Atrain traveled 210 miles in 3.5 hours to its first stop. it then continued on traveling another 130 miles in 2.5 hours. what was the average speed of the train for the entire journey? round to the nearest tenth, if necessary. 52.0 mi/h 56.0 mi/h 56.7 mi/h 60.0 mi/h answer asap

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

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?