Search for question
Question

4. Two cars are starting from positions that are 20 miles apart. They are both headed for the same intersection, as depicted in the diagram below. Car A is traveling

at 30 mph, and Car Bis traveling at 45 mph. Which car will reach the intersection first? Part I: Use the law of cosines to determine how far Car B has to travel to reach the intersection. (2 points) Part II: Use distance = rate · time to determine the time necessary for Car A to reach the intersection. Round your answer to the nearest hundredth of an hour. (1 point) Part Ill: Use distance = rate time to determine the time necessary for Car B to reach the intersection. (1 point) Part IV: Which car reaches the intersection first, and by how many hours? (2 points)

Fig: 1

Fig: 2

Fig: 3

Fig: 4

Fig: 5

Fig: 6