Homework Help: algebra

Posted by Nabil on Monday, October 10, 2011 at 6:37am.

two buses leave at the same time.
one travels west at 40 mph.
the other goes north at 30 mph.
When will they be 400 miles apart?

algebra - tchrwill, Monday, October 10, 2011 at 9:34am
(30t)^2 + (40t)^2 = 400^2
algebra - T U BHARGAV, Monday, October 10, 2011 at 11:30pm
30t+40t=400
70t=400
t= 400/70
=5.71hrs
After 5.71hrs they will be at 400miles apart.

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