Car B starts 30 miles directly east of car A and begins moving west at 90 mph. At the same moment car A begins moving north at 60 mph. At what rate is the distance between the cars changing after t=1/3 hr?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
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Car B starts 30 miles directly east of car A and begins moving west at 90 mph. At the
same moment car A begins moving north at 60 mph. At what rate is the distance between
the cars changing after t=1/3 hr?
A. 90 mph
B. 80 mph
C. 60 mph
D. 50 mph
Transcribed Image Text:Car B starts 30 miles directly east of car A and begins moving west at 90 mph. At the same moment car A begins moving north at 60 mph. At what rate is the distance between the cars changing after t=1/3 hr? A. 90 mph B. 80 mph C. 60 mph D. 50 mph
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