Math Fun!!!

10 + 10 x 0 =

  • 0

    Votes: 23 53.5%

  • 10

    Votes: 17 39.5%

  • 20

    Votes: 3 7.0%

  • Other

    Votes: 0 0.0%
  • Total voters
    43
StSapphire said:
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Is that a snapshot of your forehead? :twisted::devil::evil:
 
shushugah said:
The order of operations is PEMDAS, which stands for Paranthesis, exponent, multiplication, division, addition and subtraction.


I got several of these wrong myself, but this one was simple. You do multiplication first so 10x0, which is 0+10=10,

QED

Anyone wanna discuss other math problems? I'll start off by posting this one,

View topic - Squares and Rectangle • Art of Problem Solving
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There were several posted in the thread already (Daredevel, PFH and I have each posted at least one, iirc), if you want to try your hand at those.

(Also, B)
 
Okay, fixed my problem. Now with variables that don't suck and correctly solved in my handy-dandy Notebook++!

Okay, here's a new problem, since I just learned a new type of math:

On a given stretch of highway, 2125 vehicles travel every hour per lane and 25 vehicles travel every mile per lane. To try and reduce the speeding, a police cruiser enters the highway in the left lane and travels the speed limit (65 mph) for a 15 mile stretch of the highway, and then exits. While doing so, no drivers are willing to pass the cop in any lane, and the traffic increases to 30 vehicles every mile per lane.

By the time the cop exits the highway, how much congestion has the cop introduced into the highway behind him/her? (Answer should be in vehicles.)
 
StSapphire said:
Okay, fixed my problem. Now with variables that don't suck and correctly solved in my handy-dandy Notebook++!

Okay, here's a new problem, since I just learned a new type of math:

On a given stretch of highway, 2125 vehicles travel every hour per lane and 25 vehicles travel every mile per lane. To try and reduce the speeding, a police cruiser enters the highway in the left lane and travels the speed limit (65 mph) for a 15 mile stretch of the highway, and then exits. While doing so, no drivers are willing to pass the cop in any lane, and the traffic increases to 30 vehicles every mile per lane.

By the time the cop exits the highway, how much congestion has the cop introduced into the highway behind him/her? (Answer should be in vehicles.)
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Sigh..... this type of problem always throws me off because it's so.... open ended. Do we take account of the transition from 25 vehicles to 30 vehicles per mile per lane? Or the chain reaction traffic caused by the congestion in that 15 mile stretch? Too many questions!

Don't tell me we have to use Diff Screw (Eq) for this problem...
 
Daredevel7 said:
Sigh..... this type of problem always throws me off because it's so.... open ended. Do we take account of the transition from 25 vehicles to 30 vehicles per mile per lane? Or the chain reaction traffic caused by the congestion in that 15 mile stretch? Too many questions!

Don't tell me we have to use Diff Screw (Eq) for this problem...
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In order:

1) Yes, the transition from 25 v/mi/ln to 30 v/mi/ln is needed.
2) Yes, the chain reaction traffic caused by the congestion is part of what you're measuring
3) Um... I don't actually know the names of the equations used to solve this, but I do know that the actual math itself is no more complex than basic algebra. (ie no calculus or trig is needed)
 
Daredevel7 said:
Oops.. I kinda assumed everyone went to high school.

Discrimination on my part? ;)
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Nah! Perversity on mine. I flunked my first six grades of school, at 12 years old I figured I'd done my time in that prison for whatever wrong I had done in some forgotten past life -- packed my bags and left.

When I showed up on my mother's doorstep a few years later she said, "I wondered what took you so long. You father ran away from the white man's school on the reservation when he was nine."

What can I say. I've always been a late bloomer.
 
I had completed Trig, and Calculus before 9th grade. Due to state requirements, I had to repeat classes even though I aced the classes. In 11th & 12th grades they brought over math courses from the Jr. College.
 
KristinaB said:
I had completed Trig, and Calculus before 9th grade. Due to state requirements, I had to repeat classes even though I aced the classes. In 11th & 12th grades they brought over math courses from the Jr. College.
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Advanced Calculus was fun. Enjoyed it.
 
StSapphire said:
Okay, fixed my problem. Now with variables that don't suck and correctly solved in my handy-dandy Notebook++!

Okay, here's a new problem, since I just learned a new type of math:

On a given stretch of highway, 2125 vehicles travel every hour per lane and 25 vehicles travel every mile per lane. To try and reduce the speeding, a police cruiser enters the highway in the left lane and travels the speed limit (65 mph) for a 15 mile stretch of the highway, and then exits. While doing so, no drivers are willing to pass the cop in any lane, and the traffic increases to 30 vehicles every mile per lane.

By the time the cop exits the highway, how much congestion has the cop introduced into the highway behind him/her? (Answer should be in vehicles.)
Click to expand...

lotsa of congestion and couple of accidents :)
 
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