# Carrotsticks' Solutions 2015 Extension 1 HSC (1 Viewer)

#### coz707

##### Member
I proved the particle was moving downwards by showing that the horizontal position was > the midpoint (half of the endpoint)

Is this an acceptable method?

#### Carrotsticks

##### Retired
I proved the particle was moving downwards by showing that the horizontal position was > the midpoint (half of the endpoint)

Is this an acceptable method?
That is acceptable.

#### vflaash

##### Member
would i lose marks for newtons approximation method if i just said x=2.57 without radians?

#### apurba

##### Member
carrotsticks, for the probability question, if i got the answer by stating that 7C5 - 6 = 6C4 (just by speculation using calculator), will I still get 1/1?

#### dan964

##### what
Re: Carrotsticks' Solutions 2015 Extension 2 HSC1

I think I got 100 then. How do they distinguish the state rankers?
well done, but you also need to have a reasonable assessment rank/final mark.
unless SR is just the exam.

#### Drsoccerball

##### Well-Known Member
carrotsticks, for the probability question, if i got the answer by stating that 7C5 - 6 = 6C4 (just by speculation using calculator), will I still get 1/1?
I think an explanation was required.

#### Carrotsticks

##### Retired
would i lose marks for newtons approximation method if i just said x=2.57 without radians?
Definitely not.

carrotsticks, for the probability question, if i got the answer by stating that 7C5 - 6 = 6C4 (just by speculation using calculator), will I still get 1/1?
Very hard to say for this one.

If many people did not attempt it, and the question was done poorly overall, then it is more likely you may get away with this. Otherwise, if a decent enough (I am using this term loosely as I do not know exact figures) number of students DO get it, then I'm afraid you won't make the cut.

#### T-R-O-L-O-L

##### TOO GOOD TO BE CLASSIFIED
Good job carrotsticks. You better do it for the 2016 HSC too

#### Drsoccerball

##### Well-Known Member
Good job carrotsticks. Please can you do it for 2016 HSC too ?
ftfy.