A community for students.
Here's the question you clicked on:
 0 viewing
MeowLover17
 one year ago
Part A: What does the xintercept of the function for car 1 represent? (2 points)
Part B: What does the yintercept of the function for car 2 represent? (2 points)
Part C: What is the domain of the functions for car 1 and car 2? (2 points)
Part D: What is the average rate of change from x = 20 to x = 30 for the function representing the motion for car 2? What does the value of this average rate of change represent? (4 points)
MeowLover17
 one year ago
Part A: What does the xintercept of the function for car 1 represent? (2 points) Part B: What does the yintercept of the function for car 2 represent? (2 points) Part C: What is the domain of the functions for car 1 and car 2? (2 points) Part D: What is the average rate of change from x = 20 to x = 30 for the function representing the motion for car 2? What does the value of this average rate of change represent? (4 points)

This Question is Closed

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2A xintercept is the time 60 minutes he has taken to travel to his destination.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2B This represents the distance (60 km) away form the cars destination

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2C The domain is the values of the times ( what do you think the values are?)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2D: Hint at time = 20 car 2 is 40 miles for its destination at time = 30 it is 34 miles form its destination

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@welshfella I dont understand C nor D. could you please explain more?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So about c i dont understand what domain (x) values they want

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2The domain is the possible values of the horizontal (time) axis. From the diagram what do you think they are? Note that you have to consider both Car A and Car B together.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0[0,positive infinitey)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2oopps sorry I think they want a domain for Car A and another for Car B.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2Thats the correct domain for car B what about Car A?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0could you give me the domain for car b and i figure it out for car a?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got it so for A the domain would be [0,60)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2[0 , +INF) is domain for car B

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2yes thats right for A

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes as i said earlier so the domain for car A is [0,60)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2no 60 is INCLUDED in the Domain so it is [0,60]

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2square bracket after the 60

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay cool so for part C Part C: The domain for Car A would be [0,60) and for Car B the domain is [0,+INF)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh sorry i mean [0,60]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And you provided me with the answers for a and b right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So all i need is D please explain it cause i dont understand it what so ever

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2the average rate of change = average speed of Car 2 during the period 20 to 30 minutes

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2and this is (4034) / (3020) kms / minute

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@welshfella Could you provide me with the answer im hopeless

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2what is 40  34 ? and 30  20 ? i'm sure you can do that

anonymous
 one year ago
Best ResponseYou've already chosen the best response.04034= 6 and 3020 = 10

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what do i do with theese numbers?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2right so speed = 6 / 10 = 0.6 kms/minute

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry i didnt provide you with this char Time (in minutes) x 0 10 20 30 40 50 60 Car 1 (in km) y 60 50 40 30 20 10 0 Car 2 (in km) y 60 49.02438 40.05648 32.72904 26.742 21.8502 17.85318

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Time (in minutes) x 0 10 20 30 40 50 60 Car 1 (in km) y 60 50 40 30 20 10 0 Car 2 (in km) y 60 49.02438 40.05648 32.72904 26.742 21.8502 17.85318

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2this value represents the car's average speed between times 20 and 30 minutes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I hope this chart does not change our answers

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So my answer for Part D would be Part D: The average rate of change is speed = 6 / 10 = 0.6 kms/minute, and this represents the car's average speed between times 20 and 30 minutes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@welshfella Is that right

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2the speed of car B will be different as i just read the values off the graph

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh okay so my second part of the answer is right but now i need to figure out the speed using the chart?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2speed = (40.05648  32.72904) / 10

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So .732744 my average rate of change??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so my Anser for part D is

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The average rate of change is 0.732744 kms/minutes and this represents the car's average speed between times 20 and 30 minutes.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thanks for your help
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.