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Contact [7]
3 years ago
15

Find the time required for an object to cool from 280°F to 220°F by evaluating the following where t is time in minutes. (Round

your answer to four decimal places.) *280 t= 10 In 2 1 dT T – 100 min​

Mathematics
1 answer:
blsea [12.9K]3 years ago
4 0

9514 1404 393

Answer:

  5.8496 min

Step-by-step explanation:

  \displaystyle t=\frac{10}{\ln{2}}\int_{220}^{280}{\frac{1}{T-100}}\,dT=\frac{10(\ln{(280-100)}-\ln{(220-100)})}{\ln{2}}=\frac{10\ln{(3/2)}}{\ln{2}}\\\\\boxed{t\approx5.8496\quad\text{min}}

__

Modern calculators can perform integration with high accuracy. This one gives the same result.

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taurus [48]

Answer: 30 students per bus

Step-by-step explanation: 99-9=90

90/3=30

30 students per bus

8 0
4 years ago
How many different four-digit numbers can be made using the digits 1, 2, 3, 4, 5, 6 if no digit can be used more than once?
Alexandra [31]
In the first digit, there are 6 possibilities. In the second, there are 5, because you can't use the digit you used before. In the third, there are 4, and in the fourth, there are 3. So, 

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5 0
3 years ago
What is the measure of angle TMS? Pls explain your answer and I will mark brainliest!
Rudik [331]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Divide fractions 1/2 divided by 1/6
SVEN [57.7K]
1/2 divided by 1/6 is 3

use KCF strategy

1/2 x 6/1=3

1x6=6

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6/2=3
4 0
3 years ago
A Scientist had a bottle that contains 56.6 mL of solution.She used 3.2 mL of the solution for an experiment.She poured half of
mario62 [17]
56.6 - 3.2 = 53.4
53.4 / 2 = 26.7
26.7 - 6 = 20.7ml
For the final answer she has 20.7ml of solution left.

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7 0
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