A plane flew a total of 1920 miles at the average rate of speed of 320 mph. How long did it take the plane to cover this distance? Use the formula: D = r • t

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

How do you use the elimination method for this question? explain, because i really want to understand!

Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³