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#### Mystery

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« on: November 12, 2007, 02:07:41 pm »
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Multiple Choice:

1.A
2.D
3.D
4.C
5.D
6.D
7.A
8.D
9.E

10.E
11.E
12.C
13.C
14.C
15.B
16.E
17.B
18.D

19.A
20.D
21.D
22.C

1.a) 1000/(pi x r^2)
1.b) (2000/r) + (2 x pi x r^2)
1.c) r = cube root(500/pi)
1.d) 553.58cm^2

2.a) m=0 (wtf vcaa?? how do you do this crap!!)
2.d) after 9.20am (not inclusive)
2.e) 2.44 hours
2.f)i) p = 10, q = 3/2
2.f)ii) 40.625min
2.g) 430 minutes to spare! (lol what was I doing...)

4.d) 6.00 units^2

5.b) 7/8
5.c) 1/7
5.d) 0.9709

*WARNING* 100% BIAS ANSWERS, DO NOT TAKE THESE AS SERIOUS, THEY ARE MY ANSWERS and MY ANSWERS ONLY. (I am not an Ahmad, all I require is 25 in methods)

*NO MORE EXAMS!!! WOOT!!! I OWN VCE =D*
I believe life is constantly testing us for our level of commitment and life's greatest rewards are reserved for those who show a never-ending commitment to act until they achieve. This level of resolve can move mountains, but it must be constant and consistent. As simplistic as this may sound, this is still the common denominator that separates those who live their dreams to those who live in regret.

#### hifer

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« Reply #1 on: November 12, 2007, 02:35:16 pm »
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i think i got A for MC 3, E for Q22

For short ans:
1c) u can simplify cube rt(500) to 5 cube rt(4)
2a) m = 8000
2e) i got an exact ans of 2hr 40min
2g) i think 3s sth?

rest of short ans should be pretty much the same..

#### hifer

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« Reply #2 on: November 12, 2007, 02:36:40 pm »
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omg.. u have no more exams? i'm soooo jealous 3 to go.. >< all diff subjs -.-"

#### keik674

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« Reply #3 on: November 12, 2007, 02:39:03 pm »
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For MC i got
A
D
A
C
D
A
A
B
E

E
E
C
D
A
B
E
C
D

A
A
A
E

#### Odette

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« Reply #4 on: November 12, 2007, 02:39:40 pm »
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You are sooooooooooooooooo lucky!! i have 2 exams left sigh

#### melanie.dee

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« Reply #5 on: November 12, 2007, 02:44:47 pm »
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omg fuck i just realised i made the stupidest mistake EVER

for the amount of time its undr 1250.. my x values were like 28/3 and 32/3 or something like that.. anyway i counted that gap as 4 hours. instead of 4/3 hours! which x2 would have been 2.666 which is 2hr 40 mins which is right but instead i put 8 hours cos i copeltely was NOT thinking. FUCK FUCK i hate stupid mistakes

#### asa.hoshi

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« Reply #6 on: November 12, 2007, 02:46:45 pm »
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cubic equation
y=-2x^3-6x^2+2x+6
I KNOW WHAT YOU DID LAST SUMMER!!

#### melanie.dee

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« Reply #7 on: November 12, 2007, 02:48:40 pm »
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ps. um wait, what was the difference between the cas and normal exams? cos all these questions you speak of seem to be ones i did in the cas exam? so confused

#### ltee

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« Reply #8 on: November 12, 2007, 02:54:24 pm »
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i got 1.337*2 for total hours .. so it about about 2.67 hours overall .. so i think i got that right ... please let it be haha - i think i did write 2 hours 40.2 minutes ..is that okay for an answer?

btw, hifer- with your 3 seconds. did you get it because of the 1.337 hour interval, before the concentration hit deadly again? cos i got like 2 . something seconds, but im not for sure what i got numerically
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#### Matt89

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« Reply #9 on: November 12, 2007, 02:56:41 pm »
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Quote from: "keik674"
For MC i got
A
D
A
C
D
A
A
B
E

E
E
C
D
A
B
E
C
D

A
A
A
E

I got exactly that

Quote from: "asa.hoshi"
cubic equation
y=-2x^3-6x^2+2x+6

Did we have to expand it? I left it factorised

#### asa.hoshi

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« Reply #10 on: November 12, 2007, 02:59:29 pm »
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i used my calc to solve it.

hrm. its 160min isn't?
I KNOW WHAT YOU DID LAST SUMMER!!

#### ltee

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« Reply #11 on: November 12, 2007, 03:02:00 pm »
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^ 160 minutes is 2 hours and 40 minutes ...

160 divide by 60 is 2.67 .. .67*60 is 40 minutes.

so yes, we are correct
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#### hifer

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« Reply #12 on: November 12, 2007, 03:03:40 pm »
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Quote from: "ltee"
i got 1.337*2 for total hours .. so it about about 2.67 hours overall .. so i think i got that right ... please let it be haha - i think i did write 2 hours 40.2 minutes ..is that okay for an answer?

btw, hifer- with your 3 seconds. did you get it because of the 1.337 hour interval, before the concentration hit deadly again? cos i got like 2 . something seconds, but im not for sure what i got numerically

ya.. i couldn't really rmb it was 2 or 3 sec i guess

#### asa.hoshi

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« Reply #13 on: November 12, 2007, 03:05:06 pm »
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Quote from: "ltee"
^ 160 minutes is 2 hours and 40 minutes ...

160 divide by 60 is 2.67 .. .67*60 is 40 minutes.

so yes, we are correct
but i think for some reason i wrote 180 minutes. :S oh well. there goes 1 mark. lost about 2000000000000 marks. LOL altogether...
I KNOW WHAT YOU DID LAST SUMMER!!

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