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Question: the figure shows the flow of traffic in vehicles per...

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The figure shows the flow of traffic (in vehicles per hour) through a network of streets. (Assume a300 and b 400.) x 1 x2 x3 x4 (a) Solve this system for x1, 2, 3, 4. (If the system has an infinite number of solutions, express X1, X2, X3, and X4 in terms of the parameter t.) (x1, X2, X3, X4)100, 300, t400,t (b) Find the traffic flow when x4 0. (x1, X2, X3, X4)100, - 300, 400, 0 (c) Find the traffic flow when x4-300 (x1, X2, x3, x4)400, 0, 700, 300 (d) Find the traffic flow when x12x2 (x1, x2, X3, X4)-
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