Two cars drive towards each other at a right-angled intersection. Car A drives straight north, and car B drives straight east. At a timepoint car A is 30 m from the intersection, and car B is 40 m from the intersection. The speed of car A is 50km/h and the speed of car B is 40km/h. How fast does the distance between the cars decrease?

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter3: Math Models
Section: Chapter Questions
Problem 441PT: Two planes leave Dallas at the same time. One heads east at a speed of 428 miles per hour. The other...
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Two cars drive towards each other at a right-angled intersection. Car A drives straight north, and car B drives straight east. At a timepoint car A is 30 m from the intersection, and car B is 40 m from the intersection. The speed of car A is 50km/h and the speed of car B is 40km/h. How fast does the distance between the cars decrease? 

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