Standard Math Q+A Thread

[jamonwindeyer]

hey! i don't know how to do the fancy formatting everyone does but i do know how to answer your question

Absolute legend! You can learn that fancy formatting here if it interests you, but thanks heaps for your awesome answer!

[cjrig]

Hi, I'm having trouble figuring out this medication question. Can someone solve it please?

[jakesilove]

Hi, I'm having trouble figuring out this medication question. Can someone solve it please?

If we have 20 drops per milliliter, and there are 600 milliliters, then there will be 20*600=12,000 drops. 4 hours = 4*60 minutes = 240 minutes. Therefore, there are 12,000 drops in 240 minutes, which is 50 drops per minute! So, the answer is C

[cjrig]

If we have 20 drops per milliliter, and there are 600 milliliters, then there will be 20*600=12,000 drops. 4 hours = 4*60 minutes = 240 minutes. Therefore, there are 12,000 drops in 240 minutes, which is 50 drops per minute! So, the answer is C

Thanks! 

[mmmm675]

hey! i don't know how to do the fancy formatting everyone does but i do know how to answer your question

30% of $7000 = $2100

in october, she has $2100 for loans and the highest she can go is on $1942

this $1942 gives her a loan of $300000

however she had 2100, so 2100-1942 = $158 left

therefor, the only loans she can get are $6.47 loans

so 158/6.47 = 24.42040185

24.42040185 x 1000 = 24420 in loans

24420 + 300000 = 324420, the maximum amount she can get

Awesome! thank you so much

[pughg16]

My internal mark is in the 70's, and my rank is 16th out of 70. Is it still possible for me to get a band 6 in general?
If so, what mark should I be aiming for?

[jakesilove]

My internal mark is in the 70's, and my rank is 16th out of 70. Is it still possible for me to get a band 6 in general?
If so, what mark should I be aiming for?

You absolutely can still get a band 6 in general maths. I can't tell you what mark you need to aim for, except to say that it's completely possible, and likely if you put the work in. Your rank is good, your marks are good, and if you smash the HSC a band 6 is definitely within your grasp! If you have any questions, or anything we can help you out with, please post here

[pughg16]

You absolutely can still get a band 6 in general maths. I can't tell you what mark you need to aim for, except to say that it's completely possible, and likely if you put the work in. Your rank is good, your marks are good, and if you smash the HSC a band 6 is definitely within your grasp! If you have any questions, or anything we can help you out with, please post here

That's great. I was getting kind of worried, as that was one of my goals!
I have been working through past papers, but so far all seems to be pretty good!
I know where to go when in need though....thanks everyone on ATARNotes!!!

[luke100]

Hi there,

I was was just wondering what I should expect the layout/structure of the paper to be. Will there be the questions (in section 2) and then dotted lines to fill in the working or will we be given a writing booklet? It's just that in going through past papers and they are all different.

Cheers!

[RuiAce]

Hi there,

I was was just wondering what I should expect the layout/structure of the paper to be. Will there be the questions (in section 2) and then dotted lines to fill in the working or will we be given a writing booklet? It's just that in going through past papers and they are all different.

Cheers!

The entire structure of the mathematics general course was revised in 2014.

It would appear that from 2014 onwards, there are dotted lines to fill your working. Hence this is what you should expect.

[christopherk8]

Hi General Mathematicians   
I have an issue... i love spherical geometry but... it always confusing me when we come to times zones whether I have to plus (+) or minus (-) the hours!!!  can someone please explain it in layman's terms.
Please and thank you!

Im not sure if i pressed the correct button to reply....but this is how i think of it....
ill just give this as an example....say australia is 20 degrees east and indonesia is 35 degrees east and they ask you to calculate the time in indonesia when it is say 4 o clock in sydney.....which country has the greater degrees? Indonesia. therefore you would find the hours between them and then add that amount of hours to sydney because sydney is behind indonesia.......so essentially, which ever country has the bigger degrees is the one that is ahead of the other and therefore you would have to add the hours onto the smaller country.....hope that made sense

[jamonwindeyer]

Im not sure if i pressed the correct button to reply...

You did Chris, thanks for your contribution

[christopherk8]

You did Chris, thanks for your contribution

no worries! 

[pughg16]

Hi General Mathematicians   
I have an issue... i love spherical geometry but... it always confusing me when we come to times zones whether I have to plus (+) or minus (-) the hours!!!  can someone please explain it in layman's terms.
Please and thank you!

Hey Sarah!
My maths teacher has a little saying for this...the DAD rule. That basically stands for Different, ADd!
E.g. If you have 24* east and 48* west, as these two numbers are on different sides i.e. east and west, then add them.
However, if its 24 east and 48 east, then subtract 24 from 48. I suppose u could call this the SSUB rule (Same SUBtract  )

I don't know if that helps, but I always remember it that way!! DAD rule!!

[aimbotted]

Hey Sarah!
My maths teacher has a little saying for this...the DAD rule. That basically stands for Different, ADd!
E.g. If you have 24* east and 48* west, as these two numbers are on different sides i.e. east and west, then add them.
However, if its 24 east and 48 east, then subtract 24 from 48. I suppose u could call this the SSUB rule (Same SUBtract  )

I don't know if that helps, but I always remember it that way!! DAD rule!!

Hey! I think thats for calculating the longitudinal difference, not for when to add the hours!

What i do it use a line to indicate whether to add the hours like this:

i hope this is what you were looking for, and not the meridian and gmt stuff