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i hold a mathematics degree this is a fine troll thread don't come in here with your logic and fuck it up..lol however, the answer is 2. |
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Unless you decide you want to change BEDMAS around and go right to left or unless you want to argue that 2(9+3) isn't equal to 2(12) in which case the bracket can be dropped and made into 2*12. 48/2*12 = 288 Don't know why you would do 2(9+3) first. |
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So as it is written, it can be solved as either 288 or 2. |
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2(9+3) does not equal 2(12) it equals 24 and in this case that matters :) the same way z(9+3) is 12z. and not z X 12 |
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http://www.fugly.com/media/IMAGES/Ra...g-is-a-art.jpg |
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but it looks like some sort of differential geometry possibly you are wanting to calculate a vector to land on a planet..lol it could also just be a physics textbook its hard to say from a pic you found online somewhere :) |
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For what Americans pay for textbooks, we can never throw them away. |
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i even kept all my 1st and 2nd year lab books. so when my little guy gets to science experiment level, we will be doing 1st year university experiments for his grade 8 science competition..lol |
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IF you actually tried to distribute the 2 into the parenthesis, you'd be violating the order of operations right from the get go! Why? Because distribution is actually multiplication and you can't do multiplication before you deal with the parenthesis! So how can you possibly claim that 2(9+3) Is NOT = 2(12)?? |
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Forget the math experts! I think we have found some great debate team members;)
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While left to right has its own group, implied multiplication is a standard for going first... So this is actually:
48/(2*(9+3)) = 2. |
I got 288 from the start using bedmas which I learned in grade whatever.
So, my feeling is if I got that question on a test in grade 7, they would be looking for the answer 288 and not 2. |
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The only REAL standard is that when there is doubt, use parenthesis. So yes, 48/(2*(9+3)) = 2 and if 2 is the answer you're looking for this is the proper way to write the equation on one line. |
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48÷2(9+3) = 48/2*12 = 48/24 = 2 :thumbsup
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The people who answered I like robot chicken are the only people correct in this thread.
http://sites.google.com/site/glowing...it_playing.jpg |
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Go 1 step further. 2*12 = 24. 48/24 = 2 You don't reduce a term to an expression with a free variable (function *) in them. You reduce them as far as possible. |
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48 ---- 2(9+3) |
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(9+3) = 12 2*12 = 24 48/24 = 2 Its a linear equation just use rules of math, Parenthesis first, multiplication 2nd, division 3rd. |
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Wall Street math.
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In a case where they are both present you just go from left to right. Don't know why someone would go right to left or otherwise. |
48÷2(9+3) = 288
same as 48/2 * 12 = 288 or 48 * 12/2 = 288 or 48/2 * 9 + 48/2 * 3 = 288 It will always equal 288 Denominator (in this case is 2). If it was actually 2*(9+3) the entire denominator must be wrapped so.... (2*(9+3)). I know it's late to chime in but the answer as the formula is written is 288. |
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Correct answer is indeed 2. Cant believe this went 4 pages. And yes I have taken Calculus so I know Algebra like it was beaten into me. :) |
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And the guy who said Division is always last in an equation (and pointed out the order) is also correct. Btw, I took one course of Calc as req by my major at Univ level. After that one course I realized there are some seriously smart people in this world. We are talking huge equations and math based on math based on more math. It gets insane. But it humbles you to realize their are some seriously smart mo-fos. Mostly going back to the earlier centuries where all they did was smoke hash or opium and do math. Prob hash. |
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Excel's limitations in formulas is due to the way that program is coded and requires formulas to be written. It has nothing to do with the way the equation is written. An attempt to formulate a explanation of ambiguity due to excel's limitations is flawed Quote:
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http://www.math.unt.edu/mathlab/emat...tical_oper.htm http://ellerbruch.nmu.edu/classes/CS...mack/helen.htm http://www.r.umn.edu/academics/advis...ions/index.htm You'll notice that in case they say Multiplciation and Division should be handled left to right with no priority given to implied multiplication. So, it depends on how you're solving with which set of rules. That's why equations are never written ambigously like this and if you want to get the answer of 2, and only the answer of 2 you need to write it on two lines or with an extra set of parenthesis. As it's written 288 is a valid answer. |
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When it looks like 48/2 * (9+3) this would equal 288, this means do the addition first then left to right and you get 288. When there is no * between the parenthesis (which you will never find outside middle school math) and it looks like: 48/2(9+3) this equals 48/(2*(9+8)) This is implied in all level 1 collage algebra books, I know my husband is a CIS student and deals with a crap load of math. It would look like this being solved: 48/2(9+3) = 48/2(12) in which the parenthesis are still in play and means the multiplication must be done before the division. In a basic text book to teach this it could possibly be written as such: 2(9+3) In which this would mean you do the multiplication first then divide. ______ 48 You can also find this info on www.purplemath.com it wont be exact as I didnt copy/paste anything but you will find the same type of explanation. |
All I know is I dropped out of HS and I figured out 288 in about 3 seconds. Pay me.
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I don't think you guys understand that 2(9+3) is the exact same thing as 2 * (9+3)
There is no rule that says you would do implied first. Since there is no concrete rule then you just do it from left to right. So written like it is, the answer is 288. http://mathforum.org/library/drmath/view/54341.html A math phd spelling it out for you guys. The way it is written you do things in the order they appear. Quote:
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288. I r jenius. :D :helpme |
Well I am 27 years old, and I was tought in pre-algebra that when parenthesis is used as both a determining factor and a multiplication line you leave your answer in the parentheses and still apply determining factors which say parenthesis first everything else after. My husband agrees and he is working on his BA in Computer Information Systems and he uses these rules when he does his math. So I am going to believe him since it is getting him an A in math and other classes that use math.
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He can tape it to monetize tho, I'll sign a release... :D |
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