what does 48÷2(9+3) equal?
Topic Locked
Topic LockedReason: Topic served its purpose.
Closed by:
DT_Battlekruser
DT_Battlekruser
UnholyUrine
Apr 8 2011, 9:24 pm
![[Avatar]](/uploads/avatar/92.jpg) ;)
|
BEDMAS bro
48/(2(9+3)) 48/(2(12)) 48/(24) 2 |
HCM™Aristocrat
Apr 8 2011, 9:32 pm
![[Avatar]](/uploads/avatar/6163.png) ✁ - - - - - - - - -
|
There is a huge difference between 48/(2(9+3)) and 48/2(9+3). The latter case is to be assumed, thus the answer is 288.   |
CecilSunkure
Apr 8 2011, 9:54 pm
![[Avatar]](/uploads/avatar/3057.gif)
|
What the hell... BEDMAS? How about the normal PEMDAS. Parentheses, exponent, multiplication, division, addition, subtraction. In that order.
So depending on the algorithm the calculator is using you will get 48/24 or 24*12. The math problem is poorly written. You're supposed to use parentheses to denote the order of operations. A well written problem would be more like 42/(2(9+3)). This post was edited 1 time, last edit by CecilSunkure: Apr 8 2011, 10:00 pm.  |
HCM™Aristocrat
Apr 8 2011, 10:06 pm
|
✁ - - - - - - - - -
|
That sort of coding is due to lazy programmers (simpler to write code that multiplies parentheses together first). The proper method is to process them in sequential order.
|
ClansAreForGays
Apr 8 2011, 10:34 pm
![[Avatar]](/uploads/avatar/73.jpg)
|
Unless everything after 48 is on the lower half of the fraction, which it is. Your insertion of parenthesis are wrong.
|
poison_us
Apr 8 2011, 10:44 pm
![[Avatar]](/uploads/avatar/4200.png) (•‿•)
|
I doubt my single act are wrong. In any case:
That means 48/2(9+3), which is equal to (48/2)(9+3). Agreed, it isn't exactly clear if he meant 48/(2*(9+3)), or if he meant what he typed. In either case, I'm assuming A) that he's writing exactly what he means and B) he's not trolling. My B) was incorrect, I'll admit that. Obviously, any idiot can see this is one big troll thread. My mistake, I thought that Ultipoo posted something legitimate for once. I guess I forgot how he was in his absence. In any case, I'll take it to my calc professor monday, and I will record (yes, record) his reaction and post it here. I doubt it will be anything more than "whoever thought it was two was mistaken, because 48/2 is 24 and 24 times the quantity of 9 plus 3 is 24 times 12 and that gives me 288". Yes, that's exactly how he talks. |
Vrael
Apr 8 2011, 10:52 pm
![[Avatar]](/uploads/avatar/1321.jpg)
|
PEMDAS. BEDMAS is a lie.
48 / 2 * (9+3) P -> 48 / 2 * 12 E -> 48 / 2 * 12 M -> 48 / 24 D -> 2 A -> 2 S -> 2 = 2 There is no other way, there is no discrepancy. Evaluate in PEMDAS order. If that's not the answer you want, add more parentheses to properly denote your order of operations. Multiplication != Division, precisely because of discrepancies like this. Poison_us, you are not a math major, because you are wrong. Also, when you bring it to your prof, don't hand write it. Hand written mathematical operations don't have discrepancies because we don't have to write horizontally like this text. On second thought, the answer could be 42. I'm joking, you can still be a math major  This post was edited 3 times, last edit by Vrael: Apr 8 2011, 11:03 pm. |
poison_us
Apr 8 2011, 11:13 pm
|
(•‿•)
|
http://en.wikipedia.org/wiki/Common_operator_notation 1 + 2 + 3 * 4 * 5 + 6 + 7 = ((((1 + 2) + ((3 * 4) * 5)) + 6) + 7) So you're saying that their example should read (((1+2) +(3*(4*5))+6)+7), correct? Although this does not change the value ~ only stupid examples use problems that can be rearranged like this and still get the same answer. |
DT_Battlekruser
![[Avatar]](/uploads/avatar/3542.jpg)
.. as you Pee![[Avatar]](/uploads/avatar/786.png)
![[Avatar]](/uploads/avatar/1406.png)
![[Avatar]](/images/avatars/3.gif)
![[close]](/images/up.gif)
