EXAM 2 SOLUTIONS SCANNED PAPER :)

[Stretch]

ARRGG lost one mark in trig, put 10 degrees instead of 160 for 1ei fml but everything else seems all good and lost 2 marks in exam 1 stupid fucking mistakes
anyway, whos up for meth on fri, i am!

thanks for uploading ans mate!

[physics]

for the last matrix question or so i got 2613 and 1613 :S according to my calculator..the dinosaru game was always 1000 more then the other one D:

[Zoffle]

if i could give you karma, Minnie, i would. sucks that i cant

[cjudd3votes]

Can someone confirm graphs and relations 3f/g? I wrote 175x + 50y = R but on reflection looks like it should've been (175/3)x + 50y = R. Solutions posted say what I originally wrote as well.

And if it IS 175x + 50y = R, shouldnt the maximum revenue have 'x' as a multiple of 3? aka: (33,51) as the maximum revenue point?

[Zoffle]

btw is it possible that you could just upload like number patterns even if it's blank just so we can see it?

[msf101]

How come the theory of similar shapes couldnt be used for the Flying fox question???

[ross660]

as the end was cut off (height was 4.5), the triangles weren't similar,

[crayolé]

Can someone confirm graphs and relations 3f/g? I wrote 175x + 50y = R but on reflection looks like it should've been (175/3)x + 50y = R. Solutions posted say what I originally wrote as well.

And if it IS 175x + 50y = R, shouldnt the maximum revenue have 'x' as a multiple of 3? aka: (33,51) as the maximum revenue point?

Yeah, I put 175/3 :/
I knew I had a reason for it but can;t think of it right now. Someone care to confirm once and for all?

[Benny1234]

You have to think of the new revenue as one X pillow being worth 175 and one Y pillow being worth 50
So the answer is R = 175x + 50Y
100% sure

[cjudd3votes]

Then wouldn't the maximum be (33,51) as the maximum has to be divisible by 3? You can't sell half pillows :\

[crayolé]

Oh i see how it works now
You assume that one one softsleep is sold, another 2 snorestops are sold. So one x equals three pillows

[ross660]

question 2c in geometry and trig
i got 2.5cm as it asked for the distance on the map, not the actual distance. is that right?

[xoxogossipgirl]

^^ yes

[Benny1234]

cjudd
(33,51) is within the feasible region but the verticy (35,45) produces a higher revenue
You don't have to be able to divide x by 3, you just have to sub the point into the equation 3x + y = 150 and see if it is apliccable
This is why the number of x pillows is so much less than the previous maximum revenue as it has already kind of been divided by 3 to compensate for the extra two snoresomething pillows that are produced for every x pillow

[cjudd3votes]

Ahh, think I get it now. Had (35, 45) but overthought it I think. Thank you for the explanation