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denis23 [38]
3 years ago
7

A radioactive substance has a decay rate of 2.3% per year. What is its half life? Give your answer correct to 2 decimal places.

Mathematics
1 answer:
tatiyna3 years ago
8 0
Please send a message me a picture of the problem and I think it is .023
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The numbers 24, 22, 34, 28, 29, 24, 25 29, a and b have a median of 27 and a mode of 29. Given that a
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Answer: Median is 26,5 and modes are 24 and 29

Step-by-step explanation: In increasing order numbers are

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8 0
3 years ago
The amount of carbon-14 in an object is given by y = ae– 0.00012t where a is the initial amount of carbon and t is the age in ye
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Answer:

The approximate age of the bone is approximately 11552 years.

Step-by-step explanation:

The current proportion of carbon-14 with respect to its original amount is defined by following formula:

\frac{y}{a} = e^{-0.00012\cdot t} (1)

Where:

y - Current amount of carbon-14, no unit.

a - Initial amount of carbon-14, no unit.

t - Time, in years.

If we know that \frac{y}{a} = 0.25, then the approximate age of the bone is:

t = -8333.333\cdot \ln \frac{y}{a}

t\approx 11552.453\,yr

The approximate age of the bone is approximately 11552 years.

4 0
3 years ago
Which expression is equivalent to the given expression?
RoseWind [281]

Answer:

A

Step-by-step explanation:

yes it is A

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Step-by-step explanation:

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Julio has 1000 square ft of living space. The n he added a room that was 20 ft by 10 ft. What was the percentage increase of liv
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