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Half of you will get this wrong: 48÷2(9+3) = 288 or 2?
- Thread starter AKIRA
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people have always said that US degree's arent as higher level as other countries and if you got top class honours and you have NO IDEA what you are talking about im starting to agree.
48÷2(9+3) IS exactly the same as 48÷2 X (9+3), (and for those confused by the X sign its a multiplication, someone was confused earlier in this thread and thought i was solving for x?!)
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I took the time to dig out my old college algebra book after my leg workout this morning, and Built is correct, no i'fs and's or but's.
Because multiplications and division have the same rank, they cannot be broken up in any way, not even with a fraction bar. The order of operations has to be performed from left to right.
The answer and only answer is 288.
Because multiplications and division have the same rank, they cannot be broken up in any way, not even with a fraction bar. The order of operations has to be performed from left to right.
The answer and only answer is 288.
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At the high school level correct. You can put a degree from Northwestern, MIT, Harvard, Yale, Stanford, Michigan, Princeton, etc, against anywhere in the world.
"tightly bound"? LMAO this isn't chemistry!
You meant "affect", not "effect". Oh, and the rest of your statement is wrong, too.
Given some of the posts in here, I'm inclined to agree.
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This thread almost made me and my girlfriend break up
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A calulator will always work the problem from left to right...since the calculator is only as good as the person inputting the information
In this problem you will have to break down the parenthesis first, you always do the parenthesis first...always in mathematics...which mean you have to distribute the 2 since the 2 is attached to the parenthesis....which looks like this...
48÷2(9+3)
=48÷(2*9+2*3)
= 48÷(18+6)
= 48÷24
= 2
Always do the parenthesis or what is in or attached to the parenthesis first in math...
In this problem you will have to break down the parenthesis first, you always do the parenthesis first...always in mathematics...which mean you have to distribute the 2 since the 2 is attached to the parenthesis....which looks like this...
48÷2(9+3)
=48÷(2*9+2*3)
= 48÷(18+6)
= 48÷24
= 2
Always do the parenthesis or what is in or attached to the parenthesis first in math...
Hahahaha!This thread almost made me and my girlfriend break up
You're half right - it's only as good as the person programming the calculation algorithm, too. Case in point: Excel sometimes comes up with a negative r-squared when you run linear regression.
Manufacturers of calculators have from time to time tried to come up with more "user-friendly" inputting that ignores the usual rules of math and instead uses what people usually THINK they're asking the machine to deliver. They invariably fail until the user learns to work around these hacks.
RPN was an approach I very much appreciated - that, plus the inevitable "where's the equal button?" when people asked to borrow your calculator.
Almost. "÷2" is the same as "??½".
Thus
48 ÷ 2(9+3)
becomes48 ?? ½(9+3)
48 ?? [½(9)+½(3)]
48 ?? (4.5 + 1.5)
48 ?? (6)
= 288
48 ?? [½(9)+½(3)]
48 ?? (4.5 + 1.5)
48 ?? (6)
= 288
jagbender
Registered
288
This thread is more amusing than any other on the boards
Throw some politics or religeon in here for some extra fire!
Good job Built!
This thread is more amusing than any other on the boards
Throw some politics or religeon in here for some extra fire!
Good job Built!
This is completely incorrect
I grew up in Canada
Correct!
the notation of 2(a) implies that you have a group of 2 a's
so if you divide by 2(a), you have to view that as a single unit, not dividing by 2 and then multiplying by a
with your logic, does 48 / 2a = 48 ÷ 2a ?
Is there a difference here?
so if you divide by 2(a), you have to view that as a single unit, not dividing by 2 and then multiplying by a
with your logic, does 48 / 2a = 48 ÷ 2a ?
Is there a difference here?
well done, myk.
Nope. Marat nailed it.
Dammit Neil, you're bringing down the Canadian average.
God you're dumb.
the acronym you used is PEDMAS not PEMDAS.
Go back to school wannabe.
Cool. Some other person made the same mistake you did.
I imagine it's nice to take comfort in that.
Some smart calculators were programed properly and show that there is a difference between these two
FIRST, Akira, I saw this thread on another board.
Do you attend the joe rogan board also?
SECOND,
Anyone who thinks it's 288 DOES NOT KNOW MATH.
GO back to school and see if your random method of solving equations gets you very far.
/thread
Nope. Marat nailed it.
Dammit Neil, you're bringing down the Canadian average.
I'm sorry you don't understand
Someone's PMS'ing hard.
You have a degree right? And you still don't know elementary math operations?
Hahahahahaha I'll inform NSERC you've placed a lien on the graduate scholarship I earned with my math degree.
Someone's PMS'ing hard.
You have a degree right? And you still don't know elementary math operations?
I have two science degrees - my first degree is a BSc in math, and my second is a MSc in op log. I earned a national graduate scholarship for my math degree. I tutored algebra and undergraduate calculus and stats, and worked as a teaching assistant for the Faculty of Science while in university.
You?
Also wrong. You have to bleed to get PMS.
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