Stella left downtown Miami, and three hours after Martha left downtown Miami going 42 mph faster to catch up. After another 1.5 hours, Martha caught up. Find Stella's speed.

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?

2.5 milligrams is equivalent to how many grams

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14