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AriannasMommy2010

Needing some math help!

  • one year ago
  • one year ago

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  1. AriannasMommy2010
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    Life Expectancy: The number of years a person in the united states is expected to live can be approximated by the equation y=0.189x=70.8,where x is the number of years since 1970.solve this equation for x. use this new equation to determine in which year the approximate life expectancy will be 80.2 years.

    • one year ago
  2. mathstudent55
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    What's supposed to be between 0.189x and 70.8? Is it a + sign?

    • one year ago
  3. AriannasMommy2010
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    yes

    • one year ago
  4. AriannasMommy2010
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    sorry

    • one year ago
  5. mathstudent55
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    |dw:1359704366354:dw|

    • one year ago
  6. AriannasMommy2010
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    thank you!

    • one year ago
  7. AriannasMommy2010
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    i have one more ?

    • one year ago
  8. mathstudent55
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    wlcm

    • one year ago
  9. AriannasMommy2010
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    Some doctors use the formula ND=1.08T to relate the variables N (the number of patient appointments the doctor schedules in one day), D (the duration of each patient appointment), and T(the total number of minutes the doctor can use to see patients in one day). Solve the formula for N. Use this result to find the number of patient appointments N a doctor should make if she has 6 hours available for patients and each appointment is 15 minutes long. ( Round your answer to the nearest whole number).

    • one year ago
  10. AriannasMommy2010
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    Some doctors use the formula ND=1.08T to relate the variables N (the number of patient appointments the doctor schedules in one day), D (the duration of each patient appointment), and T(the total number of minutes the doctor can use to see patients in one day). A. )Solve the formula for N. B.)Use this result to find the number of patient appointments N a doctor should make if she has 6 hours available for patients and each appointment is 15 minutes long. ( Round your answer to the nearest whole number).

    • one year ago
  11. mathstudent55
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    A. To solve for N, just divide both sides by D

    • one year ago
  12. AriannasMommy2010
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    im not sure how to work it out :/ i suck at math

    • one year ago
  13. mathstudent55
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    |dw:1359704669611:dw|

    • one year ago
  14. mathstudent55
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    For part B., you need to use T = 6 hours, but you must convert this to minutes. D = 15

    • one year ago
  15. AriannasMommy2010
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    is that the answer

    • one year ago
  16. AriannasMommy2010
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    ?

    • one year ago
  17. mathstudent55
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    |dw:1359705223064:dw|

    • one year ago
  18. AriannasMommy2010
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    I have another question

    • one year ago
  19. AriannasMommy2010
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    whats the second part to this: The number of years a person in the united states is expected to live can be approximated by the equation y=0.189x+70.8,where x is the number of years since 1970.solve this equation for x. use this new equation to determine in which year the approximate life expectancy will be 80.2 years.

    • one year ago
  20. AriannasMommy2010
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    this is what i have already y=0.189x+70.8 Subtract 70.80 from both sides y- 70.8=0.189x Divide both sides by 0.189x y-70.8/0.189=x

    • one year ago
  21. AriannasMommy2010
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    ?

    • one year ago
  22. mathstudent55
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    |dw:1359727243092:dw|

    • one year ago
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