math

The cosat C, in dollars, of operating a concrete-cutting machine is modelled by C=2.2n^2-66n+655, where n is the number of minutes the machine is run. How long must trhe machine run for the operating cost to be at a minimum? What is the4 minimum cost?

  1. 👍 0
  2. 👎 0
  3. 👁 159
asked by ted

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    The cost "C" of operating a concrete-cutting machine is related to the number of minutes "n" the machine is run by the function: C(n)=2.2n⋀2-66n+655. For what number of minutes is the cost of running the machine a minimum? What

    asked by Anonymous on November 27, 2012
  2. math

    In Ali garden, he wants to build a concrete fountain. So he consults two different companies who provides concrete pours: Alibaba's Concrete (charges $700 plus $20/m^3 of concrete) and Baborina's Concrete ($1200 plus $15/m^3 of

    asked by doni on May 17, 2017
  3. English

    I can not find the name for the machine used for cutting documents for the purpose of security. Would you let me know the name of the machine?

    asked by rfvv on August 6, 2015
  4. introductory technology

    Question 1 1) state five operation that a vice can carry out 2)state the energy input and energy output of the following appliances a)electric iron b)electric kettle c)gas lamp d)ceiling fan e)radio set Question 2 1)list two

    asked by jolomi skinn on January 2, 2010
  5. finance

    Nucore Company is thinking of purchasing a new candy-wrapping machine at a cost of $370,000. The machine should save the company approximately $70,000 in operating costs per year over its estimated useful life of 10 years. The

    asked by neil on September 25, 2007
  6. Math, rates

    Which rates are equivalent? 6 U.S. dollars = 18 U.S. dollars 8 Canadian dollars 20 Canadian dollars 6 U.S. dollars = 9 U.S. dollars 8 Canadian dollars 12 Canadian Dollars 6 U.S. dollars = 9 U.S. dollars 8 Canadian dollars 16

    asked by carol on March 26, 2007
  7. Fundamentals of Contempary Management

    A firm has an opportunity to invest in a new device that will replace two of the firm's older machines. The new device costs 570,000 dollars and requires an additional outlay of 30,000 dollars to cover installation and shipping.

    asked by Anonymous on October 12, 2012
  8. maths

    The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin(pie t), where d is the horizontal distance (in cm)

    asked by katie on April 23, 2007
  9. maths

    The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in

    asked by k on April 23, 2007
  10. maths

    The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in

    asked by k on May 6, 2007

More Similar Questions