MATH 0120 Quiz: MAT-120 algebra-Quiz 8-358
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Name: solve the systems of equations by hand: (a) 2x 2y + z = 25 (b) x y + 3z. 4x + 2y + 4z = 6 x + 5y 5z = 4 (c) 3x + 2y + 8z = 2 x + 3y + 5z = 2x y + 3z = 6: solve the system using any method x + y 2z. = 300: determine the inverse by direct computation, show all work. Then check your answer using the shortcut for a 2 2 matrix. 1 : multiply (a b) if a = 2 4 6 a. 4 1 3 b ! and b = . 5: maximize p = 8x + 7y subject to: 2x + 5y 23 x 0, y 0: maximize p = 6x + 4y subject to : 5x + 6y 53 x + 4y 19. 2x + y 10 x 0, y 0: company sweet home makes three lines of chairs.
