What ratio can be used to covert meters to kilometers a.100km/1m b.1000km/1m c. 1km/1000m d. 1km/10m

How do i do this activity, is appreciated

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Arectangular yard has area 96 square feet. if the width of the yard is 4 feet less than the length