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liberstina [14]
3 years ago
14

Alguien me ayuda es para mañana

Mathematics
1 answer:
mihalych1998 [28]3 years ago
3 0

Answer:

Alguien me ayuda es para mañana

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A drug used to relieve anxiety and nervousness has a half-life of 16 hours. if a doctor prescribes one 2.8-milligram every 24 ho
dlinn [17]

After 24 hours, 35.4% of the initial dosage remains on the body.

<h3>What percentage of the last dosage remains?</h3>

The exponential decay is written as:

f(x) = A*e^{-k*x}

Where A is the initial value, in this case 2.8mg.

k is the constant of decay, given by the logarithm of 2 over the half life, in this case, is:

k = ln(2)/16h

Replacing all that in the above formula, and evaluating in x = 24 hours we get:

f(24h) = 2.8mg*e^{-24h*ln(2)/16h} = 0.9899 mg

The percentage of the initial dosage that remains is:

P = \frac{0.9899mg}{2.8mg}*100\% = 35.4\%

If you want to learn more about exponential decays:

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2 years ago
Which equations are equivalent to the expressions below
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If you're looking for equivalents to 3^x, choices

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3 years ago
All I need are four equations of perpendicular lines that is all
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Answer:

m = −1−4 = 14.

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Select the correct answer.
algol [13]

Answer:

its answer C. y=-8

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If a data value in a normal distribution has a negative z-score, which of the following must be true?
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<span>The data value must be less than the mean.</span>
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4 years ago
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