A linear programming model is given as follows: Minimize 5:2x1 2:5x2 6:0x3 s:t: 3x1 2x2 2x3 1200 x1 x1 x2 x3 0:4 x2 x3 2x1 0:2 x1 x2 x3 x1; x2; x3 0 Solve the problem by using the computer. (a) What are the optimal objective function value and the optimal point

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).