Question 833141
Their travels form a right triangle and the right angle has vertex at the departure location.



Legs of Triangle_____speed_____________time____________distance
eastbound____________r+1______________6_______________(r+1)6
southbound____________r_______________6________________r*6
Hypotenuse______________________________________{{{d^2=highlight_green(((r+1)*6)^2+(r*6)^2=30^2)}}}


Solve the hypotenuse, Pythagorean relationship equation for r.