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Subject: QUADRATIC EQUATION
Replies: 6 Views: 1526

amitkr.m 25.02.11 - 08:02am
A TRAIN TRAVELS A DISTANCE OF 480KM AT A UNIFORM SPEED.IF THE SPEED HAD BEEN 8KM/H LESS,IT WOULD HAVE TAKEN 3HOURS MORE *

fanking 4.03.11 - 08:02am
I dont understand, what do we have to do? *

bestboy2 13.08.11 - 09:49pm
Dist 1 =dist 2time=dist/spdav speed=x480/x=3-(480/x+8)480/x=1440-3x+8480=1440x-3x2+8x-3x2+1432x=480 *

jerx 27.08.11 - 07:45pm
3x-8y-24=0 *

jerx 27.08.11 - 08:45pm
D=S*T
i. 480=S*T.480=ST
ii.(S-8)*(T+3)=480
ST-8T+3S-24=480
from (i) ST=480 so
on (ii)
480-8T+3S-24=480
-8T+3S=480-480+24
-8T+3S=24
3S-8T-24=0 *

frankm14 31.03.12 - 05:27pm
1 1=0,prove it? *

portiap 11.10.12 - 09:38pm
exatly whats the question here?im confused. *

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