Write a multiplication equation to represent each division equation 50 divided by 10 equals 5

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !