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ArbitrLikvidat [17]
2 years ago
8

5. The half-life of Po-210 is 140 days. If the initial mass of the sample is 5

Mathematics
1 answer:
Anit [1.1K]2 years ago
6 0

Answer:

1.25kg

Step-by-step explanation:

useing the problem the half life equation will be:

f(x)=5(0.5)^(x/140)

x is amount of days

so plugging in 280 for x will get 1.25kg

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a long board 4.7 thick is cut into three pieces of equal length these three pieces are then stacked the stack is cut in three eq
nalin [4]

The number of pieces per stack after 3 cuts represented by a power expression can be written as 3^{3}

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  • The number of cuts made = 3

<u>Using a power </u><u>expression</u><u> </u><u>:</u>

  • The number of of equal pieces per cut is raised to a power which represents the number of cuts made

  • Thus we have number\: of \:equal\: pieces^{number\: of \:cuts}

  • After 1 cut ; 3^{1} = 3
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Therefore, the Number of pieces present in stack after 3 cuts is 3^{3}

Learn more :brainly.com/question/18796573

5 0
2 years ago
Please help with number 3 i dont understand it
prisoha [69]
I believe the answer is A.

Absolute value best proves my answer.

Absolute value is how far a number is from zero.
6 0
3 years ago
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Katena32 [7]
Ummm maybe it’s 60????
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3 years ago
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Answer:

Step-by-step explanation:

x = 150

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