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anonymous

  • 4 years ago

If gas costs $3.65 per gallon at a local service station, how many cubic feet of gas can a customer buy with $40 ?

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  1. precal
    • 4 years ago
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    40/3.65=10.95 gallons

  2. anonymous
    • 4 years ago
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    how far can the customer drive if the car gets 4 miles per cubic foot of gas?

  3. precal
    • 4 years ago
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    4 miles per gallon??? Horrible mileage.....

  4. anonymous
    • 4 years ago
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    the first answer was rejected, the 10.95

  5. anonymous
    • 4 years ago
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    they want the answer in ft^3, i guess

  6. precal
    • 4 years ago
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    weird.... I was just thinking of it like in the real world. I have $40 dollars and I can only by approx 10.9 gallons at 3.65 maybe you need to input it as 10.9 (do you have instructions on what place to round to?)

  7. anonymous
    • 4 years ago
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    no.

  8. anonymous
    • 4 years ago
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    well can you help me with 4 other questions please

  9. anonymous
    • 4 years ago
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    i have this The compound interest formula is F = P(1 + i)^n where F is the total amount due, P is the initial cost or amount of money, i is the interest rate, and n is the number of periods interest is computed. A student purchases a $1300 laptop computer for school. The deal does not require payment until 2 years later. If interest is computed monthly, how much does the student have to pay at the end of 2 years? The monthly interest rate is 1.8 percent.

  10. precal
    • 4 years ago
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    ok I will try, what do you have?

  11. precal
    • 4 years ago
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    P=1300 i=.018 n = 12 because it is monthly but n = 24 because of 2 years F=1300(1+.018)^24 compute F

  12. anonymous
    • 4 years ago
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    did you get 1994?

  13. precal
    • 4 years ago
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    and 76 cents

  14. precal
    • 4 years ago
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    That would be a bad deal, that means that person is willing to pay 694.76 to borrow 1300

  15. precal
    • 4 years ago
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    yes 1994.76

  16. anonymous
    • 4 years ago
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    my damn software rejected the answer

  17. precal
    • 4 years ago
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    I still think the directions somewhere has to say how to input the solutions. Decimals are tricky. I am given you real world solutions but if the instructions are to round to the nearest whole number 1995 would be the only accepted answer.

  18. anonymous
    • 4 years ago
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    ok what about this one A copper pipe, used for plumbing from the water main to a house, is 5 meters long and has a circular cross-section 3.2 cm in diameter. There is a 2.4 cm diameter hole in the center of the cross-section for the entire length of the rod. What is the volume of copper in the rod in cubic inches?

  19. precal
    • 4 years ago
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    were you given a picture? Upload it by attaching the file.

  20. anonymous
    • 4 years ago
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    1 Attachment
  21. anonymous
    • 4 years ago
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    yea theres the picture for the last problem

  22. precal
    • 4 years ago
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    V=Bh B is a circle so B is pi(r^2) \[V=\pi r^2h\]

  23. anonymous
    • 4 years ago
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    so v=pi(5^2)(3.2)?

  24. precal
    • 4 years ago
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    picture stated 1 gallon = 231 cubic inch we sort of needed that info earlier

  25. anonymous
    • 4 years ago
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    oh sorry

  26. precal
    • 4 years ago
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    |dw:1328667396808:dw|

  27. precal
    • 4 years ago
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    original solution is 10.95*231=2529.45 cubic inches

  28. precal
    • 4 years ago
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    |dw:1328667597151:dw| I think you will have a circle within a circle, but you should not be using diameter. Take half of the diameter and that is your radius

  29. anonymous
    • 4 years ago
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    3.2/2=1.6, is that right

  30. precal
    • 4 years ago
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    yes if d=3.2 then r = 1.6

  31. anonymous
    • 4 years ago
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    so is h the 2.4?

  32. precal
    • 4 years ago
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    no 5 is the height (it you stand the pipe up you will see that it is 5)

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