Final answer:
The speed of the plane is calculated to be 1335 miles per hour, which is obtained by dividing the distance traveled by the time taken (890 miles / (2/3 hours)). However, this speed is much higher than typical airplane speeds, suggesting the provided data may not represent a typical commercial flight.
Step-by-step explanation:
To determine the speed of the plane in miles per hour, we can use the simple formula for speed, which is distance traveled divided by time taken. In this case, the plane flies 890 miles in 2/3 of an hour. We calculate the speed by dividing the distance by the time:
Speed = Distance / Time = 890 miles / (2/3 hours) = 890 * (3/2) miles per hour = 1335 mph.
Therefore, the speed of the plane is 1335 miles per hour. When we check if the answer is reasonable, we find that the calculated speed is much greater than typical commercial planes speeds. Commercial planes typically cruise at speeds around 500 to 600 mph. Therefore, the calculated speed of 1335 mph is likely too high and could be due to an error in the distance or time provided, or it could be the speed of a specially designed aircraft that can exceed the speed of commercial jets.