How fast is the distance between the cars changing at that moment?

S

Samantha H

New member
Car A is traveling north on Highway 16 and car B is traveling west on Highway 83. Each car is approaching the intersection of these highways. At a certain moment, car A is 80 km from the intersection and traveling at 70 km/h while car B is 60 km from the intersection and traveling at 55 km/h. How fast is the distance between the cars changing at that moment?
 
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