# Carrotsticks' MX2 HSC 2013 Solutions (1 Viewer)

#### RealiseNothing

##### what is that?It is Cowpea
With that 10 marker and the induction and circle geo, I would say 100 would be super hard to get.
The circle geo and induction were pretty easy compared to the rest of the paper in my opinion. The induction took 3 lines.

#### RealiseNothing

##### what is that?It is Cowpea
Yeah its sqrt(189/20).
really? I got the same answer doing it a different way...

#### kewon

##### Member
yeah obviously hard to get but i think would be very achievable for the top 20 (maybe more) individuals in the state
i know a kid who only dropped 3 marks and hes ranked 10th in his school

#### MATHmaster

##### Member
What would a 78 align to?

#### seanieg89

##### Well-Known Member
really? I got the same answer doing it a different way...
I will look over my work again, but I got sqrt(189/20) using my own method which was pretty different too.

#### RealiseNothing

##### what is that?It is Cowpea
I think a lot of these supposed 100 getters will lose a couple subtle marks. The marking isn't so straight forward.

#### RivalryofTroll

##### Sleep Deprived Entity
Thanks Carrot <3

[Using your solutions, I think my mark is around 62-64 - I originally thought 58-62 so yay!]

#### Lanxal

##### New Member
My solution was $\bg_white \sqrt{\frac{189}{20}}$, yeah, using Carrot's method.

##### Well-Known Member
What is everyone thinking of the e4 cutoff? It won't be higher than like 68.. will it?
*waits nervously*

#### bottleofyarn

##### Member
Isn't that the same thing haha. Rationalise denominator etc?
I'm a dingus, absolutely correct. Wish I got it in the test though haha.

#### RealiseNothing

##### what is that?It is Cowpea
I will look over my work again, but I got sqrt(189/20) using my own method which was pretty different too.
I made a triangle using the perpendicular bisector of CD, the radius OD, and half of CD. Then just a bit of trig.

I'm curious what was your approach?

#### SpiralFlex

##### Well-Known Member
What is everyone thinking of the e4 cutoff? It won't be higher than like 68.. will it?
*waits nervously*
The cut off for band 6 when the marking was out of 120 was 76ish. So a 68 should definitely net you a band 6.

#### Carrotsticks

##### Retired
I'm a dingus, absolutely correct. Wish I got it in the test though haha.
I'm a 'dingus' too.

Spent 1 hour on a Cosine rule question because I could not do the following:

1. Use the cosine rule correctly.

2. Use SOH CAH TOA.

##### Well-Known Member
The cut off for band 6 when the marking was out of 120 was 76ish. So a 68 should definitely net you a band 6.
Thank you. Let's hope so

#### RealiseNothing

##### what is that?It is Cowpea
Who wants to join my "lost more marks in question 11 than in question 16" crew?

Spewin' really

well im fucked