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Vedmedyk [2.9K]
3 years ago
8

A sample contains 400 Plutonium-244 atoms. After 1 half-life(s) how many plutonium atoms are left on average?

Mathematics
1 answer:
SpyIntel [72]3 years ago
8 0

Answer:

200

Step-by-step explanation:

Divide 400 by 1/2 or 2.

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<u><em>Answer:</em></u>

24.2%

<u><em>Explanation:</em></u>

<u>The percentage of people choosing strawberry can be calculated as follows:</u>

Percentage = \frac{PeopleChoosingStrawberry}{TotalNumberOfSurveyedPeople} * 100

<u>We have:</u>

Number of people choosing strawberry = 15 people

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<u>Substitute in the above rule to get the percentage as follows:</u>

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Hope this helps :)

3 0
3 years ago
There are 4 different math courses, 5 different science courses, and 2 different history courses. If a student must take one of
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A student can take three subjects in 40 ways.

<u>SOLUTION:</u>

Given that, there are 4 different math courses, 5 different science courses, and 2 different history courses.

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Now, number ways to take math course = 4

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Number of ways to take history course = 2

So, now, total possible ways = product of possible ways for each course = 4 x 5 x 2 = 40 ways.

Hence, a student can take three subjects in 40 ways.

6 0
3 years ago
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Answer:

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Step-by-step explanation:

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