10. A 72m open top rectangular tank with a square base x-meter on a side and y-meter deep is to be built with its top flush with the ground to catch runoff water. The costs associated with the tank involve not only the material from which the tank is made but also an excavation charge proportional to C= 50(x the product xy. If the total cost is + 4xy)+100xy, what value of x and y will minimize it?

10. A 72m open top rectangular tank with a square base x-meter on a side and y-meter deep is to be built with its top flush with the ground to catch runoff water. The costs associated with the tank involve not only the material from which the tank is made but also an excavation charge proportional to C= 50(x the product xy. If the total cost is + 4xy)+100xy, what value of x and y will minimize it?

Algebra for College Students

10th Edition

ISBN:9781285195780

Author:Jerome E. Kaufmann, Karen L. Schwitters

Publisher:Jerome E. Kaufmann, Karen L. Schwitters

Chapter12: Algebra Of Matrices

Section12.CR: Review Problem Set

Problem 35CR: Maximize the function fx,y=7x+5y in the region determined by the constraints of Problem 34.

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