2005 HSC Answers (1 Viewer)

[Casmira]

hey what r the answers for

Question 25bi when u had to use pythagoras to show that ABC is a right angled triangle.

Question 27ci when u had to explain y the angle was 110


Also with question 25ai is entertainmant $624 or $576.

- all you had to do was square sides then square root answer should match the hypotenuse

- you explain how the revolution is 360 degree's, and since the triangle is 250? (i don remember how many degrees in it was) then to find out its angle you do 360 minus it

- entertainment was $576

 

[7th Sign]

I know for a fact that 27 d) i) soooooo many people at my school olot 2marks here....
not many people did sample standered deviation...

 

[Sar_28]

ga! i just found out that i screwed up question 23.c (i)(ii) and (iii). i got it all right except for the fact that i misread it and thought that Moheb had 6 blue ties!, therefore all my answers will be wrong. gagaga! dammit, 5 marks down, geezzzz im stupid.

 

[neax]

accoding to this im looking at a 97 RAW, I'd still like to know if someone brought out ther question book, though .. so i can check for sure.

 

[Danni07]

shit I didnt times 0.80 or 0.67 by 48, i'll probably only get 1 mark for it then

I think we've established that you didn't need to times them by anything, and I'm not sure where you got 48 from...?

 

[OutOfOrder]

Hmmm, so for the financial expectation question i wasn't sure, so i wrote:
The financial expectation is 80c, thus if 60 games were played she would win $48


is this wrong or what?

 

[7th Sign]

I cant even remember my answers how do u people knoe every answer word for word what u got lol...

 

[Proxy]

I brought out the question booklet, I can have it scanned and sent to emails I think. Give me a while and I'll have it done (proxybluesterATgmailDOTcom, let me know, don't spam the msg boards, also, if people can tell me how to make it a .pdf (on mac) I can make it a .pdf (It'll have a few markings in it though, sorry)

One thing though. Question 8. I got B) Because (calculator) Shift Tan 11°26' = 85.00...

But 97% RAW, I'm not complaining, just be nice if it went to 98%

 

[billsta05]

accoding to this im looking at a 97 RAW, I'd still like to know if someone brought out ther question book, though .. so i can check for sure.

I brought the question book out. Its in my room... What question are you after?


Q25 (c)

Robyn plays a game in which she randomly chooses one of these five cards. She plays the game 60 times, replacing the card after each game.

Win $4
Win $4
Win $4
Win Nothing $0
Lose $8

(i) How many times would she expect to win $4?
(ii) What is the financial expectation of the game?

 

[jackcass2]

23 b ii

for question 23 b ii you have 9% or something?

i had it as

18.47... (the three holes)
over
1512 (original brick)

x 100

= 1.22%

am i incorrect? if so how did u get ur answer?

if i am right i got 97 raw mark. got that butterfly question and cumulative frequency wrong graph wrong. and financial expection question iii wrong.

 

[Rnb Producer]

r u guys nerd ullehs?


weres the chick bro the chickzz.........

hot chix add my msn...... i not smart like dese guys cummonnnn.... i got 7% in maths trial

add me aiight ladies peace habibi'z

 

[Proxy]

Billsta05 - If you look at the beginning of the topic, all the answers are there, pretty much.

From Memory (i) Was 60 and (ii) .80c

jackcass2 - Yeah, from memory I got 9.8% which seems to be right.

To work it out, you had to minus the three cylinders from the brick. Without using a calculator, it seems you've used just minused 3 circles. You needed to times the area of the circles by 8 (The height of the cylinders/Length of the brick). Does that make sense?

 

[jackcass2]

oh shit... yeah i only did it as 3 cirlces not cylinders!! there goes 3 marks from question ii and iii. i should get at least 1 mark outa the 4. thanks for that proxy.

my mark drops down to 94 (probs less with more stupid mistakes).

 

[Proxy]

Hm.. I have the paper scanned (not terrific quality, but u can see the questions well). the best I can do atm is have them as a .zip, and send them to emails or over msn. If anyone could put it up on a webspace, that would be awesome. The file is 4.2MB and I'm using a 56k modem, so a webspace would be fantastic. MSN is the same as the email above.

 

[jackcass2]

i got webspace if u want. email to jackcass@jackcass.com

the web address will be : removed

ill convert to pdf for you.

edit: already a scan of the exam so no point

 

[rego2]

with question 28) B.II
i got 90 as an estimate but PC got 88
would my answer be wrong? cuz its just an estimate right? deres not approx answer?

and dumbest mistake i did was on question 27) B
i convert it to Km 43 x 60 x 1.852 and i didnt write the working out... u guys think they would at least give me 1 mark? lol

 

[Proxy]

Jackcas2 - Hey! Thanks It'll come to you soon (56k modem sending email.. watch it go *rolls eyes*

rego2- Yeah, that should be fine. I wrote 90 and I'm pretty confident with it, because it asks for an estimate from the graph, which looks about 90 (half way between 80 and 100)

 

[Proxy]

http://rapidshare.de/files/6690725/03.zip.html

There's already a scanned version ^^. Saves me n Jackcass doing any work

 

[MadWombo]

question 23 a) ii) Whit is the probability that first prize is NOT won by Khalid or Herman?

Ur answer is 69/100 which is just the Herman and Khalids added together.
I did the probability of Khalid not winning times by the probability of Herman not winning an my answer turned out to be 703/1000.

Can this be correct?? did anyone else get this answer??

 

[rego2]

khalid and herman add up = 31/100 to win
so 31-100 = 69/100 not going to win