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vitfil [10]
3 years ago
5

Steve rides his bike at a rate of 1760 feet per minute. What is his rate in miles per hour?

Mathematics
1 answer:
raketka [301]3 years ago
4 0

Answer:

<h2>The answer is  19.36 miles per hours</h2>

Step-by-step explanation:

this problem is a unit conversion problem

In this problem, we are expected to convert from feet/min to miles per hour

given that the rate is 1760 feet per minute

from tables, we are given that

1 foot per minute is  0.011 miles per hour hence

1760 feet per minutes will give x miles per hour

cross multiplying we have

x= 1760*0.011

x= 19.36 miles per hours

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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:

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If you want to learn more about exponential decays:

brainly.com/question/11464095

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2 years ago
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8 0
3 years ago
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It usually took josh 2/5 of an hour to ride his bike to work. But on Monday, his bike was broken, so he took the bus to work whi
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Answer: taking the bus to work takes 13 minutes longer.

Step-by-step explanation:

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But on Monday, his bike was broken, so he took the bus to work which took 5/8 of an hour. This means that the amount of time that it took Josh spent on the bus to work is

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3 years ago
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