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+--- Thread: Wtf! (/showthread.php?tid=9164)
Wtf! - antisocial1 - 12-09-2005
It\'s not that bad... I remember doing problems in math class, and they all start to read like that after about 15 or 20 problems, and it all runs together to the point where you have no freak\'n idea what it is asking!
Wtf! - HERETIC - 12-09-2005
2 Trains leave the station headed in opposite directions. The first train is traveling at 30 mph for the first half hour, then travels at 50 mph for the next hour and a half. Train 2 travels the entire 2 hours at 40 mph. At the end of the trip, how far apart are the two trains and which train arrives first to its destination?
Wtf! - antisocial1 - 12-09-2005
Are they leaving the same station? If so, they\'d be 170 miles apart after the 2 hours lapse-with no stops. And, since they both travel for 2 hrs, I\'d assume they\'d arrive at their destination at the same time??
Wtf! - HERETIC - 12-09-2005
Yes, same station.......the answer is:
Train 1 goes 30(.5) + 50(1.5) = 90 miles
Train 2 goes 40(2) = 80 miles
Thus, it is 170 miles total. And yes, the travel time is 2 hours, so they arrive at the same time. It was a trick question. I always hated word problems.
Wtf! - antisocial1 - 12-09-2005
Yay! I\'m smart!!! lol
I like \'em.
I love algebra, but calculus is satanic. -_-
Wtf! - HERETIC - 12-09-2005
Ok, time for a better one......
Let\'s see here....
In a given instrument, the signal strength is a function of the temperature according to: c(ln(t)+1) where c is a constant. In order to have a RSD of 0.5% in the overall signal, to what degree must the temperature be controlled?
Wtf! - antisocial1 - 12-09-2005
Oh, please, I can\'t calculate that with the given info!
Wtf! - HERETIC - 12-09-2005
I changed it....I forgot how to do the stupid flagpole ones.....hint for the new problem......RSD = 0.5% ..... ^I/I = 0.05
Wtf! - coreyfeldman - 12-09-2005
Just got out of Cal.201 final, spent 6 hours studing last night.
A man 6 ft. walks at a rate of 5 ft. per second toward a light that is 20 ft. above the ground. When he is 10 ft. from the base of the light, at what rate is the tip of his shadow moving?
Wtf! - antisocial1 - 12-09-2005
Um... *glances at watch* time for me to go to lunch! Maybe when I get back though, lol.
It\'s definately good to do math. I haven\'t had to take any math courses (minus chem 1 & 2) since 11th grade in high school.