General Questions from 2002 Paper.... (1 Viewer)

[lowey123]

Hi all,

Just a few questions from 2002 paper that I need to be helped with.. thank heaps..Also do they ever use the same type of questions two years in a row?

2002 HSC Paper is at:

http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2002exams/pdf_doc/mathemat_gen_02.pdf

Thanks..

Questions 23b (i) and (ii)
I think I know how to do (i) $5000 x 1.03 x 5 but not sure about ii

Question 25 (iii)
Not sure also about this... I thought maybe 1/10.. But i dont think so...

Quesion 25 tho whole a)

Also is

bi: 13 hours 20min
bii: 8.40am Saturday Morning
ci: 1.05x10 *17 ( to the power of 17..dont know the symobl 4 it)
cii: WOULD NOT HAVE A CLUE
ciii: Is it 5.02 *2(squared)

Question 26

bii: Standard deviation
cii and iii

And how the HELL fo you do Question 28...

Thanks Guys!! Thanks heaps!! If you dont know all, just please help with the ones you do know.

Thanks!!

 

[adamj]

Just looking over 23(c), I don't know why they include that, Hire Purchase Agreements are against the law under the Credit Act.

 

[honky tonk]

Question 23
(b) (i) You need to do compound interest:

  A = 50,000(1+0.031) to the power of 5

(b) (ii) You need to convert the percentage and rate to months:

  A = 50,000(1+0.0025) to the power of 60

I'm not sure which question you are referring to for "25 (iii)"

Question 25
(b) (i) 13 hours 20 minutes

(b) (ii) 8:20 a.m. Saturday

(c) (i) 3.4 x 10 to the power of 16

(c) (ii) Difficult to write, but... √(A/π ) + r

(c) (iii) 1.65 mm (to 2 decimal places.)

Question 26
(b) (ii) 1.66 (to 2 decimal places.)

(c) (ii) Using the points (40, 30) and (80, 50) on the line, subtract 50 and 30 for the top line, and subtract 80 and 40 for the bottom line, giving 20/40 or 1/2.

(c) (iii) y = mx + b
Therefore, G = 1/2A + 10

Question 28
(a) (i)A = width of gutter x height of gutter

Now width = 28 - 2x and height = x

Therefore, A = (28 - 2x) x x
which = 28x - 2x.

 

[lowey123]

Can you please explain how you did these?

(c) (i) 3.4 x 10 to the power of 16

(c) (ii) Difficult to write, but... (A/ ) + r

(c) (iii) 1.65 mm (to 2 decimal places.)

 

[swordfish]

i dont get the question about similar figures. Apparently the enlargement factor is 2, but i dont see how they get that.

 

[connie]

no the enlargement factor is 4? Q25 (a) (i) (2)?

because 50/20 : 200/80 making it 4? whoever said it was 2 is definately wrong