Ahigh-speed train is moving at a speed of 210 mph. which speeds are the same as the train’s speed? choose all answers that are correct. 12,600 mi/min 5040 mi/day 18,480 ft/min 308 ft/h

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square