anonymous
  • anonymous
Needing some math help!
Mathematics
jamiebookeater
  • jamiebookeater
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jamiebookeater
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anonymous
  • anonymous
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.
mathstudent55
  • mathstudent55
What's supposed to be between 0.189x and 70.8? Is it a + sign?
anonymous
  • anonymous
yes

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anonymous
  • anonymous
sorry
mathstudent55
  • mathstudent55
|dw:1359704366354:dw|
anonymous
  • anonymous
thank you!
anonymous
  • anonymous
i have one more ?
mathstudent55
  • mathstudent55
wlcm
anonymous
  • anonymous
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).
anonymous
  • anonymous
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).
mathstudent55
  • mathstudent55
A. To solve for N, just divide both sides by D
anonymous
  • anonymous
im not sure how to work it out :/ i suck at math
mathstudent55
  • mathstudent55
|dw:1359704669611:dw|
mathstudent55
  • mathstudent55
For part B., you need to use T = 6 hours, but you must convert this to minutes. D = 15
anonymous
  • anonymous
is that the answer
anonymous
  • anonymous
?
mathstudent55
  • mathstudent55
|dw:1359705223064:dw|
anonymous
  • anonymous
I have another question
anonymous
  • anonymous
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.
anonymous
  • anonymous
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
anonymous
  • anonymous
?
mathstudent55
  • mathstudent55
|dw:1359727243092:dw|

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