exam 2 thoughts + answers, applying sticky

[hifer]

Can someone help me out with matrices last question, I mucked it up... hopefully someone will have it still in their calculators(the values) and can help explain it...

Also, for GRAPHS & RELATIONS, Question 2.d) Are you 100% sure its $7.92?, I got $10.64

Hey do u rmb what u got for the last Qs? I still have the matrices in my calc but somehow i can't get the answer i got before lol.. and I got the same answer as Joe for 2d

I got something different, like 92 eggs.... but I'm assuming its wrong because people were telling me somethin like 1xx

damn that graphs and relations, what was it asking again question 2.d) they gave you average speed of 80km/h and you had to sub it into the equation and you would get the amount of gas, from which you times that amount of gas by 80 cents?

Yup, when u sub 80 into the Eqn, i think u get 9.9L/100km and 9.9 * 0.8 = 7.92

Do u know what the other people were saying for the last qs? I got 118 and Joe got 130..

[dxb]

I thought it was relatively easy, only long. Had about 1 min at the end to finish off a geo answer.

Did much better i thought than in the multi choice

Deff got sum things wrong, but other than that yeh pretty happy.

[Mystery]

also for the geometry, last question: i got (1/4)^3 =  1/64

which one is correct o_O

and how did you get 37/64....

[Odette]

Yeah i think the exam was pretty straight forward, i liked it
I didn't write my answers though lol ... so i cant share

[*insert witty name here*]

anyone got the answers to sequences and series..thing is, i do but they're written all over the place =p

[*insert witty name here*]

also for the geometry, last question: i got (1/4)^3 =  1/64

which one is correct o_O

and how did you get 37/64....

the answer is actually 37/64 because

from the previous question:
ratio of length between the two pyramids= 3:4
ratio of volume between the two pyramids= (3)^3 : (4)^3
= 27: 64

therefore, the ratio of the volume of the remaining block to the volume of the pyramid is (64-27) / 64 = 37/64

[AhaShake]

hifer i got 130 for that last matrices question...

[maxleng]

joechan: i hope you wrote your formula with the words instead of y and x? im sure u did tho

i only rushed and wrote a few answers down,

i got 27/64 for the volume ratio part i) and i thought part ii) was asking specifically for the actual volume  :?:  so i got 4144m^3

my random collection of numbers/answers for networks:

22
43
6
G
GABCDEFG
19weeks
AEG
5weeks
15weeks
$25000

edit: joechan i think your residual value is wrong? i got -.22 (13.55-13.77 = -.22)

[hifer]

hifer i got 130 for that last matrices question...

ARgg.. might have lost that mark then.. was it out of 2 or 1?

[Defiler]

Matrices last answer was indeed 130.

[Mystery]

hifer i got 130 for that last matrices question...

ARgg.. might have lost that mark then.. was it out of 2 or 1?

surprisingly only 1

[AhaShake]

just the one mate

the matrices was a bit trickier than i thought it would be.

[dashkenny]

holy shittt, i got the same as everyone cept for the last question of business maths.

i got 12% T_T

thought something was fishy but, coz it said to one decimal and mine was 12 exact.

anyone else get 12 :|

[maxleng]

nah it was 16.7, i checked it twice, once with calc program and once with hand

[Odette]

nah it was 16.7, i checked it twice, once with calc program and once with hand

Yay i got that too!!