Bài toán vận tải là một dạng đặc biệt của bài toán Quy hoạch tuyến tính, song điểm khác biệt trong kết quả giải hai bài toán này là

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

How can you tell when x and y are not directly proportional?

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle?