Mathematics Advanced Predictions/Thoughts (4 Viewers)

[amy.q18]

Does anyone have a scan of the exam paper?

sorry?!

 

[Iceyscreen]

what did u guys get for the regression line equation and the justification

that question was so much waffle and for what justification I wasn't sure if they wanted a real life answer of just a maths answer so I put something like if you extrapolate the line, you would get to negative energy consumption (impossible) and in the summer it may rise again due to the use of air con lol

 

[Iceyscreen]

y = -10.4x + 236

Justification - You get negative energy output at 23*, so it doesnt work at higher temps

i'm so impressed u can remember all the numbers :0

 

[mollie.rc]

Was the trig Q with (θ-60) like -60, something else & 300??

Yes I did that thought it didn’t seem right but maybe it was

 

[Cathode_RT]

i'm so impressed u can remember all the numbers :0

If only I could memorise essays....

 

[Iceyscreen]

For finding the values of m for the gradient which would intersect one of the graphs, did anyone get -4<m<4

 

[mollie.rc]

y = -10.4x + 236

Justification - You get negative energy output at 23*, so it doesnt work at higher temps

I said 23° is outside the data set so is not possible but saying it’s negative is also true

 

[mollie.rc]

Nothing on trapezoidal rule the whole paper I’m so upset I was actually getting good at that

 

[Cathode_RT]

For finding the values of m for the gradient which would intersect one of the graphs, did anyone get -4<m<4

i got -4 < m < 7/6

 

[jonhysmitw2]

What do you guys recon a 70 will scale to

 

[Cathode_RT]

What do you guys recon a 70 will scale to

low b6, high b5 probably
a 74 last year scaled to 90, so idk (given that todays test was harder than 2022)

 

[jonhysmitw2]

low b6, high b5 probably
a 74 last year scaled to 90, so idk (given that todays test was harder than 2022)

What do u recon u got raw mark

 

[WeiWeiMan]

Guys is it me or was that exam much harder than 2021 2022 and 2020??? Or am I just dumb

Harder than 2020 and 2022 but imo 2021 was harder

 

[Cathode_RT]

What do u recon u got raw mark

mid to low 90's maybe? high 80's at worst

 

[WeiWeiMan]

oh no like the -(x-b)(x-c)^2 and b>0, c <0

Isn’t c positive cuz it’s a double root in the positive zone

 

[Interdice]

low b6, high b5 probably
a 74 last year scaled to 90, so idk (given that todays test was harder than 2022)

Not true. 74 was 2021. 79 scaled last year

 

[jonhysmitw2]

What did you guys get for the points of R

 

[WeiWeiMan]

What did u guys get for the M value for the withdrawal question

121.52 iirc,whatever it was, I rounded down cuz adding an extra cent would not give 100 withdrawals

 

[Cathode_RT]

What did you guys get for the points of R

(3, -24) i think

 

[ilovescottishfolds]

(3, -24) i think

i got (3, -22)