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Question: 5 let the rows of a be r r2r3 fnd...

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5. Let the rows of A be r, r2.r3. Fnd a matrix B such that BA is the matrix ri+r2 r2-2r 6. One day of mining at mine A produces 20 metric tons of copper and 550 kilograms of silver, while one day of mining at mine B produces 30 metric tons of copper and 500 kilograms of silver. Let u-Ί 20 a) Given an interpretation for the vector 3u b) Write a vector equation whose solution gives the number of days each mine should op 30 d500 represent the output per day of the two mines. and v erate to produce 150 tons of copper and 2825 kilograms of silver Using software or otherwise, solve the equation from (b) c

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