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April 28, 2024, 01:47:53 am
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Author Topic: Standard Math Q+A Thread  (Read 182504 times)  Share 

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jamonwindeyer

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Re: General Math Q+A Thread
« Reply #120 on: October 10, 2016, 05:02:18 pm »
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Quote from: sarah.murphy on October 10, 2016, 10:29:03 am
Oh okay, yes yes. So it is sort of like which direction we are travelling  from a place?
Thank you so much!

Exactly! So from Sydney to Perth goes to the West, so we would be subtracting time from Sydney's time to get Perth's time! :)
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pughg16

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Re: General Math Q+A Thread
« Reply #121 on: October 17, 2016, 01:27:29 pm »
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Does anyone know where I can get more past papers for general maths?
I have done 2015, 2014, and 2013, and what questions are the same from 2012, but I am still a bit worried about Friday....
Are there any papers getting around that are like mock HSC that someone could direct me to please??
Even more trials could help..
Thanks heaps!
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jakesilove

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Re: General Math Q+A Thread
« Reply #122 on: October 17, 2016, 01:29:38 pm »
+1
Quote from: pughg16 on October 17, 2016, 01:27:29 pm
Does anyone know where I can get more past papers for general maths?
I have done 2015, 2014, and 2013, and what questions are the same from 2012, but I am still a bit worried about Friday....
Are there any papers getting around that are like mock HSC that someone could direct me to please??
Even more trials could help..
Thanks heaps!

Hey! I could be completely off, but can't you find a whole bunch of past papers on the BOSTES website, here? Click a year, hit 'G' for General Mathematics, and select the Examination Paper!
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stephanieazzopardi

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Re: General Math Q+A Thread
« Reply #123 on: October 17, 2016, 01:30:39 pm »
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Quote from: pughg16 on October 17, 2016, 01:27:29 pm
Does anyone know where I can get more past papers for general maths?
I have done 2015, 2014, and 2013, and what questions are the same from 2012, but I am still a bit worried about Friday....
Are there any papers getting around that are like mock HSC that someone could direct me to please??
Even more trials could help..
Thanks heaps!

Hi pughg16, keep doing HSC past papers! Just keep going through them all one-by-one, 2011, 2010, 2009 and so on! That's my best advice. As long as you are doing practice questions, thats all that matters!
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pughg16

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Re: General Math Q+A Thread
« Reply #124 on: October 17, 2016, 01:38:22 pm »
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So it shouldn't matter that the course has changed in some areas?
I just didnt know if the whole ourse was different, or just particular areas....I know financial mathematics is slightly different, but I have learnt how to use the formula...so thanks, will go back and do all teh years previous!!
Thanks for that!
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jakesilove

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Re: General Math Q+A Thread
« Reply #125 on: October 17, 2016, 01:44:00 pm »
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Quote from: pughg16 on October 17, 2016, 01:38:22 pm
So it shouldn't matter that the course has changed in some areas?
I just didnt know if the whole ourse was different, or just particular areas....I know financial mathematics is slightly different, but I have learnt how to use the formula...so thanks, will go back and do all teh years previous!!
Thanks for that!

Ah true, fair enough! Just go through and do questions that are still relevant, and ignore questions that are beyond the syllabus. It's definitely really tricky for a subject that has just had a syllabus change, but yeah definitely worth going through old papers anyway.
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jamonwindeyer

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Re: General Math Q+A Thread
« Reply #126 on: October 17, 2016, 03:23:58 pm »
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This is a great place to find General Mathematics Trial Papers if that helps too! :)
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pughg16

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Re: General Math Q+A Thread
« Reply #127 on: October 17, 2016, 04:24:59 pm »
+1
Quote from: jamonwindeyer on October 17, 2016, 03:23:58 pm
This is a great place to find General Mathematics Trial Papers if that helps too! :)

Thankyou Jamon! Thats awesome!
And thanks also Jake & stephanie...I wasn't sure whether it was worth going abck further! But I'll do the questions i can ;)
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mmmm675

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Re: General Math Q+A Thread
« Reply #128 on: October 17, 2016, 04:58:51 pm »
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is this the place where we can post particular questions we need help with?
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jakesilove

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Re: General Math Q+A Thread
« Reply #129 on: October 17, 2016, 05:04:50 pm »
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Quote from: mmmm675 on October 17, 2016, 04:58:51 pm
is this the place where we can post particular questions we need help with?

Yep for sure! Post away :)
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cjrig

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Re: General Math Q+A Thread
« Reply #130 on: October 17, 2016, 05:08:29 pm »
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Hi i'm having trouble with this inverse proportion question. Would someone be able to solve it please?
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jakesilove

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Re: General Math Q+A Thread
« Reply #131 on: October 17, 2016, 05:12:10 pm »
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Quote from: cjrig on October 17, 2016, 05:08:29 pm
Hi i'm having trouble with this inverse proportion question. Would someone be able to solve it please?

Hey! If we have something that's inversely proportional, we can say that



Where v is the velocity, w is the weight the lift is carrying, and k is some constant. This makes sense; as weight increases, velocity will decrease!
To answer questions like this, we need to solve for the constant first, and then sub in the value they're looking for.

The information we are given is that, at w=320kg, v=16km/h. Therefore




Great! So, our equation is going to look like



For w=250kg, we get the answer of



Thus, the answer is B
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cjrig

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Re: General Math Q+A Thread
« Reply #132 on: October 17, 2016, 05:17:54 pm »
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Quote from: jakesilove on October 17, 2016, 05:12:10 pm
Hey! If we have something that's inversely proportional, we can say that



Where v is the velocity, w is the weight the lift is carrying, and k is some constant. This makes sense; as weight increases, velocity will decrease!
To answer questions like this, we need to solve for the constant first, and then sub in the value they're looking for.

The information we are given is that, at w=320kg, v=16km/h. Therefore




Great! So, our equation is going to look like



For w=250kg, we get the answer of



Thus, the answer is B


Oh okay I get it now. Thank you! :)
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mmmm675

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Re: General Math Q+A Thread
« Reply #133 on: October 17, 2016, 06:11:59 pm »
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could i please have some help with this question?
i was going through the slide from the lectures and couldn't figure out how the answer was achieved. 0.30 x 700 = 2100, but i'm having a blank and don't know how to use the table? thanks!

Question 5: 2014 HSC Specimen Paper
The spreadsheet shows monthly home loan repayments with interest rate changes
from February to October 2012.
(i)  Xiang’s bank approves loans for customers if their loan repayments are no more than 30% of their monthly gross salary. Xiang wanted to borrow money to buy a house. Her monthly gross salary was $7000. She applied for the loan in October 2012.
What was the maximum amount that her bank would approve for her to borrow? and the answer given is $324 420
(table is attached)
« Last Edit: October 17, 2016, 07:58:18 pm by mmmm675 »
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aimbotted

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Re: General Math Q+A Thread
« Reply #134 on: October 17, 2016, 11:48:31 pm »
+1
Quote from: mmmm675 on October 17, 2016, 06:11:59 pm
could i please have some help with this question?
i was going through the slide from the lectures and couldn't figure out how the answer was achieved. 0.30 x 700 = 2100, but i'm having a blank and don't know how to use the table? thanks!

Question 5: 2014 HSC Specimen Paper
The spreadsheet shows monthly home loan repayments with interest rate changes
from February to October 2012.
(i)  Xiang’s bank approves loans for customers if their loan repayments are no more than 30% of their monthly gross salary. Xiang wanted to borrow money to buy a house. Her monthly gross salary was $7000. She applied for the loan in October 2012.
What was the maximum amount that her bank would approve for her to borrow? and the answer given is $324 420
(table is attached)

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
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