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4. If y varies jointly as x and z, and x = 4 when y -19 and z = 10, find z when y = 15 and x = 11.

4. If y varies jointly as x and z, and x = 4 when y -19 and z = 10, find z when y = 15 and x = 11.

Elementary Algebra
Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter8: Rational Expressions And Equations
Section8.9: Use Direct And Inverse Variation
Problem 8.172TI: If y varies directly as x and y=12 when x=4 find the equation that relates x and y.
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4. If y varies jointly as x and z, and x = 4 when y -19 and z = 10, find z when y = 15 and x = 11.
Transcribed Image Text:4. If y varies jointly as x and z, and x = 4 when y -19 and z = 10, find z when y = 15 and x = 11.
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