<PRE><B>Question 281486</B>
Two vehicles a car and a truck leave an intersection at the same time the car heads east at 70 mph while the truck heads south at 40 mph Find an expression for their distance apart in miles at the end of t hours. At the end of t hours the vehicles are how far apart in miles? 

I saw a similar question and follwed the steps I came up with 80.62 but that is wrong what am I doing wrong? Please help. 
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Eastbound car distance = 70t miles
Sounthbound car distance = 40t miles
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distance apart = sqrt[(70t^2+(40t)^2} = 80.62t miles
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Cheers,
Stan H.</PRE>