Section II (3 Viewers)

[jln]

i got 8pm wed. for 26and its $12.50 for 23d

nope it was 8am thursday.
you minus-ed however many hours it was, but you had to do that, ( because that would be the time the message was sent at, not recieved), anddd then go forwards 14 hours (thats how long it took to deliver the message)
therefore 8am thursday.

 

[2pmhottest]

Guys for Question 27 C GUYSMary has the better chance of winning let me explain this to youMary has 2/100 tickets which is 1/50 which is 2 percent. Jane has 1/100 + 1/100 so she also has 2 percent chanceHOWEVER the question states determine the better chacne of winning AT LEAST one PRIZEso there for mary still has a 2/100 chance of winning at least one prize and also 98/100 to LOSEJANE HOWEVER has 1/100 to win 1st raffle and 99/100 to lose the 2nd raffle is the same 1/100 to win and 99/100 to loseBUT JANE U MUST CALCULATE HER CHANCE OF WINNING AT LEAST 1 prize so it is1/100 x 99/100 + 1/100 x 99/100 WHICH EQUAL to 1.98% of her winningso therefore MARY HAS a 2 % chance of winning while jane has a 1.98 chance of WINNING AT LEAST ONE PRIZEand i am 99% sure this is the correct answer let me know what u guys think</SPAN> .............OK THERE IT IS !!!

 

[wayne_d]

Simplify 5-2(x+7)

= 5-2x-14
= -9-2x

this cannot be simplified any further, as it did not state (Find the value of x, nor did it state that (5-2(x+7)=0), therefore no value can be placed for x



I also had 8am on Thursday on the other question

 

[lookleft]

Thanks heaps for that

but damn

goodbye 4 marks

dw. cant believe i managed to both figure it out, and remember how to do it. im sure you did fine.

 

[Nivek5]

Lets just list answers to every question... make life easier

23D i ) 12.5
ii) 3$

24A) i) 78
ii) 46

SKIPING B cbf.

C) Some bs answer about data being used to located either senior or youth trends and supplying them with crap.

D) i) y = 200 - x
ii) It breaks the 120 and 150 limit (summarised)
iii)B = 4000 Profit
C = 3450 profit

B is better by $550


E) i) 1200
ii) Something to do with the function, Exponential i think never hits 0 blah blah blah


25) -9-2x acording to most people
b)2x10 ^-6 i think i got that
C) 508 M Squared
ii) 76200 times
D) i)21.6
ii) 83.85


26) i) 4
ii)75%
iii) Not sure on this one..

b)i)135+105 = 245
240/15 = 16hours ( 360 degrees = 24 hours )

cbf typing anymore
Correct me if wrong lol

 

[Freshjiver]

Simplify 5-2(x+7)

= 5-2x-14
= -9-2x

this cannot be simplified any further, as it did not state (Find the value of x, nor did it state that (5-2(x+7)=0), therefore no value can be placed for x



I also had 8am on Thursday on the other question

THANKYOU. i love you; you are the voice of reason on this forum of retards.

 

[xxheersaletixx]

i think i did alright =] and stupid multi choice that triangle question spent soo long on it LOL

 

[zak_abc]

Re: General Thoughts: General Mathematics

omg i do the exact same subjects as you thats heaps weird...

 

[Tulii]

Yeah drawing a table for the last question would have clarified it for many people.

They were not all equal out comes.. It was the DIFFERENCE.

Eg, if a 1 and a 4 were rolled the differnce would have been 3.. and so on.

You then had to add up the amount of times each number came up (from 1-5) by placing it over 36 and multipling by 18.

e.g. if the difference of 0 came up 8 times then it would be 8/36 X 18 = 4

You then had to compare it to the two experiments, experiment 2 showed the least differences. Therefore the guy was right.

 

[blue_butterfly]

Yeah drawing a table for the last question would have clarified it for many people.

They were not all equal out comes.. It was the DIFFERENCE.

Eg, if a 1 and a 4 were rolled the differnce would have been 3.. and so on.

You then had to add up the amount of times each number came up (from 1-5) by placing it over 36 and multipling by 18.

e.g. if the difference of 0 came up 8 times then it would be 8/36 X 18 = 4

You then had to compare it to the two experiments, experiment 2 showed the least differences. Therefore the guy was right.

Yer, thats exactly what I did!
Not sure that experiment 2 showed the least difference though. I put it for my answer but I was still so doubtful. O well, regardless I'll get marks for my working

 

[Question?]

what any1 get for the area of the terrace?

 

[emma211]

what any1 get for the area of the terrace?

13.77?

 

[JB10]

Q26 A iii

Q26 C iii

Q27 A iii

Q28 C

Q28 D


All had me a little stumped

 

[hayleyharlequin]

not sure i had mary at 1/50 and jane at P 1-(NO WIN) = 1-99/100 x 99/100 which had mary winning by 0.1%

i had mary at 1/50 and jane at 1. and then i just got totally confused by it all and left it. :|

 

[Freshjiver]

Ok, i have a query for Question 23cii).

i) Find the area of the terrace.

...... = 13.77m2

ii) Tiles are sold in boxes. Each box holds one square metre of tiles and costs $55. When buying the tiles, 10% more tiles are needed, due to cutting and wastage.
Find the total cost of the boxes of tiles required for the terrace.

So you go 13.77 + 10/100x13.77 = 15.147m2.
So this means that they need 16 boxes, not 15, as it's more than 15 and they can't buy part of a box.

Am i correct..?

 

[rowdyroddy]

Ok, i have a query for Question 23cii).

i) Find the area of the terrace.

...... = 13.77m2

ii) Tiles are sold in boxes. Each box holds one square metre of tiles and costs $55. When buying the tiles, 10% more tiles are needed, due to cutting and wastage.
Find the total cost of the boxes of tiles required for the terrace.

So you go 13.77 + 10/100x13.77 = 15.147m2.
So this means that they need 16 boxes, not 15, as it's more than 15 and they can't buy part of a box.

Am i correct..?

yes that is all correct

although i put down 16 boxes technically, i also put or 15 boxes to save some wastage.

 

[JB10]

Ok, i have a query for Question 23cii).

i) Find the area of the terrace.

...... = 13.77m2

ii) Tiles are sold in boxes. Each box holds one square metre of tiles and costs $55. When buying the tiles, 10% more tiles are needed, due to cutting and wastage.
Find the total cost of the boxes of tiles required for the terrace.

So you go 13.77 + 10/100x13.77 = 15.147m2.
So this means that they need 16 boxes, not 15, as it's more than 15 and they can't buy part of a box.

Am i correct..?

You better be! Because that's exactly what I got

 

[Freshjiver]

Sweeeeet.

What about Question 25b):

'The mass of a sample of microbes is 50mg. There are approximately 2.5x10^6 microbes in the sample.

In scientific notation, what is the approximate mass in grams of one microbe?'

Sooo i went; 50mg / 2.5x10^6
Which gave me 1 / 50000 ; the mass of ONE microbe in mg.
Then as it said give the answer in grams ; i went 1 / 50000 divided by 1000.
Which gave me 1 / 50000000.
Which is, in scientific notation, 2x10^-8

Anyone else get this..?

 

[jamesjoker]

Sweeeeet.

What about Question 25b):

'The mass of a sample of microbes is 50mg. There are approximately 2.5x10^6 microbes in the sample.

In scientific notation, what is the approximate mass in grams of one microbe?'

Sooo i went; 50mg / 2.5x10^6
Which gave me 1 / 50000 ; the mass of ONE microbe in mg.
Then as it said give the answer in grams ; i went 1 / 50000 divided by 1000.
Which gave me 1 / 50000000.
Which is, in scientific notation, 2x10^-8

Anyone else get this..?

yeh, i got that exact same answer

 

[hazza9]

Sweeeeet.

What about Question 25b):

'The mass of a sample of microbes is 50mg. There are approximately 2.5x10^6 microbes in the sample.

In scientific notation, what is the approximate mass in grams of one microbe?'

Sooo i went; 50mg / 2.5x10^6
Which gave me 1 / 50000 ; the mass of ONE microbe in mg.
Then as it said give the answer in grams ; i went 1 / 50000 divided by 1000.
Which gave me 1 / 50000000.
Which is, in scientific notation, 2x10^-8

Anyone else get this..?

I got that answer as well