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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 statements are true about additional information for proving that the triangles are congruent check all that apply

Which rule describes the composition of transformations that maps △abc to △a”b”c