A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
A truck has a minimum speed of 15 mph in high gear. When traveling x mph, the truck burns diesel fuel at the rate of
0.0110469 ( 1156/x + x) gal/mile.
Assuming that the truck can not be driven over 54 mph and that diesel fuel costs $1.21 a gallon, find the steady speed that will minimize the total cost of the trip if the driver is paid $20 an hour.
anonymous
 5 years ago
A truck has a minimum speed of 15 mph in high gear. When traveling x mph, the truck burns diesel fuel at the rate of 0.0110469 ( 1156/x + x) gal/mile. Assuming that the truck can not be driven over 54 mph and that diesel fuel costs $1.21 a gallon, find the steady speed that will minimize the total cost of the trip if the driver is paid $20 an hour.

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\delta y/\delta x (0.0110459 (1156/x+x)=0\] the derivative is \[0.01101459(1156/x^2+1)\] then you just solve for x, which it would be 34 mpg

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that was the answer of another part of this question, which is : The steady speed that will minimize the cost of the fuel for a 620 mile trip

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh srry, didnt see the other one

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that should be the right answer though, because it consumes the least about of gasoline
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.