Mathematics, 07.07.2021 08:10 kiyomi58

Phineas is driving toward an intersection at a rate of 30 km/h while along the perpendicular road through the intersection Ferb drives away from the intersection at a rate of 50 km/h. When Phineas was already 4 km from the intersection, Ferb was already 3 km from it. At this exact instant, how fast is the distance between the two changing? Are they getting closer to or getting farther from each other at this instant?

Phineas is driving toward an intersection at a rate of 30 km/h while along the perpendicular road t

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