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Digiron [165]
3 years ago
13

Need Help with finding half life or doubling time

Mathematics
1 answer:
adell [148]3 years ago
8 0

Answer:

12.2 hours

Step-by-step explanation:

You want to find t such that y = 2·y₀. That is, you want to solve

... 2y₀ = y₀·e^(0.0567t)

Dividing by y₀, you have

... 2 = e^(0.0567t)

and taking the natural log gives ..

... ln(2) = 0.0567t

... ln(2)/0.0567 = t ≈ 12.2248 . . . . divide by the coefficient of t

The doubling time is approximately 12.2 hours.

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Suppose you are determining the growth rate of two species of plants. Species A is 25 cm tall and grows 3 cm per month. Species
jarptica [38.1K]
If the growth rate is a constant, we can model it using a linear equation:

y = b + ax

where b = initial value, a = growth rate.
In this case, x = m = number of months.

Let's find the equation for the growth of each species.

Species A:
Initial height = b = 25 cm
Growth rate = a = 3 cm per month
So its height can be modeled by H(m) = 25 + 3m

Species B:
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So its height can be modeled by H(m) = 10 + 8m

Thus the answer is A: H(m) = 25 + 3m and B: H(m) = 10 + 8m.
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3 years ago
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When -3v = -18 is solved, the result is:
rjkz [21]

Answer:

When -3v = -18 is solved, the result is:

21v

4 0
2 years ago
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A bottle of medicine contains 40 doses. How many doses are in 3 1/3 bottles?
sdas [7]
Hi there! So, there are 40 doses in 1 bottle. To find out the number of doses in 3 1/3 bottles, we have to multiply both numbers together. 3 1/3 as an improper faction is 10/3. 40/1 * 10/3 is 400/3 or 133 1/3 in simplest form. There are 133 1/3 doses of medicine in 3 1/3 bottles.
7 0
3 years ago
Mental Math
Dimas [21]

Answer:

288 I think

Step-by-step explanation:

24 hours each month. Each year has 12 months so 24x12=288

4 0
3 years ago
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a bike race is 6 miles long by noon tammy had ridden 3/4 of the distance. at this rate how long will it take her to finish the r
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The time taken to complete 6 miles = 6 ÷ 1.125 = 16/3 hours = 5.3 hours


4 0
2 years ago
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