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ivanzaharov [21]
3 years ago
15

Suppose the half-life of a certain radioactive substance is 12 days. Find the time when there will be 20% of the initial substan

ce remaining. Assume you have 1 gram of the original substance.
pls help, it due today
Mathematics
1 answer:
vazorg [7]3 years ago
7 0

Answer: 2.4% I think

12 x 20 / 100 = 2.4%

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(1 point)
marusya05 [52]

Answer:

The correct answer is: {2,4,6,8}

Step-by-step explanation:

Given sets are:

P = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9) and V= {2, 4, 6, 8, 10, 12, 14, 16, 18, 20)

We have to find

P∩V

The symbol is used for intersection of two sets. In intersection, only common elements of both sets are written in result.

So,

P∩V = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9) ∩ {2, 4, 6, 8, 10, 12, 14, 16, 18, 20)

P∩V = {2,4,6,8}

Hence,

The correct answer is: {2,4,6,8}

7 0
3 years ago
Help again please 33 points
poizon [28]
The answer is 56.



Firstly you have to multiply the 2 numbers together, which would be the places of b and h. This would give you 112.

Then, divide 112 by 2 to give you a final answer of 56.
3 0
2 years ago
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podryga [215]
The top left and bottom left
5 0
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How many different ways are there to arrange the letters A, B, A, and B?
stira [4]
16 times
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8 0
3 years ago
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Which set of three side lengths will NOT form a triangle?
horrorfan [7]
B. 25, 38, 13 
These 3 will not form a triangle because the sum of the shorter sides must be greater than the longest side.
25 + 13 = 38 which is not greater than 38
6 0
3 years ago
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