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Author Topic: 6÷2(1+2)=?  (Read 6086 times)

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Offline CrankyOldGuy

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Re: 6÷2(1+2)=?
« Reply #25 on: March 12, 2013, 06:59:09 PM »
Evaluating Algebraic Expressions
Order of Operations/P.E.M.D.A.S.: Exercise I
Evaluating algebraic expressions can be a simple process,
but needs to follow an order of operations to get the right answer.
The sequence details the order you follow to
add, subtract, multiply, and divide. The order is:

P.E.M.D.A.S.
Parenthesis | Exponents | Multiplication | Division | Addition | Subtraction

Perform the operations inside a parenthesis first
Then exponents
Then multiplication and division, from left to right
Then addition and subtraction, from left to right
You can also create a little phrase to memorize, as the sequence:
Please Excuse My Dear Aunt Sally

Harry O.
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Online scottly

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Re: 6÷2(1+2)=?
« Reply #26 on: March 12, 2013, 07:11:18 PM »
6/2(1+2) can also be expressed as 6/{2(1+2)}. The extra brackets are normally deleted by convention.
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Re: 6÷2(1+2)=?
« Reply #27 on: March 12, 2013, 07:18:21 PM »
Putting it another way, what is 6 divided by? 2x(1+2) =6.
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Offline kpier883

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Re: 6÷2(1+2)=?
« Reply #28 on: March 12, 2013, 07:41:58 PM »
This could rival the airplane on the moving tarmac thing  :P

But the answer is 9 according to my recollections and understanding of order of operations, but that was a long time ago...
« Last Edit: March 12, 2013, 07:56:00 PM by kpier883 »
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Offline Roach Carver

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Re: 6÷2(1+2)=?
« Reply #29 on: March 12, 2013, 07:49:20 PM »
I waz thankin nine. Is I rong?
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Offline kpier883

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Re: 6÷2(1+2)=?
« Reply #30 on: March 12, 2013, 07:56:30 PM »
I thank you iz right!
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Offline Raef

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Re: 6÷2(1+2)=?
« Reply #31 on: March 12, 2013, 08:24:37 PM »
the daughter, who is currently taking calculus, says its 1 and goes on to says if it was (6÷2)(1+2) then it would be 9
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Online scottly

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Re: 6÷2(1+2)=?
« Reply #32 on: March 12, 2013, 08:30:31 PM »
Quote from: Raef on March 12, 2013, 08:24:37 PM
the daughter, who is currently taking calculus, says its 1 and goes on to says if it was (6÷2)(1+2) then it would be 9
Thank you ;)
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 6÷2(1+2)=?
« Reply #33 on: March 12, 2013, 08:56:01 PM »
Quote from: Raef on March 12, 2013, 08:24:37 PM
the daughter, who is currently taking calculus, says its 1 and goes on to says if it was (6÷2)(1+2) then it would be 9

That's what I'm talkin bout  ;) huh Scottly. This ain't even calculus either. Algebra perhaps  ;)
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Online scottly

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Re: 6÷2(1+2)=?
« Reply #34 on: March 12, 2013, 09:06:42 PM »
Freshman year Algebra 1. My older sister was in the same class, and it REALLY pissed her off that I got A's and I spent most of my time in class daydreaming about motorcycles. ;D
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Offline goldarrow

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Re: 6÷2(1+2)=?
« Reply #35 on: March 12, 2013, 09:18:52 PM »
I'm cheap, I go with 1

But google calculator says 9

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Offline Duke McDukiedook

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Re: 6÷2(1+2)=?
« Reply #36 on: March 12, 2013, 09:25:43 PM »
This isn't even algebra, just simple arithmetic.

And we all know that bird doesn't fly...  ;)
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Online scottly

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Re: 6÷2(1+2)=?
« Reply #37 on: March 12, 2013, 09:48:26 PM »
It's all in the notation. What is 2(1+2)/6=? The left-to-right rule works in this case, yet it is exactly the same equation... ;)
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Offline Gregorymoto

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Re: 6÷2(1+2)=?
« Reply #38 on: March 13, 2013, 06:14:00 AM »
Quote from: Raef on March 12, 2013, 08:24:37 PM
the daughter, who is currently taking calculus, says its 1 and goes on to says if it was (6÷2)(1+2) then it would be 9

Dude, your kid is very wrong. This is not even really Algebra, it's basic operations.
I spent 9 years getting a masters in mechanical engineering from the University of Washington. My Minor study was in Physics. LOL, when I had a job i used math all the time. I'd bet $2000 right now that the answer is 9. HELL ill bet my bike!!! and my Bike is worth way more than 2G.
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Offline Roach Carver

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Re: 6÷2(1+2)=?
« Reply #39 on: March 13, 2013, 06:16:33 AM »
Let make this more forum friendly.

1+3=?
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Offline markb

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Re: 6÷2(1+2)=?
« Reply #40 on: March 13, 2013, 06:18:37 AM »
Uh....5?  ;)
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Offline Raef

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Re: 6÷2(1+2)=?
« Reply #41 on: March 13, 2013, 06:23:40 AM »
Quote from: Gregorymoto on March 13, 2013, 06:14:00 AM
Quote from: Raef on March 12, 2013, 08:24:37 PM
the daughter, who is currently taking calculus, says its 1 and goes on to says if it was (6÷2)(1+2) then it would be 9

Dude, your kid is very wrong. This is not even really Algebra, it's basic operations.
I spent 9 years getting a masters in mechanical engineering from the University of Washington. My Minor study was in Physics. LOL, when I had a job i used math all the time. I'd bet $2000 right now that the answer is 9. HELL ill bet my bike!!! and my Bike is worth way more than 2G.
I m sure the reason it was posted is because of the conflict it would create, I personally don't care. the daughter walked pass the cpu and seen what I was reading and threw in her 2 cents.

but, if the airplane in question had enough trust to create more pressure under it than over it it would lift off with out forward motion
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Offline madmtnmotors

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Re: 6÷2(1+2)=?
« Reply #42 on: March 13, 2013, 06:27:25 AM »
3.1415926535897932384626433832795








MMMMMMMMMMMMM.....pi(e)  ;)
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Offline Gregorymoto

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Re: 6÷2(1+2)=?
« Reply #43 on: March 13, 2013, 06:30:19 AM »
Quote from: Raef on March 12, 2013, 08:24:37 PM
the daughter, who is currently taking calculus, says its 1 and goes on to says if it was (6÷2)(1+2) then it would be 9

just wanted to also say  (6÷2)(1+2)= is the same as  6÷2(1+2)= the notation is just a little different.
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Offline Duke McDukiedook

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Re: 6÷2(1+2)=?
« Reply #44 on: March 13, 2013, 07:34:09 AM »
Quote from: Gregorymoto on March 13, 2013, 06:14:00 AM
Quote from: Raef on March 12, 2013, 08:24:37 PM
the daughter, who is currently taking calculus, says its 1 and goes on to says if it was (6÷2)(1+2) then it would be 9

Dude, your kid is very wrong. This is not even really Algebra, it's basic operations.
I spent 9 years getting a masters in mechanical engineering from the University of Washington. My Minor study was in Physics. LOL, when I had a job i used math all the time. I'd bet $2000 right now that the answer is 9. HELL ill bet my bike!!! and my Bike is worth way more than 2G.

If I were you I would not lay any money on the answer to this problem. The answer depends on a few factors, I'll put it that way.
 
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Offline Gregorymoto

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Re: 6÷2(1+2)=?
« Reply #45 on: March 13, 2013, 07:43:37 AM »
lololololololololoooooooooo LOLOLO ;D
Thats funny, So an expression of math is affected by factors.
Are you talking about the factors of each number? or like Wind and Rain.
Basic math is just that, The rules are set the only factors are in the numbers them selfs.
I'm going to stop. I dont want to piss anyone off.
If you want bet, let me know.
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Offline jgmmgood

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Re: 6÷2(1+2)=?
« Reply #46 on: March 13, 2013, 08:03:35 AM »
I would not bet Gregorymoto.  He is right. 
FWIW, I have a degree in math and taught it for awhile.  (not that having a degree matters in this case or any case for that matter!)
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Offline Duke McDukiedook

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Re: 6÷2(1+2)=?
« Reply #47 on: March 13, 2013, 08:08:54 AM »
The only problem with Gregory's assertion is that there is a rule to follow.
There is no arithmetic rule, it is only a recent convention.

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Offline Gregorymoto

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Re: 6÷2(1+2)=?
« Reply #48 on: March 13, 2013, 08:11:24 AM »
Quote from: DukieFrankenkit on March 13, 2013, 08:08:54 AM
The only problem with Gregory's assertion is that there is a rule to follow.
There is no arithmetic rule, it is only a recent convention.


Dude you are reaching way out... wayyyyyyyy out..
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Offline Gregorymoto

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Re: 6÷2(1+2)=?
« Reply #49 on: March 13, 2013, 08:15:43 AM »
Ok i'm game. Give me an example.
Also, what do you define as recent?
300 years 400 years 100 years 5 years?
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