I can’t believe this thread has 100 (now 101) posts. The answer is 9. If you get a different answer, please find my 5th grade math teacher and she will explain.
Ahhhhh Shiiiiit. Just plugged this into my calculator
Damn where is the video… Anyway… When i plugged 6/2(1+2) as the OP stated, i got 1. When i plugged in 6/2x(1+2) i got 9
[quote]TD54 wrote:
Damn where is the video… Anyway… When i plugged 6/2(1+2) as the OP stated, i got 1. When i plugged in 6/2x(1+2) i got 9[/quote]
I’ve always used the convention that a number or variable next to a parenthesis implies multiplication.
Anyway, this is silly. If this were a word problem, you’d have enough information to know (most likely) which answer is more logical, 1 or 9.
It’s all about how you interpret the question.
When somebody is asking a question like this, it is best to fully comprehend how they are looking at it.
AB/CD to me is (AB) / (CD) but if you follow those who get 9 as their result, they would assume (ABD) / C
But it seems that in a forum where writing in all caps and cussing at those who don’t agree with you determines the validity of your answer, you’re not going to come to any sort of conclusion.
The only certainty with this question is that there isn’t a final verdict on it. Some mathematicians view it as 1 and some view it as 9.
The real answer is that since it was written wrong you get the entire value of the problem deducted, and one point deducted for each line in the work.
[quote]number10 wrote:
It’s all about how you interpret the question.
When somebody is asking a question like this, it is best to fully comprehend how they are looking at it.
AB/CD to me is (AB) / (CD) but if you follow those who get 9 as their result, they would assume (ABD) / C
But it seems that in a forum where writing in all caps and cussing at those who don’t agree with you determines the validity of your answer, you’re not going to come to any sort of conclusion.
The only certainty with this question is that there isn’t a final verdict on it. Some mathematicians view it as 1 and some view it as 9. [/quote]
WRONG! THERE IS NO DIFFERENT WAY TO INTERPRET IT, IT’S PERFECTLY CLEAR, YOU’RE OBVIOUSLY A MORON.
Like I said in the other thread like this, it depends on if the first symbol in the equation is a vinculum or an obelus. In computer entry, it’s usually considered an obelus, since standard keyboards don’t have an obelus.
This…just…happened
edit: cant… believe… that… was my first post. I’m going to back out of here until I have something a bit more substantive to say.
[quote]PonceDeLeon wrote:
Mak,
I agree with you reading if left to right and giving division and multiplication the same precedence, but if he’s being taught any one of those silly acronyms, that’s the answer he should be getting: 1
He could also try several–not just one–CAS and input the problem as is to see what the answer is calculated; that should settle the discussion over “convention.”
OP,
Is this an odd numbered problem? Did you see the back of the book?
Kids these days![/quote]
I see
[quote]RSGZ wrote:
[quote]Makavali wrote:
[quote]PonceDeLeon wrote:
6/2(2+1) = 1
PEMDAS
Parentheses–(2+1) = 3
…6/2(3)
Multiplication–2*3 = 6
…6/6
Division–6/6 = 1
Why is this difficult? We are not curing cancer or integrating the Schroedinger equation.[/quote]
wat
6/2(2+1) = derp
6/2(3) = derp
the above is the same as
6/2*3 = derp (<–reading left to right)
3 x 3 = derp
derp = 9[/quote]
I’m with Mak on this one.[/quote]
baby you’re a pool on a summer day
[quote]PonceDeLeon wrote:
Mak,
I agree with you reading if left to right and giving division and multiplication the same precedence, but if he’s being taught any one of those silly acronyms, that’s the answer he should be getting: 1
He could also try several–not just one–CAS and input the problem as is to see what the answer is calculated; that should settle the discussion over “convention.”
OP,
Is this an odd numbered problem? Did you see the back of the book?
Kids these days![/quote]
The acronym is just an acronym. It doesnt change the rules. Multiplication and division have the same precedence. It depends which comes first. No where does it say that multiplicatin comes before division because the acronym says so.
9
17 dollars!
wait what…
[quote]Waylander wrote:
17 dollars!
wait what…[/quote]
straight gangster
Err, not a mathematician, but I do have a BS in mathematics by the skin of my teeth.
I’m with number10 in that I’d evaluate AB/CD as (AB)/(CD), but I parse the original equation as 6/2*(1+2) and thus perceive in my application a rule that says that proximity multiplication takes precedence only when a variable is involved otherwise it’s just a convenient way to write things and so I would evaluate that to be 9, not 1. Likewise, I’d evaluate 6/2Y as 6/(2*Y) as opposed to (6/2)*Y.
Just another random opinion on the interwebz.
[quote]John S. wrote:
[quote]Voluminous wrote:
[quote]John S. wrote:
just broke out my old Algebra book, it is definitely 9. Thats what I get for over thinking a problem.
Lesson learned don’t over think math.[/quote]
Can you write out the logic please :)[/quote]
6/2(1+2)
(1+2)=3
6/2=3
3(3)=9
I seem to remember being taught that you have to multiply 2(3) hence why I got 6/6 but I may have been mistaken.
Edit* I was mistaken I don’t kno why I keep reverting back to thinking I multiply 2(3) first.[/quote]
You are correct. If you choose to distribute first it looks like this…(6(2+1))/(2(1))=18/2=9. Still the same answer. Parenthesis first, then distribute, then reduce.
[quote]OBoile wrote:
It is somewhat ambiguous, but if the intent was to have the denominator be 2(1+2) then standard practice when writing the formula in a computer environment would be to have 6/[2(1+2)] or 6/(2(1+2)).[/quote]
End!!! I just finished with my Algebra 1410 class and the above is correct. It is even standard in a math book. At least it was in mine.
[quote]XanderBuilt wrote:
42[/quote]
I’ll be at the ‘Restaurant at the End of the Universe’ if you need me.