A police car traveling south toward Sioux Falls, Iowa, at 160km/h pursues a truck traveling east away from Sioux Falls at 140km/h. An illustration shows a police car and a truck, both are moving towards Sioux Falls. The interconnecting path shows a right angled triangle. The car is moving downward at 160 kilometers per hour toward Sioux Falls which is at a distance y. A truck is moving at 140 kilometers per hour at a distance of x, away from Sioux Falls. At time ?=0, the police car is 50km north and the truck is 30km east of Sioux Falls. Calculate the rate at which the distance between the vehicles is changing at ?=0 minutes. (Use decimal notation. Give your answer to three decimal places.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.3: Hyperbolas
Problem 38E
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A police car traveling south toward Sioux Falls, Iowa, at 160km/h pursues a truck traveling east away from Sioux Falls at 140km/h.
An illustration shows a police car and a truck, both are moving towards Sioux Falls. The interconnecting path shows a right angled triangle. The car is moving downward at 160 kilometers per hour toward Sioux Falls which is at a distance y. A truck is moving at 140 kilometers per hour at a distance of x, away from Sioux Falls.

At time ?=0, the police car is 50km north and the truck is 30km east of Sioux Falls.

Calculate the rate at which the distance between the vehicles is changing at ?=0 minutes.

(Use decimal notation. Give your answer to three decimal places.)

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