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Mathematics

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masya89 [10]3 years ago

3 0

Answer:

the bacteria population increases at a constant rate

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True or False? If a radius of a circle intersects a chord, it is perpendicular to that chord.

kifflom [539]

If a radius of a circle intersects a chord, it would be unlikely for it to be perpendicular to that chord, so your answer choice for this question should be false.

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Find the missing number according to the associative property (20×5)×11= 20×(11×______)

Ede4ka [16]

5 is the missing number according to the associative property is the final answer.

$(20*5)=100$

$100*11=1100$

$(20*5)*11=20(11*5)$

Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

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The seismic activity density of a region is the ratio of the number of earthquakes during a given time span to the land area aff

vlada-n [284]

It is given that seismic activity density of a region is the ratio of the number of earthquakes during a given time span to the land area affected. so if the there 424 earthquakes and the land area is 71,300 sq miles.

seismic activity density = 424 / 71,300

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A Geiger counter counts the number of alpha particles from radioactive material. Over a long period of time, an average of 14 pa

UkoKoshka [18]

Answer:

0.2081 = 20.81% probability that at least one particle arrives in a particular one second period.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

Over a long period of time, an average of 14 particles per minute occurs. Assume the arrival of particles at the counter follows a Poisson distribution. Find the probability that at least one particle arrives in a particular one second period.

Each minute has 60 seconds, so $\mu = \frac{14}{60} = 0.2333$