View Poll Results: 48÷2(9+3) = ????

54.55%

288

45.45%

Voters: 55. You may not vote on this poll

Are we smarter than bodybuilders?

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#121

04-08-2011, 06:42 PM

mike.bucci

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so if i decide to go to college, will you guys do my math homework for me?

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#122

04-08-2011, 06:43 PM

jp_greenville13

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Quote:

Originally Posted by jeffjones

Maybe you were asleep in Basic high school algebra.

Distributive property
The distributive property comes into play when an expression involves both addition and multiplication. A longer name for it is, "the distributive property of multiplication over addition." It tells us that if a term is multiplied by terms in parenthesis, we need to "distribute" the multiplication over all the terms inside.

2(5 + y) = 10 + 2y

Even though order of operations says that you must add the terms inside the parenthesis first, the distributive property allows you to simplify the expression by multiplying every term inside the parenthesis by the multiplier. This simplifies the expression.

I don't think her was asleep. I think he is just able to wrap his mind around the idea that you can't use it if it doesn't work. I'll be watching the Redwings while you try to figure that out...

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#123

04-08-2011, 06:43 PM

bluedevil3758

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your still missing the fact that you cant just distribute the 2, its 48/2 that must be distributed to the (9+3) thus giving us 288... again because the / is to the left of the 2*(9+3)...

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#124

04-08-2011, 06:43 PM

jpanside@gmail.com

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48÷2(9+3)=x

log(48÷2(9+3))=logx

log(48)-log(2)+log(12)=log(x)

This clearly shows the relationship between the different parts of the equation.

log(48/2)=log(x/12)

48/2=x/12

288=x

Can't believe I had to do such a simple problem using logs.

/thread

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#125

04-08-2011, 06:45 PM

bluedevil3758

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Quote:

Originally Posted by mike.bucci

so if i decide to go to college, will you guys do my math homework for me?

i work for beer

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#126

04-08-2011, 06:47 PM

PlayfulGod

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PEMDAS-parentheses, exponents, multiplication, division, addition, subtraction

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#127

04-08-2011, 06:55 PM

jp_greenville13

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Pg its multiplication and division, addition and subtraction

Just to be clear.

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#128

04-08-2011, 06:59 PM

PlayfulGod

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Quote:

Originally Posted by jp_greenville13

Pg its multiplication and division, addition and subtraction

Just to be clear.

hey I c/p'ed it lol. I posted it on FB too lol. This is quite a popular problem if u look on google lol.

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#129

04-08-2011, 07:01 PM

jpanside@gmail.com

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hmmm let us see what WOLFRAM APLHA, the creators of Mathematica, says...

48÷2(9+3) - Wolfram|Alpha

Mathematica - Wikipedia, the free encyclopedia

lol Z posted this on his FB and they all think it is 2...

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