anonymous
  • anonymous
Help with functions?
Mathematics
  • 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
@ganeshie8 @uri
anonymous
  • anonymous
The temperature of a chemical reaction ranges between 30°C and 70°C. The temperature is at its lowest point when t = 0 and completes one cycle over a six-hour period. What is a sine function that would model this reaction?
anonymous
  • anonymous
@Preetha @SolomonZelman

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anonymous
  • anonymous
OH and here are the answers: f(t) = 20 sin 10t + 50 f(t) = 50 sin 10t + 20 f(t) = 50 sin π/5 t + 20 f(t) = 20 sin π/5 t + 50
xapproachesinfinity
  • xapproachesinfinity
oh you have answer choices good!
xapproachesinfinity
  • xapproachesinfinity
hmm i see the period has to be in radians
anonymous
  • anonymous
Yesss
xapproachesinfinity
  • xapproachesinfinity
i would of think that the lowest degree is 30 but they give you 20 as the lowest somehow!
xapproachesinfinity
  • xapproachesinfinity
so A and D are not good options since t=0 give 50 which is not lowest degree as claimed!
xapproachesinfinity
  • xapproachesinfinity
you would have to convert 6 hour into radions to see what is could be each hour is 2pi radians hmm but then this does not give us what we wanted 12pi is no good
anonymous
  • anonymous
Here's a sample problem similar to it, if that'll help.
anonymous
  • anonymous
@undeadknight26 @sleepyjess
anonymous
  • anonymous
@SolomonZelman
xapproachesinfinity
  • xapproachesinfinity
ok let's see at t=6 we have f(6)=70 50sin(6B)+20=70 sin(6b)=1 6b=pi/2 b=pi/12 didn't get that pi/5 there
anonymous
  • anonymous
Okay..

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