Express 12mm : 0.48m as a ratio in its simplest form

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

What are the greatest common factor of 75 and 30

Ben and cam are scuba diving. ben is 15.815.8 meters below the surface of the water. cam is 4.24.2 meters above ben. what is cam's position relative to the surface of the water? choose 1 choose 1 (choice a) a 11.611.6 meters above the surface of the water (choice b) b 11.611.6 meters below the surface of the water (choice c) c 2020 meters above the surface of the water (choice d) d 20 meters below the surface of the water