A)3@(2@4) You go by order of operations. (Parentheses, Exponents, Multiply, Divide, Add, Subtract)Parenthesis is first, so you do (2@4). Acording to the example it would look like this: 2-4+1 which equals -1. Now the problem looks like this: 3@(-1) So you use the example and make it be 3+1+1 (it could also look like this: 3-(-1)+1 )The final answer is 5. B) 3@(2@4)= 5. (3@2)@4: Parenthesis firts. 3-2+1=2. Now the problem looks like this: (2)@4. So you do 2-4+1= -1. So, 3@(2@4) & (3@2)@4 are NOT the same!
the first one is definitely five and the way the equation works the second one is common sense that they does not equal each other. So basically what every1 else said :-)
I agree with what Daniel said: A=5 because you do the parentheses first. The parentheses part(2@4) =-1. Then 3@-1=5 because 3--1+1=5. If you did 3@2 first, the answer would be -1. I think that 3@(2@4) is not equal to (3@2)@4. So, there is Not an associative property of @.
@ does not stand for minus or plus, it means that when you see A@B, it means A-B+1. So what you would do, is follow the order of operations and do 2-4+1 first. then 3--1+1 or 3+1+1=5. So the answer to (a) would be 5.
I agree with what Daniel Gordon said at the beginning because you must use PEMDAS (Parenthesis, Exponents, etc.....) So (a) is equal to 5 if you use the (Please Excuse my dear aunt sally) technique.
Well the @ sighn must mean that you do minus and then +1 at the end so its liek first perenthethis (PEMDAS) so 2-4+1 which is -1 then u do 3-(-1)+1 which is 5 the a) is 5 ( btw if i said any of the same things as any1 else sorry but i don't like to read them becuase i get the answer)
i also agree with daniel, use order of operations so do parenthesis first so 2@4 would be the same as 2-4+1 which is equal to -1 and then you do 3@-1 which is the same as 3+1+4 which is 5
for a) you can do 2@4 which would, like cobi said, be 2-4+1 which would actually be -1... then its like the same thing as A@B and add them together and subtract the 1 and you would get 5!!! i just read cobi's sorry if i copied anyone else!!! hehe
27 comments:
I think the @ sign means subtract
A)3@(2@4) You go by order of operations. (Parentheses, Exponents, Multiply, Divide, Add, Subtract)Parenthesis is first, so you do (2@4). Acording to the example it would look like this:
2-4+1 which equals -1. Now the problem looks like this: 3@(-1)
So you use the example and make it be 3+1+1 (it could also look like this: 3-(-1)+1 )The final answer is 5.
B) 3@(2@4)= 5. (3@2)@4: Parenthesis firts. 3-2+1=2. Now the problem looks like this: (2)@4.
So you do 2-4+1= -1. So, 3@(2@4) & (3@2)@4 are NOT the same!
i agree with daniel you have to use order of operations and i also agree with his answers. he did the math right
u do have to use the order of operations or it wont work
Ethan- the @ sign is defined in the problem
Also, why wouldn't you need order of operations to make the problem work?
All other problems need it. What is the point of explicitly saying it?
Also, I agree with what Daniel said.
gosh daniel! you took my answer too! yeah i got 5 for the first one and -1 for the second one. So, they do not equal each other.
you have to do the order of operation to get the answers for both of them because if you didn't you would get it wrong
and i got the same answer as every1 else
the first one is definitely five and the way the equation works the second one is common sense that they does not equal each other. So basically what every1 else said :-)
Nice comments.
So does that mean that there IS or IS NOT an associative property of @ ????
I agree with what Daniel said: A=5 because you do the parentheses first. The parentheses part(2@4) =-1. Then 3@-1=5 because 3--1+1=5. If you did 3@2 first, the answer would be -1. I think that 3@(2@4) is not equal to (3@2)@4. So, there is Not an associative property of @.
Along with everyone else i got the same thing...5 and -1.
@ does not stand for minus or plus, it means that when you see A@B, it means A-B+1. So what you would do, is follow the order of operations and do 2-4+1 first. then 3--1+1 or 3+1+1=5. So the answer to (a) would be 5.
I agree with what Daniel Gordon said at the beginning because you must use PEMDAS (Parenthesis, Exponents, etc.....) So (a) is equal to 5 if you use the (Please Excuse my dear aunt sally) technique.
For (b) i got -1 which isn't the same as (a) therefore (a) is equal to 5 and (b) is no or -1
Well the @ sighn must mean that you do minus and then +1 at the end so its liek first perenthethis (PEMDAS) so 2-4+1 which is -1 then u do 3-(-1)+1 which is 5 the a) is 5 ( btw if i said any of the same things as any1 else sorry but i don't like to read them becuase i get the answer)
You have to do order of operations so you do (2-4+1)and that is -1. Then 3@5= 3-(-1)+1 is 5. Then (3@2)is 2. 2@4 is -1. So no they are not the same
just clarifying...are we supposed to know what the @ sign means?
i also agree with daniel, use order of operations so do parenthesis first so 2@4 would be the same as 2-4+1 which is equal to -1 and then you do 3@-1 which is the same as 3+1+4 which is 5
for a) you can do 2@4 which would, like cobi said, be 2-4+1 which would actually be -1... then its like the same thing as A@B and add them together and subtract the 1 and you would get 5!!! i just read cobi's sorry if i copied anyone else!!! hehe
ohhhh theres a second one! THEY ARE LIKE NOT EQUAL AT ALL! the first ones 5 the second is like -1 or something
@ means you subtract the number in front and add 1 but the problems aren't equal because the left side equals 5 and the right -1
i think the first answer is 5 and the second answer is no and yes order of operations is important
i think the first answer is 5 and the second answer is no and yes order of operations is important
i dont understand is it asking for what the @ symbolizes?
The problem tells you that @ means subtract a and b and then add 1.
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