A community for students.
Here's the question you clicked on:
 0 viewing
 3 years ago
Starting from 1.5 miles away, a car drives towards a speed checkpoint and then passes it. The car travels at a constant rate of 53 miles per hour. The distance of the car from the checkpoint is given by d=l1.553tl . At what times is the car 0.1 miles from the checkpoint? Calculate your answer in seconds.
95.1s and 108.7s
10.2s and 101.9s
108.7s and 10.2s
95.1s and 10.2s
 3 years ago
Starting from 1.5 miles away, a car drives towards a speed checkpoint and then passes it. The car travels at a constant rate of 53 miles per hour. The distance of the car from the checkpoint is given by d=l1.553tl . At what times is the car 0.1 miles from the checkpoint? Calculate your answer in seconds. 95.1s and 108.7s 10.2s and 101.9s 108.7s and 10.2s 95.1s and 10.2s

This Question is Closed

asnaseer
 3 years ago
Best ResponseYou've already chosen the best response.6\[d=1.553t\]where d is in miles and t is in hours. first divide both sides by 53 to get:\[\frac{d}{53}=\frac{1.5}{53}t\]this can be split into two portions: (1) for t <= 1.5/53 hours we can write:\[\frac{d}{53}=\frac{1.5}{53}t\]\[t=\frac{1.5d}{53}\] (2) for t > 1.5/53 hours we can write:\[\frac{d}{53}=(\frac{1.5}{53}t)=t\frac{1.5}{53}\]\[t=\frac{1.5+d}{53}\] now just stick the value d=0.1 into (1) and (2) above to get your answer (remember to multiply the answers you get by 3600 to convert hours to seconds).
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.