Use the simplex method to solve the linear programming problem.Maximizez = 2x1 + 5x2 + 3x3subject to: 2x1 + x2 + 3x3 ? 9 4x1 + 3x2 + 5x3 ? 12withx1 ? 0, x2 ? 0, x3 ? 0
A. Maximum is 60 when x1 = 0, x2 = 9, x3 = 5
B. Maximum is 12 when x1 = 6, x2 = 0, x3 = 0
C. Maximum is 45 when x1 = 0, x2 = 9, x3 = 0
D. Maximum is 20 when x1 = 0, x2 = 4, x3 = 0
Answer: D
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A. Not empty B. Empty
Rationalize the denominator.
A. 
B. 
C. 
D. 
Solve the problem.Robert has built a mechanical model solar system with three balls representing planets at the ends of rods attached to the center representing the sun. The planets are aligned when he turns on the motor. The innermost planet makes a revolution in 12 seconds, the middle planet makes a revolution in 20 seconds, and the outermost planet makes a revolution in 28 seconds. After how many seconds will the planets be aligned again?
A. 210 seconds B. 630 seconds C. 420 seconds D. 840 seconds
Convert as indicated. If necessary, round to two decimal places.520 milliliters to fluid ounces
A. 17.59 fl oz B. 15,376.4 fl oz C. 135.2 fl oz D. 1970.8 fl oz