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| 12 May 2011 | #11 |
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Quote: Originally Posted by SledgeDG 
Quote: Originally Posted by mickey megabyte i protest! (48÷2)(9+3) is not valid syntax for arithmetic! - at least it wasn't when they were trying to educate me.4  I learned that operations with Brackets (or are those parentheses?) are assumed Multiplications unless specified otherwise. Letters in Algebra are only substitutes/placeholders for numbers, so it wouldn't make any sense at all to apply a different set of rules here for instance, in arithmetic 52 = 52 (ie 5*10 + 2), however in algebra, it's different: for example, ab=a*b, so it does make sense to apply a different set of rules in the two separate fields of mathematics. at least, it makes sense to me |
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| 12 May 2011 | #12 |
| | This goes both ways I'd say... |
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| 12 May 2011 | #13 |
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Quote: Originally Posted by Bill2 He he Micky, you went to school a loooong time ago.  Ok, suppose we solve like this. 48÷2(9+3) = 48÷2(12) Now, as per BODMAS, the division operator takes precedence over the (implied) multiplication operator so: =24(12) =288. Can I vote again? parenthesis is used to divide pertaining to an operation to be done in this case 48÷2(9+3), 2(9+3) note that parenthesis is used in (9+3) means do this first (9+3)=12, next 2(12) still parenthesis has not been removed so 2(12)=24, final operation is 48÷24=2 another method for 48÷2(9+3) is to distribute 2 inside (9+3), (18+6)=24, then 48÷24=2 (Distributive Law) |
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| 12 May 2011 | #14 |
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Quote: Originally Posted by rbeldua
Quote: Originally Posted by Bill2 He he Micky, you went to school a loooong time ago. Ok, suppose we solve like this. 48÷2(9+3) = 48÷2(12) Now, as per BODMAS, the division operator takes precedence over the (implied) multiplication operator so: =24(12) =288. Can I vote again? parenthesis is used to divide pertaining to an operation to be done in this case 48÷2(9+3), 2(9+3) note that parenthesis is used in (9+3) means do this first (9+3)=12, next 2(12) still parenthesis has not been removed so 2(12)=24, final operation is 48÷24=2 Distributive Law Are you a professor of some sort? |
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| 12 May 2011 | #15 |
| | Distributive law says get rid of brackets, but does it say when? |
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| 12 May 2011 | #16 |
| | [QUOTE=oreo27 Are you a professor of some sort?[/QUOTE] where? who me? no...  |
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| 12 May 2011 | #17 |
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Quote: Originally Posted by Bill2 Distributive law says get rid of brackets, but does it say when? |
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| 12 May 2011 | #18 |
| | By adding the 9 + 3 in the brackets, the distributive law has been taken care of. After that BODMAS takes over. |
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| 12 May 2011 | #19 |
| | Here's the final verdict. It's 288. I stand corrected. I'll post my source if you guys would like me to. |
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| 12 May 2011 | #20 |
| | I change my mind I should've gone 288... |
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