View Poll Results: 48÷2(9+3) = ????

2


29 
80.56% 
288


7 
19.44% 


04082011, 02:17 PM

#11

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Now, anyone with a sci calc punch it in. You can also use excel. Then post up the ansers you get. I still stick by my answer of 2. But you might be surprised at the answers we get. There'* a reason why this equation is seen a lot.



04082011, 02:23 PM

#12

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I entered thsi in to excel, answer is 288, it auto adds multiply. When I get home I'll see what my calc comes up with.



04082011, 02:30 PM

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In that regard, it was a bad question to begin with as parentheses weren't placed where they needed to be in order to write it on one line. You can't come up with a good answer to a bad question.



04082011, 02:37 PM

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Hence my first post.



04082011, 02:55 PM

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Quote:
Originally Posted by Danthurs
Resolve brackets first to get 48/2 (12)
Then division on the left: 24 (12)
Therefore 24*12 = 288
BODMAS is the order of operations:
B Brackets first
O Orders (ie Powers and Square Roots, etc.)
DM Division and Multiplication (lefttoright)
AS Addition and Subtraction (lefttoright)
Depend on how the question is written.
48/2(9+3) yeilds 2
48/2*(9+3) yields 288
So without the implied multiplication the order of operations seems to be affected.

Come on Dan, dont disappoint me lol
Brackets first, thats correct
48/2(9+3)
48/2(12)
so what have you done now? you still have the brackets there
48/24 brackets are gone
now you devide
answer is 2
another way to prove you wrong
look at xtremerevolution. the (9+3) is supposed to be devided by, i dunno how did you bring it up to multiply



04082011, 02:57 PM

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Look up this equation. And enter it in to a calc. I did it here and got 288 entered as you have it.



04082011, 04:05 PM

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[yt]http://www.youtube.com/watch?v=Lo4NCXOX0p8[/yt]



04082011, 05:33 PM

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The answer is not 2 because yes pemdas shows how we need to go in order. But when it comes to multiplication and division you go in order from left to right.
So yes the 9+3 is done first but then the equation is done in order from left to right. 48 divided by 2 then that product multiplied by 12.
If you wanted the 48 to be divided by the rest of the equation needs to be in parentheses.as shown 48/(2(9+3)).
Remember don't over complicate things gentlemen. There is only one way to do math or our sciences would be in trouble.
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04082011, 05:34 PM

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the calc does from left to right regardless
proper writing of this equation is 48/[2(9+3)]
how do you solve a(b+c)
isnt it (ab+ac)? now if abc were numbers means you got rid of the equation which proves BEDMAS
is you divide 48/2 first then multiply that means you didnt get rid of the brackets.



04082011, 05:38 PM

#20

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Never the less how you would rewrite it. The original equation does not equal 2.



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