 |
|
You are not logged in! F.A.Q Log in Register |
 |
|
 |
 (nobody)...and 247 guests Last 5 registered Oplandisks nothingstar N_loop yipe foxtrotromeo Browse members... |
 |
Members 8025Messages 2614081 Today 1 Topics 127542 |
|
|||||||||
| |||||||||
|
|
a train travels 150 km in the same time that a plane covers 400 km. If the speed of the plane is 20 km per hr less than 3 times the speed of the train, find both speeds. can someone tell me how to do this |
||||||||
|
|
|||||||||
| |||||||||
|
|
42 |
||||||||
|
|
|||||||||
| |||||||||
|
|
LMAO (FALLS TO THE FLOOR LAUGHING) no |
||||||||
|
|
|||||||||
| |||||||||
|
|
1+2=4 |
||||||||
|
|
|||||||||
| |||||||||
|
|
this house is full of comedians tonight. can someone do the joke about solving this equation i'd appreciate it :) |
||||||||
|
|
|||||||||
| |||||||||
|
|
i log on to xltronic to get away from math. how dare you! |
||||||||
|
|
|||||||||
| |||||||||
|
|
Blah, it's just an equation with two unknown factors, it shouldn't be that hard. |
||||||||
|
|
|||||||||
| |||||||||
|
|
oh yeah. why don't YOU solve it then smartass!! HAH! |
||||||||
|
|
|||||||||
| |||||||||
|
|
Because I'm tired. Maybe tomorrow. |
||||||||
|
|
|||||||||
| |||||||||
|
|
sorry. math problems get me upset |
||||||||
|
|
|||||||||
| |||||||||
|
|
The train is travelling at 60km/h and the plane is travelling at 160km/h. |
||||||||
|
|
|||||||||
| |||||||||
|
|
Oh, and I might be full of shit, I didn't really think about this problem. |
||||||||
|
|
|||||||||
| |||||||||
|
|
i saw this girl and i ate her pussy. then later she was like "i like it when we play doctor" |
||||||||
|
|
|||||||||
| |||||||||
|
|
yes, 160 and 60... slow traffic :) |
||||||||
|
|
|||||||||
| |||||||||
|
|
I am so smart, I am so smart, SMRT...I mean SMART (Homer J Simpson) |
||||||||
|
|
|||||||||
| |||||||||
|
|
thats correct, but can u show me how u got it |
||||||||
|
|
|||||||||
| |||||||||
|
|
i didnt take pictures |
||||||||
|
|
|||||||||
| |||||||||
|
|
100% *gold star* |
||||||||
|
|
|||||||||
| |||||||||
|
|
first you calculate that train makes 0.375 distance of the plane in the same time...and then, there's a formula i don't know so it usually takes me couple of minutes to try few different numbers :) |
||||||||
|
|
|||||||||
| |||||||||
|
|
maybe ecnadniarb can tell us a formula? :) |
||||||||
|
|
|||||||||
| |||||||||
|
|
we apologize for the inconvenience |
||||||||
|
|
|||||||||
| |||||||||
|
|
You are given the formula: p = 3t - 20 where p is the planes speed and t is the trains speed. If you try it with the plane travelling at 400km/h you get 400 = (150 * 3) - ? 400 = 450 - ? -50 = -? ? = 50 We know that p = 3t - 20 is equivelent to 400 = (150 * 3) - 50. Using the known factors of 50 and 20 we can work out the ratio 0.4 you just multiply the distance by this ratio to find the speed. 400 * 0.4 = 160 150 * 0.4 = 60 And there you have it. |
||||||||
|
|
|||||||||
| |||||||||
|
|
good job lee |
||||||||
|
|
|||||||||
| |||||||||
|
|
Thank you, at least someone appreciated it :D |
||||||||
|
|
|||||||||
| |||||||||
|
|
sorry. i wanted to thank you for showing me how you got it, but there has to be a shorter way to do this. all the linear equations i've done so far in the book are formulated in a way where i dont need to create ratio's. regardless if this is the only way to do it or not i'll keep working on it YOU SMART! |
||||||||
|
|
|||||||||
| |||||||||
|
|
'math problem' ....so redundant |
||||||||
|
|
|||||||||
| |||||||||
|
|
i'm sorry maybe i should've labeled it Applications of Systems of Linear Equations to make it a little bit more exciting for you |
||||||||
|
|
|||||||||
| |||||||||
|
|
alright alright break it up you two!!! *holds fuckwagon back :p |
||||||||
|
|
|||||||||
| |||||||||
|
|
i'm not in the mood for geriatrics especially from an upside down wagon |
||||||||
|
|
|||||||||
|
Messageboard index
|
|||||||||
