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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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3 years ago
Mr. Nero drives to work each day 35 miles one way. If he were in a hurry, could he legally make it to work in less than a half h
snow_lady [41]

Answer:

Nope.  It would take 32 and 4/13 minutes, which is longer than 30 min.

Step-by-step explanation:

The distance is 35 miles and the speed 65 miles/hour

Dividie the distance by the speed to obtian the time required,

(35 miles)/(65 miles/hour) = 0.538 hours

No, 35 miles at the speed limit of 65 mph would require 0.538 hours, 0.038 hours more than 1/2 hour.  2 and 4/13 minutes more than 30 minutes.

8 0
1 year ago
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Anit [1.1K]

18.84

Step-by-step explanation:

divide 12 by 2 which is 6 then times that by 3.14

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4 years ago
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Jobisdone [24]

Answer:

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5 0
3 years ago
Aiden's bill for lunch at a restaurant is $14.50, and he wants to leave a 18% tip.
zhannawk [14.2K]

Answer:

Tip: $2.61

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Add the tip to the original bill, that's the total.

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