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Tamiku [17]
2 years ago
14

Find the sum: 11 + 15 + 19 + .......+ 83

Mathematics
1 answer:
bonufazy [111]2 years ago
6 0

Answer: i dunno what '.......' was suppose to mean but 11 + 15 + 19 + 83 = 128

Step-by-step explanation: b more specific dood -_-

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The half-life of iron-52 is approximately 8.3 hours.How much of a 13 gram sample of iron-52 would remain after 8 hours? Round to
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6.665 grams of the 13 grams remain after 8 hours.

<h3>How much of a 13 gram sample of iron-52 would remain after 8 hours?</h3>

The decay equation for the 13 grams of iron-52 is:

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Where N is the amount of iron-52, and t is the time in years.

Where we used the fact that the half-life is exactly 8.3 hours.

Now, the amount that is left is given by N(8h), so we just need to replace the variable t by by 8 hours, so we get:

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So 6.665 grams of the 13 grams remain after 8 hours.

If you want to learn more about half-life:

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1 year ago
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You would half to take 8×(8×pi r squared)
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Convert 1111+102 into quinary number​
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