Mathematics, 21.10.2019 17:10 neariah24
Suppose two cars are travelling north along a road. car 1 travels at a constant speed of 50 mph for two hours, then speeds up and drives at a constant speed of 100 mph for the next hour. the car breaks down and the driver has to stop and work on it for two hours. when he gets it running again, he continues driving recklessly at a constant speed of 100 mph. car 2 starts at the same time that car 1 starts, but car 2 starts 100 mi. farther north than car 1 and travels at a constant speed of 25 mph throughout the trip.
a. sketch the distance-versus-time graphs for car 1 and car 2 on a coordinate plane. start with time 0 and measure time in hours.
b. approximately when do the cars pass each other?
c. create linear equations representing each car’s distance in terms of time (in hours). note that you will need four equations for car 1 and only one for car 2. use these equations to find the exact coordinates of when the cars meet.
Answers: 3
Mathematics, 21.06.2019 18:00
Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer
Answers: 1
Mathematics, 21.06.2019 18:10
What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23
Answers: 1
Mathematics, 21.06.2019 18:40
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
Answers: 1
Suppose two cars are travelling north along a road. car 1 travels at a constant speed of 50 mph for...
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