A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
Starting from 1.5 miles away, a car drives toward 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 = 1.5 – 53t. At what times is the car 0.1 miles from the checkpoint? Calculate your answer in seconds.
 2 years ago
Starting from 1.5 miles away, a car drives toward 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 = 1.5 – 53t. At what times is the car 0.1 miles from the checkpoint? Calculate your answer in seconds.

This Question is Closed

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Make it into an equation. How many solutions do you expect to have?

sirryan1
 2 years ago
Best ResponseYou've already chosen the best response.095.1s and 108.7s 10.2s and 101.9s 108.7s and 10.2s 95.1s and 10.2s

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Okay, it's multiple choice, so I guess the answers gave away my second question. I was asking *you*. Have you written out an equation?

sirryan1
 2 years ago
Best ResponseYou've already chosen the best response.0@kelly226 can you help?

kelly226
 2 years ago
Best ResponseYou've already chosen the best response.0d=1.5−53t where d is in miles and t is in hours. first divide both sides by 53 to get: d53=1.553−t this can be split into two portions: (1) for t <= 1.5/53 hours we can write: d53=1.553−t t=1.5−d53 (2) for t > 1.5/53 hours we can write: d53=−(1.553−t)=t−1.553 t=1.5+d53

geoffb
 2 years ago
Best ResponseYou've already chosen the best response.1Of course you don't. You haven't written out an equation yourself. It makes perfect sense that you don't understand it.
Ask your own question
Ask a QuestionFind 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.