2003 HSC questions. (1 Viewer)

[DoubleD]

ok i'm working off these answers from the resource section:
2003 HSC Exam: Complete Solutions Jeff Geha PDF (157 KB)
http://www.boredofstudies.org/courses/maths/2u/2003_Mathematics_HSC_Sol_Jeff_Geha.pdf

i've come accroiss a few errors in it..
But still, i think this is one of them, and i just need someone else who can/has allreayd done, the answers for this question.
Q5, part b.
my answers arewithout working)
i)63
ii)74
iii)3,774

Does anyone else get these? or just me?

Answers from linked resource are as follows:
i)123
ii)134
iii)10,554

-=DD32=-

 

[Jexi]

Yea I found a few errors in it. And almost freaked out because I was like 'omg you're going to fail'.

 

[DoubleD]

Yea I found a few errors in it. And almost freaked out because I was like 'omg you're going to fail'.

hehe, Took me awhile until i got someone elses opinion on the question.

Shame i didnt ge my maths teacher to write up answers for this paper(or the '04 one)

-=DD32=-

 

[Jexi]

I have the solutions to 04. If you want a particular question or whatever...yea. Though i'm lacking a scanner. Darn it.

What really knocks me is the 2003 10b. Why is it L has to be minimised? :| I jsut dont get that part.

 

[DoubleD]

havnt made it that far yet

-=DD32=-

 

[sunjet]

5. (b)

i. 63
ii. 73
iii. 3738

 

[DoubleD]

thanks sunjet,
Close enough to my answers for me.
Must've made a mistake in ii..

i've got:
10 = 63 - 1(n-1)
-53 = -1(n-1)
53 = n - 1
54 = n

Total rows = 20 + 54 = 74

-=DD32=-

 

[sunjet]

thanks sunjet,
Close enough to my answers for me.
Must've made a mistake in ii..

i've got:
10 = 63 - 1(n-1)
-53 = -1(n-1)
53 = n - 1
54 = n

Total rows = 20 + 54 = 74

-=DD32=-

63 = 20th row
so 21st row = 63 -1 = 62

So 10 = 62 -1 (n-1)
= 53 + 20 first rows
= 73

 

[DoubleD]

63 = 20th row
so 21st row = 63 -1 = 62

So 10 = 62 -1 (n-1)
= 53 + 20 first rows
= 73

Ah right, I was looking at that section thinking "..Did i include that 20th row.. or didnt i..."

-=DD32=-

 

[Jexi]

havnt made it that far yet

-=DD32=-

Are you there yet?

Sorry that questions is killing me. Is frustrated.

 

[DoubleD]

Are you there yet?

Sorry that questions is killing me. Is frustrated.

hah sorry, i kind of gave up on this paper at Q7 earlier..
i'll finish the paper off after dinnar.. and looking at 10b... i really do NOT have a clue as to waht to do

-=DD32=-

 

[Jexi]

Yea i totally gave up too. See...on the good side, they never repeat questions