exam 2 thoughts + answers, applying sticky

[dashkenny]

was the question asking for the reducing balance rate?

coz i just used the depreciated value (5277) and chucked it into the formula i got :|

here's what i did -

rate = (1-(5277/10000)^(1/5)) X 100
       = 12%


maybe i read the question wrong :|

[joechan521]

joechan: i hope you wrote your formula with the words instead of y and x? im sure u did tho
edit: joechan i think your residual value is wrong? i got -.22 (13.55-13.77 = -.22)

yeah i wrote the words, but couldn't be stuffed typing all that in here.

hmm i forgot my working out on the residual. what was the question?

[dashkenny]

joechan: i hope you wrote your formula with the words instead of y and x? im sure u did tho
edit: joechan i think your residual value is wrong? i got -.22 (13.55-13.77 = -.22)

yeah i wrote the words, but couldn't be stuffed typing all that in here.

hmm i forgot my working out on the residual. what was the question?

nah i'm with joe, i got -.09 as well :|

[nh4n]

CORE Q1) a) bell shape with trail to the right, positive skewed
bi) 26 ii) 19.4%
Q2a) 1964
bi)13.77 ii)-0.09 iii) 0.013
Q3bi) y=60.3x-776.9
c)randomly scattered above and below the axis
d)83%
e] strong positive linear

GEOMETRY
Q1a)12cm
b)20.6
c)41.1
d)1/2
Q2b) 3344
Q3a)7168
c)420
Q4a)3/4
b)37/64

GRAPH
Q1a) 30
b)190
c)95
Q2a)10.8
c) ave.speed>75km/h
d)$7.92
Q3a)the number of hours driving =<24h
c)yes as x=10y=5
d)max 18 min17


MATRICES
Q1a)
[160
280
180
80  ]
bi) 1890
ii) 4x4
iii) total energy
c) b=4 m=4 p=2 h=1
Q2 a) 700
b)0.5
ci)
[160
280
180
80]
ii) 280
iii)56
iv)7
v)
[0
0
0
700]
di)
[190
280
180
80]

ii) 130

geometry, 1c i think u got it wrong, shouldnt it be 180 - 2.previous answer or maybe i read it wrong

[dashkenny]

it depends if you use previous answer or exact values for geo.1c)

if you use previous answer you get 41.2 if exact then its 41.1 either one should be fine

[nh4n]

it depends if you use previous answer or exact values for geo.1c)

if you use previous answer you get 41.2 if exact then its 41.1 either one should be fine

no it should be 180 - 41.2 or 180 - 41.1 as it is the bigger angle or did i read question wrong?

[dashkenny]

nah pretty sure it's asking for AWB. so 41.x was correct

[hifer]

was the question asking for the reducing balance rate?

coz i just used the depreciated value (5277) and chucked it into the formula i got :|

here's what i did -

rate = (1-(5277/10000)^(1/5)) X 100
       = 12%


maybe i read the question wrong :|

I think they wanted the depreciated value to be $4000 after 5 yrs..

[dashkenny]

mother fuckkkkker..

should have spent my time reading the questions over instead of writing the answers down T_T

should still get one method mark :|

fuckkkkkk there goes my 50

[nh4n]

zz ya my bad i got it wrong =/

[maxleng]

joechan: i hope you wrote your formula with the words instead of y and x? im sure u did tho
edit: joechan i think your residual value is wrong? i got -.22 (13.55-13.77 = -.22)

yeah i wrote the words, but couldn't be stuffed typing all that in here.

hmm i forgot my working out on the residual. what was the question?

nah i'm with joe, i got -.09 as well :|

hmmmm, from what i can remember: Actual: 13.55 Predicted using formula: 13.77

Residual = Actual - Predicted
                13.55 - 13.77 = -.22 ??

[joechan521]

it depends if you use previous answer or exact values for geo.1c)

if you use previous answer you get 41.2 if exact then its 41.1 either one should be fine

no it should be 180 - 41.2 or 180 - 41.1 as it is the bigger angle or did i read question wrong?

the previous answer Q1b)was 20.55 rounds off to 20.6
i used the exact value to calculate Q1c) which was 2times the angel in q1b), so therefore 41.1

and the question was asking the angel AWB where W is the top of the triangle

[reg]

Yah, i got -.22 residual too.

[*insert witty name here*]

it depends if you use previous answer or exact values for geo.1c)

if you use previous answer you get 41.2 if exact then its 41.1 either one should be fine

no it should be 180 - 41.2 or 180 - 41.1 as it is the bigger angle or did i read question wrong?

lol yeh the more accurate answer is 41.1 degrees, but you'll definitely get the full mark if you wrote 41.2 because you used the previous answer. i've checked vcaa's previous assessment reports and they award full marks if your answer is dervied from the previous question.

i'm still waiting on sequences and series answers =P

[hifer]

Yah, i got -.22 residual too.

i got -0.09..