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Sonja [21]
3 years ago
6

Geometry math question

Mathematics
2 answers:
aliina [53]3 years ago
8 0

By similar triangles ( triangles AFE and ADB are similar)

BD = 1/2 * FE so BD = 11.75 answer

KIM [24]3 years ago
5 0

By similar triangles ( triangles AFE and ADB are similar)

BD = 1/2 * FE so BD = 11.75 answer

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Answer:

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Step-by-step explanation:

From the question we are told that

    The temperature of the coffee after time t is   T(t) =  25 + 72 e^{[-\frac{t}{45} ]}

Now the average temperature during the first 22 minutes i.e fro 0 \to  22minutes is mathematically evaluated as

              T_{a} =  \frac{1}{22-0}  \int\limits^{22}_{0} {25 +72 e^{[-\frac{t}{45} ]}} \, dx

               T_{a} = \frac{1}{22} [25 t  +  72 [\frac{e^{[-\frac{t}{45} ]}}{-\frac{1}{45} } ] ] \left| 22} \atop {0}} \right.

             T_{a} = \frac{1}{22} [25 t  - 3240e^{[-\frac{t}{45} ]} ] \left | 45} \atop {{0}} \right.

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            T_{a} = \frac{1}{22} [550  - 1987.12  +  3240]

          T_{a} = 81.95^oC

       

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Step-by-step explanation:

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Source - TutorEye

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Step-by-step explanation:

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