CSSA advanced mathematics- dude wtf?! (2 Viewers)

[_deloso]

How did you guys go? that was harder than past papers!!! hopefully I get 80%+ but seriously, I was aiming for 95+. that test was difficult!!!

 

[imZerroo]

the absolute value q. find a and b
that was a wtf moment !

 

[anne1010]

the absolute value q. find a and b
that was a wtf moment !

LOLLLLL i spent about 20 mins on that and still didnt get it.

found it to be an ok exam though.

 

[Ivy Mike]

Wasn't that bad. I was a little caught off guard by question 6 or 7, I don't quite remember. The question asked us to find the volume of water flowing through the pipe in 10 minutes. If anyone feels like posting their results it would be appreciated.

 

[imZerroo]

LOLLLLL i spent about 20 mins on that and still didnt get it.

found it to be an ok exam though.

ye it was ok.. but what did you put though?
i put when a=6, b=12, when b=6, a=12
hope i get 1 mark atleast

 

[imZerroo]

Wasn't that bad. I was a little caught off guard by question 6 or 7, I don't quite remember. The question asked us to find the volume of water flowing through the pipe in 10 minutes. If anyone feels like posting their results it would be appreciated.

1m^3= 1000L
made a stupid mistake in the chem test regarding this, not in this one
i think i got 26.3 kL though, anyone else got that?

 

[TorMental]

It was absolute value so | x-a | < or equal to b
The rule is that -b < |x-a| < b
so if b = 3 and a = 9
its -3 < x-9 < 3 -- (now plus 9)
6 <(or equal) x <(or equal) 12 (from the line given u can see that)

Now iono if thats right... but q10 of the paper i didn't even bother with probability. x_x

 

[Ivy Mike]

1m^3= 1000L
made a stupid mistake in the chem test regarding this, not in this one
i think i got 26.3 kL though, anyone else got that?

I got 31.4kL or something around that.

ye it was ok.. but what did you put though?
i put when a=6, b=12, when b=6, a=12
hope i get 1 mark atleast

|x - a| < b

-b < x - a < b

-b + a < x < b + a

-b + a = 6

b + a = 12

Substitute & solve. The > & < are supposed to be greater/less than or equal to.

 

[anne1010]

ye it was ok.. but what did you put though?
i put when a=6, b=12, when b=6, a=12
hope i get 1 mark atleast

does anyone know how to do that question? i was trying to solve it simultaneously but then id just end up with 6=12
lol failed that shit, just loads of different working, so maybe somewhere theres a mark

 

[Drongoski]

the absolute value q. find a and b
that was a wtf moment !

Post the question.

 

[_deloso]

1m^3= 1000L
made a stupid mistake in the chem test regarding this, not in this one
i think i got 26.3 kL though, anyone else got that?

the answer I got was 26.3 L then changed it to kL so .0263 kL but I guess that's wrong then cos m^3 = 1000L

 

[MrBrightside]

1m^3= 1000L
made a stupid mistake in the chem test regarding this, not in this one
i think i got 26.3 kL though, anyone else got that?

omg F*(%&$, I divided 26.3 by 1000. >< not a good day.

 

[imZerroo]

|x - a| < b

-b < x - a < b

-b + a < x < b + a

-b + a = 6

b + a = 12

Substitute & solve. The > & < are supposed to be greater/less than or equal to.

wtf ! actually, i cbf doing it. nvm. but thats 2 marks gooooneee.

 

[MrBrightside]

omg F*(%&$, I divided 26.3 by 1000. >< not a good day.

did anyone get a corrected qs for this question? Apparently the original was worded wrongly.

 

[imZerroo]

the answer I got was 26.3 L then changed it to kL so .0263 kL but I guess that's wrong then cos m^3 = 1000L

i said 1m^3= 1L for the chem trial.
for the CO q. i ended up wtih 350 000 ppm. didn't realise until i got home that its completely stupid.

 

[anne1010]

I got 31.4kL or something around that.



|x - a| < b

-b < x - a < b

-b + a < x < b + a

-b + a = 6

b + a = 12

Substitute & solve. The > & < are supposed to be greater/less than or equal to.

grrr that came to mind when i was driving home.

 

[josh_blick]

yeah our paper had a little bit stuck over that one, I got 8 point something ML for the amount of water flowing every 10 min question and I checked it many many times :S

 

[imZerroo]

who got 11 u^2 for that area under the graph q.?
i think i did too much work for a 3 marker. so probs wrong.

 

[josh_blick]

must say I loved the wollamba dam question

 

[_deloso]

who got 11 u^2 for that area under the graph q.?
i think i did too much work for a 3 marker. so probs wrong.

I think I got 9