anonymous
  • anonymous
Medal to best help that allows me to find the answer. Carl can paint a room 3 hours faster than Jennifer can. If they work together, they can complete the job in 2 hours. Using complete sentences, explain each step in figuring out how to determine the time it would take Jennifer to complete this job on her own.
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
how do I set my equation up to solve this?
anonymous
  • anonymous
This is my last question, then I'll be done for the day. I just need help on this one!
anonymous
  • anonymous
@DariusX @Vocaloid @phi @Hero @tom982

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More answers

mathstudent55
  • mathstudent55
Jennifer can paint the room in x hours. Carl can paint the room in x - 3 hours. In 1 hour, Jennifer does 1/x of the job. In 1 hour, Carl does 1/(x - 3) of the job. If they work together for 1 hour, they do 1/x + 1/(x - 3) of the job. Together, they take 2 hours to complete the job. That means in 1 hour, they do 1/2 of the job. That means that 1/x + 1/(x - 3) = 1/2
mathstudent55
  • mathstudent55
Solve for x to find how many hours Jennifer needs. Then subtract 3 hours to find Carl's hours.
anonymous
  • anonymous
how do I solve for x? @mathstudent55
anonymous
  • anonymous
anyone?
anonymous
  • anonymous
@DariusX
anonymous
  • anonymous
how do i solve for x?
anonymous
  • anonymous
i keep getting 4
DariusX
  • DariusX
|dw:1449528891446:dw|
DariusX
  • DariusX
x = 1 is a bad solution in this case because both of them would do the job in 2 hours and it's illogical that Jennifer would be able to do it alone in 1 hour. So the answer is 6. It would take 6 hours for Jennifer and 3 hours for Carl.
anonymous
  • anonymous
what did you write under x^2 - 7x + 6?
anonymous
  • anonymous
@DariusX
DariusX
  • DariusX
D = 5^2 it's a districiminant you use it for solving quadratic equations
anonymous
  • anonymous
okay. thanks for helping.

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