anonymous
  • anonymous
The temperature of a chemical reaction ranges between 20°C and 160°C. The temperature is at its lowest point when t = 0, and the reaction completes one cycle over an eight-hour period. What is a cosine function that would model this reaction?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
A. f(t) = -90 cos pi over 4t + 70 B. f(t) = -70 cos pi over 4t + 90 C. f(t) = 70 cos 8t + 90 D. f(t) = 90 cos 8t + 70
anonymous
  • anonymous
I'm thinking it's C because I believe that the constant is 70?
anonymous
  • anonymous
@ParthKohli @wade123

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anonymous
  • anonymous
@zoomiemoo
anonymous
  • anonymous
Okay it wasn't C
anonymous
  • anonymous
sorry @twinkle12377 Im not very good as trig I am better with algebra
anonymous
  • anonymous
I can usually help with calculus as well
anonymous
  • anonymous
personally I would graph the functions and choose the one the is 20 at 0 and 160 at 8
anonymous
  • anonymous
ohhh okay thank you so much! :) @zoomiemoo

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