Worked Solutions (1 Viewer)

[skyrockets1530]

for Q7 a)i) isnt the answer ($2500 x 13) + 50000 = $82500
and ii) 50000(1.04)^13 = $83253.65

are these rite??

snickerdoodle already pointed out part i

for part ii, thats what i ended up getting, but i think its to the 12 as when u write it out you get 50000(1.04^n-1) as there is not pay increase on the first year.

 

[snickerdoodle]

for part ii, thats what i ended up getting, but i think its to the 12 as when u write it out you get 50000(1.04^n-1) as there is not pay increase on the first year.

That makes sense. Damn, another mark down the drain!

 

[DigitalFortress]

the probabilty question is wrong the one where it goes what is the chance that each colour has a winning ticket cos you have to take in different arangements there are 6 of em

rgb rbg
brg bgr
gbr grb

is about 95/96 what you need for a band 6 me hopes

WOOOO I GOT THIS ONE RIGHT!!!!!

 

[bentrengrove]

ARGH I put in the 13th year as well! Must of had a mental blank should have added it to 2005!

 

[LostAuzzie]

the probabilty question is wrong the one where it goes what is the chance that each colour has a winning ticket cos you have to take in different arangements there are 6 of em

What answer did you get because if you multiply that answer by 6 you get 60000/44551 = 135% or maybe i'm just misinterpreting what you are saying

 

[phil2005]

The probability question in that answer set IS correct.

You're right in saying that you have to multiply by six, but that answer already has taken that into account

Here:
P(One of each) = (100/300) x (100/299) x (100/298) x 6 = 0.224461....
)
Which is the same as the decimal approximation in that worked solutions. (As 10000/44551 = 0.224461...

 

[Trippendicular]

According to those answers posted before I've only lost about 4 marks from what I can remember, depending on how many I lose for some questions like the volume integration question where I did it right then convinced myself that 24 Pi couldn't be the answer so I changed it at the last minute.

 

[MCOLT]

my mistake then but i remember multiplying a big fraction by 6 and the decimal was 0.22 si in that case the answer was right, was anyone else a bit worried when big numbers started coming out of their calculators usually probability for q5 is like 4/7 or 2/3 simple numbers i though that question was more q7 or q8

 

[jul1e]

julz

apparently there were 51% of you who sat the maths exam who did 3 unit and my teacher said us 2 unit kids dont stand a chance of getin a band 6. To any 3 unit students out there... did u find the exam hard? and if any1 can post up solutions 2 question 6 ... apparently d hsc markers were reely disappointed in it