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Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your