Part C) How fast is the distance from the observer to the airplane changing at the time when the airplane is 14,000

Elementary Algebra
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Author:Lynn Marecek, MaryAnne Anthony-Smith
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Chapter10: Quadratic Equations
Section10.3: Solve Quadratic Equations Using The Quadratic Formula
Problem 139E: A flare is fired straight up from a ship at sea. Solve the equation 16(t213t+40)=0 for t, the...
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Part C) How fast is the distance from the observer to the airplane changing at the time when the airplane is 14,000?
An airplane flying 380 feet per second at an altitude of 4,000
feet flew directly over an observer. The figure shows the
relationship of the airplane to the observer at a later time.
4,000
Observer
(a) The equation is x +4000 =y2.
(b) Find the value of x when y is 14,000.
X =
(Round to the nearest integer as needed.)
Transcribed Image Text:An airplane flying 380 feet per second at an altitude of 4,000 feet flew directly over an observer. The figure shows the relationship of the airplane to the observer at a later time. 4,000 Observer (a) The equation is x +4000 =y2. (b) Find the value of x when y is 14,000. X = (Round to the nearest integer as needed.)
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