste error

[Bzenere]

Wouldn't 28. e) (ii) be 193cm, there's only 6 gaps, not 8.

[Hayden776]

Please review Q25 again.
It is stated that  angle BCA is abtuse which is greater then 90.
Therefore angle ABC can be a max of 65.
Therefore angle OBC must me atleast 115.

Also 28eii,
I believe you have miss calculated it. The answer I got is 193cm^3. 
You made each corner 4.05cm^3 and there is 24 corners then times 2 for the layers =193.2cm^3

[aimbotted]

Wouldn't 28. e) (ii) be 193cm, there's only 6 gaps, not 8.

i rounded it off to 194 fuckckckckckckckckckckc noooooooo

[jakesilove]

Wouldn't 28. e) (ii) be 193cm, there's only 6 gaps, not 8.

For sure, 6 gaps not 8! I'll change that now

[studybuddy7777]

OH MY WOWS. That exam.
Overall I think I did okay, but the damn cake question!! Could not workthat out for the life of me!! And the 5 marker about the playground! Wow!

Then you go to questions - 2 coins a flipped whats the chance that one is heads one is tails and I am just like **facepalm** this could be done by a primary kid.

A very inconsistent exam, in my opinion.

[jakesilove]

Please review Q25 again.
It is stated that  angle BCA is abtuse which is greater then 90.
Therefore angle ABC can be a max of 65.
Therefore angle OBC must me atleast 115.

Also 28eii,
I believe you have miss calculated it. The answer I got is 193cm^3. 
You made each corner 4.05cm^3 and there is 24 corners then times 2 for the layers =193.2cm^3

Hey Hayden! Thanks for the post, and welcome to the forums; I think we've already fixed both of these issues, but let me know if we haven't! I smashed out the answers so quickly that issues were always going to arise, congratulations on spotting them! Also, I have to say, the method you used to answer that angle question is really, really nice,

[aimbotted]

question 27 interquartile

i got 36 because

q3 = 172 and q1 = 136