Maddenmobile7625

22.08.2019 • 

Mathematics

Let a be a 5 x 6 matrix. which of the following statements is false? a. the dimension of the null space of a could be 6. b. the dimension of the column space of a could be 6. c. the dimension of the null space of at could be 5. d. the dimension of the column space of at could be 5. e. the row space of a never equals r5.

Ответ:

ajm1132005

27.04.2023

Mathematics

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X+y = 50 pounds 
y = 50-x 

0.31x + 0.46y = 0.40·50 
0.31x + 0.46(50-x) = 20 
0.31x - 0.46x + 0.46·50 = 20 
-0.15x = -3 
x = 20 pounds of 31¢ flour 
y = 50-x = 30 pounds of 46¢ flour

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