VCE General & Further Maths Question Thread!

[myanacondadont]

Spoiler

Help please!

Seasonal index = Actual value/Yearly mean.  Yearly mean =

Thus seasonal index =

Could someone help with Q3? I got E, from tan^-1(226/210)

That seems correct to me. Am I missing something?

Got a Multiple Choice question I couldn't figure out.

A regular pentagon, ABCDE, has all sides equal to 8cm.  The length of EC is closest to:  (The triangle is at the top half of the pentagon, thus forming a triangle with 8cm on the left and right upper sides)


I got the right answer but later figured out I mistakenly used Pythagoras, so now idk.  Thanks heaps 

So this is what I did; disregard if the answer is not A

Looking at it we have an isosceles triangle with 8cm as the identical sides. So therefore if we can deduce the included angle then we can use the cosine rule to deduce the opposite side length.
 
Considering the sum of angles in a pentagon is 540 then we can do;  Concluding that each angle is 108 degrees within the pentagon

Therefore we now have a triangle with two side lengths of 8, and an included angle of 108. Time to apply cosine rule:

Dam looks like everyone beat me to them all. Whatever I got good practice out of it.

[Splash-Tackle-Flail]

Thanks guys! I got one more if you guys wanted to help, its from the engage free exam, I tried to use the gradient to find b and c, which gave me answer D in the end, but that doesn't work because c-b=5.

[keltingmeith]

Thanks guys! I got one more if you guys wanted to help, its from the engage free exam, I tried to use the gradient to find b and c, which gave me answer D in the end, but that doesn't work because c-b=5.

IMMEDIATELY dump c and d, since the subtraction won't give 5.

So, we're stuck with a or b. Well, distance is the same at times b and c, so equate and solve:


So, the answer is a.

Dam looks like everyone beat me to them all. Whatever I got good practice out of it.

This is exactly the attitude to have!

[Splash-Tackle-Flail]

IMMEDIATELY dump c and d, since the subtraction won't give 5.

So, we're stuck with a or b. Well, distance is the same at times b and c, so equate and solve:


So, the answer is a.

Thank you!! copy and pasted right in my ref book!

[doomdestroyer]

Thank you!! copy and pasted right in my ref book!

Wait...you still have room in your reference book?

[keltingmeith]

Wait...you still have room in your reference book?

I had over 100 blank pages in mine when I walked into both my methods and specialist exams - and by that, I do mean 100 pages each.

[Splash-Tackle-Flail]

Wait...you still have room in your reference book?

Two books stuck together!

[myanacondadont]

I had over 100 blank pages in mine when I walked into both my methods and specialist exams - and by that, I do mean 100 pages each.

I'm similar to this. Currently only have ~24 pages in my further, and about ~35 in my methods reference book. Don't even know what else to put in 'em, probably more beneficial if I just spam practice exams.

[LiquidPaperz]

my bound books about 600 pages, about 3-4 books together stuck by gaffa / electrical tape lol

[myanacondadont]

my bound books about 600 pages, about 3-4 books together stuck by gaffa / electrical tape lol

Jeeez. Wouldn't expect anything less from you though lol. How's everyone preparing? I'm gonna do recent VCAA exam 1s today and then read over assessor reports tomorrow. My best subject is coming to an end

[LiquidPaperz]

Yeah similar however everything today, I don't want to touch further tomorrow

Do you know what we have to write in for exam 1 and 2??

[LiquidPaperz]

can someone help me with part c?

thanks

[LiquidPaperz]

and is there any quick way of doing these questions?

[darklight]

Hi guys

With univariate statistics on the CAS calculator we are able to construct a boxplot by typing the numbers into the List & Spreadsheets under some variable e.g. 'a' and going to Graph and Statistics. I was just wondering if it was possible/how can we construct a box plot if they give us the univariate statistics and frequency so we now have columns 'a' and 'b.'

Thanks

[darklight]

Another question - 2012 MAV Exam 1

I thought that the way to work out these question was similar to 2011 VCAA - so you do (for Labour for example) 0.2 + 0.2 = 0.4 * 300 (initial) to work out how many people change and then do the same thing for the 2 others, giving you D not C…