A mining company owns two mines. These mines produce an ore that can be graded into two classes: regular grade and low grade. The company must p at least 180 tons of regular-grade and 400 tons of low-grade ore per week. The first mine produces 2 tons of regular-grade and 8 tons of low-grade ore hour. The second mine produces 9 tons of regular-grade and 5 tons of low-grade ore per hour. The first mine can be operated no more than 60 hours a v and the second no more than 40 hours a week. Let x be the number of hours the first mine is operated. Let y be the number of hours the second mine is operated. Shade the region corresponding to all values of x and y that satisfy these requirements. Ts 100- -80- 60- 40- -20- 20 40 60 80 100 P X

A mining company owns two mines. These mines produce an ore that can be graded into two classes: regular grade and low grade. The company must p at least 180 tons of regular-grade and 400 tons of low-grade ore per week. The first mine produces 2 tons of regular-grade and 8 tons of low-grade ore hour. The second mine produces 9 tons of regular-grade and 5 tons of low-grade ore per hour. The first mine can be operated no more than 60 hours a v and the second no more than 40 hours a week. Let x be the number of hours the first mine is operated. Let y be the number of hours the second mine is operated. Shade the region corresponding to all values of x and y that satisfy these requirements. Ts 100- -80- 60- 40- -20- 20 40 60 80 100 P X

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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