best anwser gets medal.. Highway construction crews often use the "grade" or steepness of a road in many of their calculations. A grade of 3% means that the road surface rises 3 feet for every horizontal run of 100 feet. A roadway that slopes up has a positive grade; likewise a roadway that slopes down has a negative grade. On a certain stretch of road, the point 420 feet east of
point A is 60 feet lower than point A. Point B, 600 feet east of A, is 84 feet lower than point A.) a. Find the grade of the road surface between points A and B.

Question

best anwser gets medal.. Highway construction crews often use the "grade" or steepness of a road in many of their calculations.  A grade of 3% means that the road surface rises 3 feet for every horizontal run of 100 feet. A roadway that slopes up has a positive grade; likewise a roadway that slopes down has a negative grade.  On a certain stretch of road, the point 420 feet east of
point A is 60 feet lower than point A. Point B, 600 feet east of A, is 84 feet lower than point A.) a.  Find the grade of the road surface between points A and B.

anonymous · Answer

b.  Would a motorist driving along a stretch of road from point B
to point A report the same grade for the road as a motorist
driving from A to B would report? Explain your response.