If an elevation 20 meters below sea level is represented by the number -20, which of the following can best be represented by the number 0? a. an elevation 20 meters above sea level. b. an elevation at sea level. c. an elevation 20 meters below sea level. d. an elevation 40 meters below sea level.

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl