Answers to General Maths Exam (3 Viewers)

[Flinch]

(iv) Those 75-79 would have been born during the Great Depression in the early 1930s.

wtf is this maths?? are they allwed to ask this lol. i said something about baby booming lol

Isnt it jst cause 80+ has more ages in it?

 

[8th1da]

ohk fair enough. my apologies

 

[Roga]

would 27 a) iii) be 12am wednesday?

got 9 hours for plane and 5 hours for time difference : 75x4=300 =5 hours?

for 27 a)
ii) 9 hours
iii) Wednesday 12PM

Is this right?

 

[Q2C-ME]

i got disagree with you in regards to MC Q 2...cuz if you think about it a box by defintion has a bottom

ummm...17 i think its B...dunno why but made sense...proballi wrong on it

and for Q25 b) the tree diagram...im quite sure that the denominator doesnt change because they said ( two at a time)...if u kinda get what i mean...if you take two out the probaibility for getting it is still the same, but if you take 1 out...then the possibilitys decrese cause your missing one. hence a lower prob...but yer could b wrong

 

[Flinch]

I don't think (ii) is asking for the amount of alcohol per minute, but just the amount of "drink" per minute.

Rate = 375 mL/1.6 drinks
= 234.375 mL/1 drink
= 234.375 mL/1 hour (1 drink per hour)
= 3.90625 mL/min

I thought it would be alco per min.

They dont state it clearly in the question, so im sure they would accept both, i mean, showing you can work out either shows you could do the other one.

 

[Q2C-ME]

I don't think (ii) is asking for the amount of alcohol per minute, but just the amount of "drink" per minute.

Rate = 375 mL/1.6 drinks
= 234.375 mL/1 drink
= 234.375 mL/1 hour (1 drink per hour)
= 3.90625 mL/min

for that one i got 0.2 ml/min....im thinking im wrong cause every1 else is not getting my answers ...grrr!...i think its 0.2 because they have given you 1.6 standard drinks...and the MAXIMUM is one standard drink so hence you have to convert

 

[grkforlyf]

Q2C-ME vbmenu_register("postmenu_3840085", true); thats what i got but i wasn't really sure of it

 

[lollipopxo]

for that one i got 0.2 ml/min....im thinking im wrong cause every1 else is not getting my answers ...grrr!...i think its 0.2 because they have given you 1.6 standard drinks...and the MAXIMUM is one standard drink so hence you have to convert

your right i got the too, the equstion said a male should drink 1 standard drink 9this is a reference to alcohol) per hour. So by that logic you calculate how many ml of alcohol per minute. so yes 0.2:1

 

[Kiim2507]

Can someone explain the 1/15 for 24 b) (iv)

I got 1/20

432
431
321



Also how do you do 24 c)

And I also got 0.2mL/min
Hopefully they'll accept both because the question didn't really specify

 

[zouba]

Kk I Fink I Just Failed Mathhhhhsss ...grrrrrrrrrrrrrr I Though I Wld Of At Least Gopt A 90 Man Dat Was Soo Harddddddd..hate U Bos ...you Cann Go Frkn Dieeeeeee

 

[Q2C-ME]

i feel as though they will only accept 0.2...because although they hav note made it explict they will use the subtle english excuse lyk always...."one standard drink"...and i reckon this can be further suppourted because if you think about it...this is kind of a ratio question..

1.6:20ish mLs

1=?

and then convert

 

[savio23q]

PC, are you sure that question Q27 (a)(ii) is 5 hours? It asked how long the flight took, not the time difference. 5 hours is the time difference between Kenya and Borneo. I got 9 hours because s=d/t - therefore I used my previous answer. 8377/913 = 9 hours.

And for the next one, I went forward 5 hours from the Kenyan time - 10pm Tuesday - 5 hours forward = 3am Wednesday. So 3am Wednesday PLUS the 9 hours flying time gave me 12pm Wednesday (the arriving time of the plane in Borneo).

EDIT: Someone already beat me to it LOL. I take it back

 

[Q2C-ME]

Kk I Fink I Just Failed Mathhhhhsss ...grrrrrrrrrrrrrr I Though I Wld Of At Least Gopt A 90 Man Dat Was Soo Harddddddd..hate U Bos ...you Cann Go Frkn Dieeeeeee

honestly dont get so down....if its a hard test lyk i think...u never kno how marks get "alligned"....that 90 is not impossible

 

[Q2C-ME]

PC, are you sure that question Q27 (a)(ii) is 5 hours? It asked how long the flight took, not the time difference. 5 hours is the time difference between Kenya and Borneo. I got 9 hours because s=d/t - therefore I used my previous answer. 8377/913 = 9 hours.

And for the next one, I went back 5 forward hours from the Kenyan time - 10pm Tuesday - 5 hours forward = 3am Wednesday. So 3am Wednesday PLUS the 9 hours flying time gave me 12pm Wednesday (the arriving time of the plane in Borneo).

correct

 

[Q2C-ME]

lol ive posted so much...but id jus like to say one thing.

i think everybody or from what ive heard everyone thinks Q28 the last bit and Q27B) the loan bit is the hardest, and that is about 10makrs althought you will atleast get a bare minimum of 5 with okay working out.

but i think their neglecting the small little nitty grittys lyk the kenya flight question and the alchol one and even multiple choice box one...which kinda adds up to be a bit more...lol

 

[lil-monkey]

can some post the actual questions as well as answers =].
i was so glad it was over i forgot to take the booklet with me.

 

[Terlob]

Can someone explain the 1/15 for 24 b) (iv)

I got 1/20

432
431
321



Also how do you do 24 c)

And I also got 0.2mL/min
Hopefully they'll accept both because the question didn't really specify

I got 1/20 and 0.2mL/min too

 

[Bilama]

Hi guys. I've really ripped through the paper so there might be a few errors. Let me know. I'll try and put my worked solutions up tonight or tomorrow.

Anyway ... it's all over now. Forget about it move on to your next exam!

-----
2008 GENERAL MATHS HSC EXAM

SECTION I
1. A
2. C
3. A
4. D
5. B
6. B
7. D
8. C
9. A
10. D
11. B
12. A
13. C
14. B
15. B
16. D
17. A
18. A
19. B
20. D
21. B
22. C

SECTION II
QUESTION 23
(a) (i) Feb, Mar, Nov or Dec
(ii) Nov
(b) 0.4%
(c) (i) 20.625 mL
(ii) 3.9 mL/min
(d) x = 5
(e) 175 people
(f) 76%

QUESTION 24
(a) (i) $24445.20
(ii) Method 2
(b) (i) 60
(ii) 3/5
(iii) 24
(iv) 1/15
(c) $335 138.91

QUESTION 25
(a) (i) a = 6
(ii) 8 years
(b) (i) Probabilities on 2nd stage: 11/29, 18/28, 12/29, 17/29
(ii) 73/145
(c) (i) 41.04 cm x 21 cm x 15 cm
(ii) 506 cubic centimetres

QUESTION 26
(a) (i) 68
(ii) 6/25
(iii) Movie will not be a success as only 58% of critics liked the movie.
(b) (i) 7/400
(ii) Negatively skewed, clustered around ages 61-75
(c) Lose $22.50
(d) (i) 600 000
(ii) 35-39
(iii) 1 450 000
(iv) My first answer was: Those 75-79 would have been born during the Great Depression in the early 1930s.
A better answer is 80+ can include ages from 80 to 100 or more, so there will be more people in that range.

QUESTION 27
(a) (i) 8377 km (or 8334 km)
(ii) 9 hours
(iii) 12 pm Wednesday
(b) (ii) $78431.20
(iii) She will take 252 months, or 21 years, so will not be able to pay loan off in 20 years.
(c) $2800

QUESTION 28
(a) (i) 1
(ii) (1) 155 cm (2) 84%
(iii) 163 cm
(iv) 55.8 kg
(v) (1) Height increases by 6 cm per year (2) Around age 12, girls start "growth spurt".
(b) (i) A = h/3[8a + 2b] = 2h/3[4a + b]
(ii) Decreases by 8 m

i got exaclty the same MC answers
lets hope theyre correct

 

[avibauer]

but didnt it say ignore time zones?

 

[nikki5790]

ahhh! *facepalm* x 100.
ehhhh i somehow didn't even realise till i looked on here... that i forgot to add the flight time to the 5 hours :| before moving onto the next Q.
i am feeling... incredibley.. smart right now :|

*applies for job at council, as one of those people who holds up stop signs*