The figure below shows a circle with center O, diameter AP, and tangent PD. Which of the angles must be right angles? Select all that apply

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?

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set

Tell whether the two rates form a proportion