48÷2(9+3) = ????
#11
04-08-2011, 09:30 PM
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288
PEDMAS is correct but you multiply and divide from left to right in order of occurance
therefore,
you have to think of it like this (48/2)*(9+3)
48/2=24
24*(9+3)=24*12=288
PEDMAS is correct but you multiply and divide from left to right in order of occurance
therefore,
you have to think of it like this (48/2)*(9+3)
48/2=24
24*(9+3)=24*12=288
#13
04-09-2011, 11:00 AM
if you go in order of occurance, you're just going down the equation... PEMDAS, you supposed to do each step completely in the equation before you go to the next. You complete all multiplications BEFORE completing any divisions. With the asterisk being added, its making the 48 divided by 2 into a separate equation inside of parentheses, therefore making the calculators and alike thinking the answer is 288. The correct answer is 2. If there's anything I'm good at, its math. If you're not sure, go find your old math teacher. But the answer is 2. Just cause the google calculator says its 288, doesn't mean technology has been wrong before...
#14
04-09-2011, 11:11 AM
if you go in order of occurance, you're just going down the equation... PEMDAS, you supposed to do each step completely in the equation before you go to the next. You complete all multiplications BEFORE completing any divisions. With the asterisk being added, its making the 48 divided by 2 into a separate equation inside of parentheses, therefore making the calculators and alike thinking the answer is 288. The correct answer is 2. If there's anything I'm good at, its math. If you're not sure, go find your old math teacher. But the answer is 2. Just cause the google calculator says its 288, doesn't mean technology has been wrong before...
#15
04-09-2011, 12:47 PM
the google machine is right... google PEMDAS, and check this out:
The answer is 288.
A common technique for remembering the order of operations is the abbreviation "PEMDAS", which is turned into the phrase "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction". This tells you the ranks of the operations: Parentheses outrank exponents, which outrank multiplication and division (but multiplication and division are at the same rank), and these two outrank addition and subtraction (which are together on the bottom rank). When you have a bunch of operations of the same rank, you just operate from left to right. For instance, 15 ÷ 3 × 4 is not 15 ÷ 12, but is rather 5 × 4, because, going from left to right, you get to the division first
Last edited by bradtyler02; 04-09-2011 at 12:57 PM.
#16
04-09-2011, 12:52 PM
You should add a poll to this, vote 2, or 288, so whoever is right (288) can make fun of the ones who are clearly soooo very wrong... 
#17
04-09-2011, 06:09 PM
I did it in my old TI83 (i think) calculator, where you can put in parentheses and whatnot, and it came out with 288 as the answer. I still think its 2 tho lol. What is the importance of this anyway?
#19
04-10-2011, 08:25 AM
haha... I hope I wasn't too offensive...
Want to know the funniest thing? Last night I had a bunch of people over for some good food, a few brews, and some time by the fire pit. I grabbed a piece of sidewalk caulk and wrote this on the driveway...
The 14 year old was the ONLY one to get it right.
Want to know the funniest thing? Last night I had a bunch of people over for some good food, a few brews, and some time by the fire pit. I grabbed a piece of sidewalk caulk and wrote this on the driveway...
The 14 year old was the ONLY one to get it right.
#20
04-10-2011, 09:24 AM
haha... I hope I wasn't too offensive...
Want to know the funniest thing? Last night I had a bunch of people over for some good food, a few brews, and some time by the fire pit. I grabbed a piece of sidewalk caulk and wrote this on the driveway...
The 14 year old was the ONLY one to get it right.
Want to know the funniest thing? Last night I had a bunch of people over for some good food, a few brews, and some time by the fire pit. I grabbed a piece of sidewalk caulk and wrote this on the driveway...
The 14 year old was the ONLY one to get it right.