Two cars are headed for the intersection of the two roads. If Car A is travelling south at 40 km/h and car B is travelling east at 52 km/h, at what rate is the distance between the cars decreasing when car A is 4 km and car B is 12 km from the intersection? Note: Write only the numerical value of the rate, the units are already written. Write the exact answer not the decimal approximation (for example, write 1/2 but not 0.5). If the answer has a squre root then use the equation editor or use parentheses, for example, for √3 write (3)^(1/2) do not write (3)^{1/2} or (3)^[1/2].
Two cars are headed for the intersection of the two roads. If Car A is travelling south at 40 km/h and car B is travelling east at 52 km/h, at what rate is the distance between the cars decreasing when car A is 4 km and car B is 12 km from the intersection? Note: Write only the numerical value of the rate, the units are already written. Write the exact answer not the decimal approximation (for example, write 1/2 but not 0.5). If the answer has a squre root then use the equation editor or use parentheses, for example, for √3 write (3)^(1/2) do not write (3)^{1/2} or (3)^[1/2].
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
Problem 11P
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![Two cars are headed for the intersection of the two roads. If Car A is travelling south at 40 km/h and car
B is travelling east at 52 km/h, at what rate is the distance between the cars decreasing when car A is
4 km and car B is 12 km from the intersection?
Note: Write only the numerical value of the rate, the units are already written. Write the exact answer not
the decimal approximation (for example, write 1/2 but not 0.5). If the answer has a squre root then use
the equation editor or use parentheses, for example, for √3 write (3)^(1/2) do not write (3)^{1/2) or
(3)^[1/2]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8d81ce89-bb8e-42a9-95e4-0c739890989e%2Fc2b5ccf5-f0dd-48ef-854f-ea4c9764b5a3%2Fbmgwmyh_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Two cars are headed for the intersection of the two roads. If Car A is travelling south at 40 km/h and car
B is travelling east at 52 km/h, at what rate is the distance between the cars decreasing when car A is
4 km and car B is 12 km from the intersection?
Note: Write only the numerical value of the rate, the units are already written. Write the exact answer not
the decimal approximation (for example, write 1/2 but not 0.5). If the answer has a squre root then use
the equation editor or use parentheses, for example, for √3 write (3)^(1/2) do not write (3)^{1/2) or
(3)^[1/2]
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