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Sergio [31]
3 years ago
6

Can someone please help me .. will mark brainliest !

Mathematics
1 answer:
aleksley [76]3 years ago
8 0

Answer:

Yes, and D i believe!

Step-by-step explanation:

hoped this helped!

-B

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Using Newton's Law of Cooling. You are a medical examiner called to an abandoned house in which a dead body has been discovered.
Artyom0805 [142]
A) The differential equation comes from the fact that the rate of temperature change is proportional to the difference in temperatures.
\frac{dT}{dt} = \alpha(T -52)

B) Find general solution by separating variables and integrating\int\frac{dT}{T-52} = \alpha \int dt   \\  ln (T-52) = \alpha t + C  \\  T = C e^{\alpha t} +52:


C) Initial condition is t=0, T = 87
87 = C +52 \\  C = 35

D) Total time elapsed is 10 minutes, new temperature is 84
84 = 35 e^{10\alpha} +52
solve for alpha
e^{10\alpha} =\frac{32}{35}  \\  \alpha = \frac{ln(32/35)}{10} \\  \alpha = -.00896

E) Temperature function is:
T = 35 e^{-.00896 t} +52
solving for t
t = \frac{ln (\frac{T-52}{35})}{-.00896}
Plug in T = 98.6
t = -31.95

This is approximately 32 minutes before he arrived or about 1:20 AM
3 0
3 years ago
Do yall eat a...... s..... s......
guapka [62]
No. and i will keep it like that
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Helppp Plsss Asap!!! Thanks​
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Answer:

3

Step-by-step explanation:

The average rate of change is

f(x2) - f(x1)

-----------------

x2-x1

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f(3) = 8

f(1) = 2

f(3) - f(1)            8-2             6

----------------- = ------------ = ---- = 3

3-1                        2             2

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The answer is 7/10.  Because it's 7 out of 10.
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Step-by-step explanation:

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