(a) an angle measures
42°
. what is the measure of its supplement?
(b) an angle measures
45°
. what is the measure of its complement?

Which statements about these triangles is true

Which of the following is correct interpretation of the expression -4+13

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?