2(4x - 3) 2-3(3x) + 5x

Which of these triangle pairs can be mapped to each other using two reflections?

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?

Which expression is rational? 6. , square root two, square root 14, square root 49