dude... you just quoted the wrong person.4li3n said:Actually dude as plenty of high schools do use 2(x+y) to mean 2*(x+y), and in the end the symbols themselves are just an agreed upon writing system neither interpretation is so much wrong then SH or an S with a ceddila being used for the same sound.theklng said:There are two sets of (9+3), not a half set of 48. Clearly this isn't going to help, so let me explain it another way. If the question wasn't 48 ÷ 2(9+3) and was instead 48 ÷ (9+3)^2 then we wouldn't have 16 because we have a squared set of brackets, not a squared overall answer. Similarly, we have two sets of (9+3) shown by having a 2 immediately outside of the brackets.
The 2 is not inside the bracket. You are wrong.theklng said:stomping all over everyone's faulty answers: http://en.wikipedia.org/wiki/Reverse_Polish_notation
gonna edit this post to put in faulty answerer(erer)s:
wrong. brackets > division. check the wiki link.TiefBlau said:There is no ambiguity.
Division and multiplication are interchangeable operators and in the notation that we all use, it goes left to right. There's no argument about this. There just isn't any. It's like arguing over whether or not "you're" and "your" are different words. They just aren't. That's just the language we use, and no amount of semantic bullshit is going to change that.
So yeah, answer's 288.
wrong. brackets are STILL more important than division, especially when it comes to multiplying into brackets. check the wiki link.Glademaster said:No the problem is when it is written as shown here there is no ambiguity like with the other equation. What you really have after brackets have done which you have stated is 48÷2*12=288. In this case you solve the equation from left to right as division comes before multiplication so 48/2 = 24. Then 24*12= 288.
Thats kind of funny, because I also live in Australia, and I just sat 2 top level math exams for year 12 (last year of high school, next will be university ie. college)Baron_Rouge said:They say BODMAS over here in Aus, or that's what I was taught anyway. Going by that, it's 288. Brackets first, (9+3)=12. So it becomes 48/2(12), or 48/2x12 to put it another way. Whether division comes first or you do division/multiplication at the same time, left to right, it works out the same. 48/2=24. 24*12=288.
The Unworthy Gentleman said:Patronising, nice.Nimcha said:Right, that's why it's outside of them. :OThe Unworthy Gentleman said:The 2 is a part of the brackets
Nice try, though.
There are two sets of (9+3), not a half set of 48. Clearly this isn't going to help, so let me explain it another way. If the question wasn't 48 ÷ 2(9+3) and was instead 48 ÷ (9+3)^2 then we wouldn't have 16 because we have a squared set of brackets, not a squared overall answer. Similarly, we have two sets of (9+3) shown by having a 2 immediately outside of the brackets. Because it is immediately the equation cannot be rewritten as such:
48 ÷ 2 x (9+3)
but can be rewritten as this:
48 ÷ (9+3)2
It makes no difference to the way the equation works in the second form, but makes drastic changes to the way the equation works in the first one.
Um, 48 / (9 + 3)^2 would be 48 / (12 * 12) but not 48 / 12 * 12 .The Unworthy Gentleman said:Patronising, nice.Nimcha said:Right, that's why it's outside of them. :OThe Unworthy Gentleman said:The 2 is a part of the brackets
Nice try, though.
There are two sets of (9+3), not a half set of 48. Clearly this isn't going to help, so let me explain it another way. If the question wasn't 48 ÷ 2(9+3) and was instead 48 ÷ (9+3)^2 then we wouldn't have 16 because we have a squared set of brackets, not a squared overall answer. Similarly, we have two sets of (9+3) shown by having a 2 immediately outside of the brackets. Because it is immediately the equation cannot be rewritten as such:
48 ÷ 2 x (9+3)
but can be rewritten as this:
48 ÷ (9+3)2
It makes no difference to the way the equation works in the second form, but makes drastic changes to the way the equation works in the first one.
Both answers are fine more brackets are needed it doesn't get much simpler than that. You can do the brackets first then do order of operation or the way you are doing it.The Unworthy Gentleman said:Patronising, nice.Nimcha said:Right, that's why it's outside of them. :OThe Unworthy Gentleman said:The 2 is a part of the brackets
Nice try, though.
There are two sets of (9+3), not a half set of 48. Clearly this isn't going to help, so let me explain it another way. If the question wasn't 48 ÷ 2(9+3) and was instead 48 ÷ (9+3)^2 then we wouldn't have 16 because we have a squared set of brackets, not a squared overall answer. Similarly, we have two sets of (9+3) shown by having a 2 immediately outside of the brackets. Because it is immediately the equation cannot be rewritten as such:
48 ÷ 2 x (9+3)
but can be rewritten as this:
48 ÷ (9+3)2
It makes no difference to the way the equation works in the second form, but makes drastic changes to the way the equation works in the first one.
Hmmm...that is odd, given that I sat my top level year 12 maths exams as well, although in 2009...which state are you from? I'm in SA, maybe it's not standardised across the country.Emphasis said:Thats kind of funny, because I also live in Australia, and I just sat 2 top level math exams for year 12 (last year of high school, next will be university ie. college)Baron_Rouge said:They say BODMAS over here in Aus, or that's what I was taught anyway. Going by that, it's 288. Brackets first, (9+3)=12. So it becomes 48/2(12), or 48/2x12 to put it another way. Whether division comes first or you do division/multiplication at the same time, left to right, it works out the same. 48/2=24. 24*12=288.
We learn it this way: BIMDAS
Brackets, Indicies, Multiplication, Division, Addition, Subtraction.
My CASIO calculator tells me 2
My brain who earns me marks of atleast 70% in math tests tells me 2
Im sure its just a way people learn it, but as far as I can tell, the answer is 2..
I also cringe to read other posts that say 288 :[
Well, see, that's how I figure 42 - as mathematics doesn't fall into the categories of "Life" nor "the universe," it does fit quite nicely into the umbrella of "Everything."Sgt. Sykes said:42 is the answer to life, the universe and everything. But not mathematics.
As far as math goes, every number equals 47.
http://www.47.net/47society/
I'm kinda sick of the people who come into this thread thinking it's simple maths and boasting about dumb we are while completely missing the point of the thread because I can only assume they didn't bother to read it.luke10123 said:BODMAS
brackets of divide multiply add subtract.
that's maths for a ten year old
(answer's 2 obviously)
WA.. And to confirm this, we sit Math Specialist 3C/D and Math 3C/D exams.. However yours would have been different as this only came in a year ago, in 2010. Id say you would have done Calculus, G + T etc?Baron_Rouge said:Hmmm...that is odd, given that I sat my top level year 12 maths exams as well, although in 2009...which state are you from? I'm in SA, maybe it's not standardised across the country.Emphasis said:Thats kind of funny, because I also live in Australia, and I just sat 2 top level math exams for year 12 (last year of high school, next will be university ie. college)Baron_Rouge said:They say BODMAS over here in Aus, or that's what I was taught anyway. Going by that, it's 288. Brackets first, (9+3)=12. So it becomes 48/2(12), or 48/2x12 to put it another way. Whether division comes first or you do division/multiplication at the same time, left to right, it works out the same. 48/2=24. 24*12=288.
We learn it this way: BIMDAS
Brackets, Indicies, Multiplication, Division, Addition, Subtraction.
My CASIO calculator tells me 2
My brain who earns me marks of atleast 70% in math tests tells me 2
Im sure its just a way people learn it, but as far as I can tell, the answer is 2..
I also cringe to read other posts that say 288 :[
There is something you are missunderstanding which is that the 2 and the (9+3) are not glued together, they do not have brackets around them, the problem is due to peoples misinterpretation with the divide, however if we rewrite the equation to change it all into multiplication it becomes clearer.The Unworthy Gentleman said:48 ÷ (9+3)2
It makes no difference to the way the equation works in the second form, but makes drastic changes to the way the equation works in the first one.
So? The problem is we need another set of brackets and even though I am in another country than you have a high aggregate mark in your knowledge makes that person more right I was right with going with standard orderEmphasis said:Thats kind of funny, because I also live in Australia, and I just sat 2 top level math exams for year 12 (last year of high school, next will be university ie. college)Baron_Rouge said:They say BODMAS over here in Aus, or that's what I was taught anyway. Going by that, it's 288. Brackets first, (9+3)=12. So it becomes 48/2(12), or 48/2x12 to put it another way. Whether division comes first or you do division/multiplication at the same time, left to right, it works out the same. 48/2=24. 24*12=288.
We learn it this way: BIMDAS
Brackets, Indicies, Multiplication, Division, Addition, Subtraction.
My CASIO calculator tells me 2
My brain who earns me marks of atleast 70% in math tests tells me 2
Im sure its just a way people learn it, but as far as I can tell, the answer is 2..
I also cringe to read other posts that say 288 :[