VCE General & Further Maths Question Thread!

[demand&supply]

oh i see now thanks 

[darklight]

Hi guys
When a question asks you to comment on the shape, centre and spread of a distribution (3 marks), where would outliers fall under? Would you mention it under 'shape' or 'spread'?

Thanks

[Sunshine98]

Hi guys
When a question asks you to comment on the shape, centre and spread of a distribution (3 marks), where would outliers fall under? Would you mention it under 'shape' or 'spread'?

Thanks

Shape

[darklight]

Hi guys,

This is a question from 2008 Insight paper (Matrices). My question is: is this right? Isn't the total profit calculated per store rather than per fruit pack? (Also there is an error for the profit for bulk, it is meant to say 52.80-33.00)

[demand&supply]

Does anyone have solutions to the NEAP 2014 Trials (both papers)? My school didn't supply any...

[redcracker]

Hi guys,

This is a question from 2008 Insight paper (Matrices). My question is: is this right? Isn't the total profit calculated per store rather than per fruit pack? (Also there is an error for the profit for bulk, it is meant to say 52.80-33.00)

hey mate, i've done insight 2008 and i can confirm that the solutions are incorrect - you can figure out pretty obviously why by looking at the actual multiplication they present in the solutions
if ive misunderstood your question  then im sorry, but the solutions are definatly wrong

[LiquidPaperz]

does anyone know how to fill in the table and how they got those values??

heres all necessary info attached. where  b = 6,000
k = 30,000 and m=20

[LiquidPaperz]

and

[~V]

does anyone know how to fill in the table and how they got those values??

heres all necessary info attached. where  b = 6,000
k = 30,000 and m=20

You fill in the table by getting it to equal 5000 pairs of shoes. It says they need to make 5000 shoes per week, but they only make in the first 3, week(production) 1000 pairs,then they lack 4000 (deficit) as they don't reach the target of 5000. The second week, they only make 3000, they lack 2000 to get to target of 5000. For week 3, they make 3667, they lack 1333 to get to target of 5000. not really clear explanation but i hope you get it.

[LiquidPaperz]

oh yeah that makes sense, thats really easy then haha. i completely didnt even notice that!! thanks haha, that mark was the only one i lost and i was like wtf is this, haha all good now, cheers

[~V]

oh yeah that makes sense, thats really easy then haha. i completely didnt even notice that!! thanks haha, that mark was the only one i lost and i was like wtf is this, haha all good now, cheers

Yeah just read the question carefully as it says "until capacity of 5000 shoes per week is reached".I have no idea how they got k and m as well.

[darklight]

Hi guys,

A bit confused with this question - Kilbaha 2014, Graphs & Relations.

I thought the answer is D because as the y-axis is in litres (not bath level) wouldn't the volume remain unchanged even after the child is placed in the bath? Kilbaha states that the answer is B as it will shoot up when the child is placed in, but we haven't actually added any extra water? :S

For the second attached qn, I interpreted "from 2005 and including 2005" as t=0 and hence 2020, as t=15. The answer requires t=16. Does anyone have tips on interpreting things like this, I seem to muck up dates and things like that

Thanks

[Sunshine98]

Hi guys,

A bit confused with this question - Kilbaha 2014, Graphs & Relations.

I thought the answer is D because as the y-axis is in litres (not bath level) wouldn't the volume remain unchanged even after the child is placed in the bath? Kilbaha states that the answer is B as it will shoot up when the child is placed in, but we haven't actually added any extra water? :S

For the second attached qn, I interpreted "from 2005 and including 2005" as t=0 and hence 2020, as t=15. The answer requires t=16. Does anyone have tips on interpreting things like this, I seem to muck up dates and things like that

Thanks

For the first question, I think that putting aside the  volume rise that ur confused with , that the gradients of the first  line segments are incorrect for option d. This because the line segment doesn't become less steep(there is only a slight difference, which isn't really emphasised ) when the lady opens it 'partially' it still seems to be going at the same rate as the hot water which was 'fully' open . Thus ,putting aside  that volume rise option d , cannot be the right answer, so that only leaves you with b as that option has a distinctive change in the slope , from when the tap is open 'fully' and 'partially'.
I hope that helped. And ur right about the question being confusing because of  y axis having volume , not bath level .

[~V]

Hi guys,

A bit confused with this question - Kilbaha 2014, Graphs & Relations.

I thought the answer is D because as the y-axis is in litres (not bath level) wouldn't the volume remain unchanged even after the child is placed in the bath? Kilbaha states that the answer is B as it will shoot up when the child is placed in, but we haven't actually added any extra water? :S

For the second attached qn, I interpreted "from 2005 and including 2005" as t=0 and hence 2020, as t=15. The answer requires t=16. Does anyone have tips on interpreting things like this, I seem to muck up dates and things like that

Thanks

For question 2, cliche but the only way to minimize that mistake is to read carefully. it says "including 2005" so you count 2005 as t=1. Just make sure when they say including, you count from there.

[engton1796]

Matrices multiple-choice question.  Half an hour later...  still can't work it out.

If A =  |  1  4  1 |        and X =  |  p |        and AX = |  b  |         then,
          |  2  -3 0 |                      | q  |                        | 2a |
           | 1  0  0  |                      |  r |                        |  a  |

A.  r = b - a
B.  r = a - b
C.  r = -1
D.  r = 1
E.  r = a + b