Maths Question

[squidtm]

48
_____
2(9+3)

48
_____
2(12)

48/24

2

 

[Flames66]

Using BODMAS, 288. It's just "normal secese"

 

[Karma168]

You have to make it a bit clearer what the notation is. Is it:

48/(2*(9+3)) in which case the answer is 2
or
(48/2)*(9+3) in which case the answer is 288

It all depends how it would be written out on paper; if the (9+3) is under the line then its the 1st answer. As it is in the OP it's impossible to know which version is correct, you would never see a maths question from a proper exam in that form because of this.

 

[bob1052]

48
_____
2(9+3)

48
_____
2(12)

48/24

2

If only the original question used a horizontal line instead of a /

In fact you even treat the horizontal line as different.

48
_____
2(12)

48/24

If there are multiple terms YOU put them all under but if there is only 1 term YOU use a /

YOU just proved that you rewriting it to

48
______
2(9+3)

is wrong.

 

[Brandon237]

It is dodgy with the annoying way the divide sign works
Because it can mean 48 / (2 x (9 + 3) or it can mean (48 / 2)(9 + 3).
The first makes more sense with the slash (/) so according to how you have it written, I would say 2.

My casio fx-82ES PLUS, which does order of operations, says that with the proper divide sign, you get 2. The professional calculator, made to perform order of operations as set by mathematicians themselves, says the answer is 2.

Settled.

Not really, the MS calculator, my normal calc AND my graphing calc ALL say 288...

Wasn't there a thread about this last week? It's 288.

No, it is not
I have checked, with my calculator, which does order of operations. It is 2. And I used the proper divide sign. With the slash it will be 42 over 2 x (9 + 3) which is definitely 2. So either way, it is 2.

EDIT: Oops, double post

Google calculator says 288.

Well then, I think the best way to settle it would be with a gun, and a random selection of three thousand people in very high level mathematics and all the world's calculator programmers.
Because short of that there is no definitive answer then
Maths just broke. This is not good

 

[squidtm]

48
_____
2(9+3)

48
_____
2(12)

48/24

2

If only the original question used a horizontal line instead of a /

In fact you even treat the horizontal line as different.

48
_____
2(12)

48/24

If there are multiple terms you put them all under but if there is only 1 term you use a /

Only because it didn't matter at that point and a / is easier to type.

 

[RuralGamer]

48/2(9+3)= OVER 9000!!!!!!!!!!!!!

Being serious its;
9+3=12
2(12) gets priority over a division because brackets are involved (I think), so 24
48/24=2

Can't really be certain though...

 

[YouBecame]

I've seen some disagreement about this equation.

48/2(9+3)=?

What do you guys think it is?

EDIT: I was always told that you do multiplication before division so I get 2. Also, sorry if this is a repeat thread, I haven't been on in a while.

This is equal to (48/2) * (9+3) = 24*12 = 2*12*12 - 2*144 = 288

If you want the 9+3 under the dividing line you need to bracket together as 48/ (2(9+3))



edit: To qualify me, I hold a BSc in mathematics, so I would like to think that I should know this.

 

[Thamous]

48/2(9+3)
48/2(12)
48/2*12
Now, according to the order of operations your next step would be multiplication and division.
When these to operations are in the same problem you do them from left to right, so in this case it is division then multiplication. Therefore:
24*12
288
If the original problem was:
48/(2(9+3))
48/(2*12)
48/24
2
But this is not the original problem. 2 is wrong, there is no way to proper solve this problem so as to get 2, end of story.

 

[bob1052]

48/2(9+3)= OVER 9000!!!!!!!!!!!!!

Being serious its;
9+3=12
2(12) gets priority over a division because brackets are involved (I think), so 24
48/24=2

Can't really be certain though...

Brackets only have a higher priority for the terms INSIDE.

9+3=12 is correct, but the 2 * 12 is not next because that is simply multiplication of two terms.

 

[Thamous]

48/2(9+3)= OVER 9000!!!!!!!!!!!!!

Being serious its;
9+3=12
2(12) gets priority over a division because brackets are involved (I think), so 24
48/24=2

Can't really be certain though...

The brackets(parenthesis) no long apply after the operation inside them is solved. So after you add 9+3 it is simply '12' not '(12)'.

 

[bob1052]

Only because it didn't matter at that point and a / is easier to type.

If it was easier to type and doesn't matter than why bother rewriting the equation in the first place? It would mean nothing different and would be a nuisance.

Even you clearly think they are different because you would specify it as different.

 

[Glademaster_v1legacy]

It depends the answers have already been given and this has already been said. It depends on whether that is a division or faction line. If it is division then it is definitely 288 if a fraction line it is 2. Although Casio fx-83gt plus says 2 both possibilities. Although to be honest I think it is really meant to be 48/2.(9+3) or 48/2*(9+3) it is just badly written out.

Captcha says: arsha SOLVE

 

[Speedwagon]

I've check 2 calculators and 3 web calculators all say 288. It's 24*12 not 48/24

Casio fx-300w
TI-89

Google calculator
http://web2.0calc.com/
http://integrals.wolfram.com/index.jsp?expr=48%2F2%289%2B3%29&random=false

 

[mjc0961]

It's 288. Go Google order of operations if you think otherwise.

Actually let me do it for you:

http://www.mathgoodies.com/lessons/vol7/order_operations.html
http://www.purplemath.com/modules/orderops.htm
http://www.mathsisfun.com/operation-order-pemdas.html
http://www.algebrahelp.com/lessons/simplifying/oops/

Notice a recurring theme yet? Multiplication and division are the same rank, and you go left to right to perform any multiplication and division you have in your problem/equation/whatever you want to call it.

Thus you must divide 48 by 2 first, not multiply 2 by 12 first.

You have to make it a bit clearer what the notation is. Is it:

48/(2*(9+3)) in which case the answer is 2
or
(48/2)*(9+3) in which case the answer is 288

It all depends how it would be written out on paper; if the (9+3) is under the line then its the 1st answer. As it is in the OP it's impossible to know which version is correct, you would never see a maths question from a proper exam in that form because of this.

As it is written in the OP, the answer can only be 288. It's not up for interpretation at all. Could it be written better? Yes. But it's still quite easy to simplify as it is written now.

 

[squidtm]

Only because it didn't matter at that point and a / is easier to type.

If it was easier to type and doesn't matter than why bother rewriting the equation in the first place? It would mean nothing different and would be a nuisance.

Even you clearly think they are different because you would specify it as different.

The only difference is that the horizontal line is more clearly a grouping symbol.

 

[bob1052]

The only difference is that the horizontal line is more clearly a grouping symbol.

Small issue in that they aren't grouped in the original equation.

 

[Jodah]

Written as it is because of poor translation of math using typed text it is 288. If it was written out with a vertical line rather then a slash it could, potentially, be 2.

 

[HerbertTheHamster]

48/2 * (9+3)
24 * 12
288

derp herp

 

[careful]

your going to need vector calculus and group theory to solve that equation. in fact better start off with an infinite dimensional differential manifold then introduce the transformation matrices so you can use the lee derivative, but ignore metric structure for now. have this be your starting point and with a little hard brainwork you should find a solution within the month!