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Ulleksa [173]
3 years ago
5

The surface area "S" of a sphere of radius ris given by the forma

Mathematics
1 answer:
Snezhnost [94]3 years ago
3 0
The answer is 314.16
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The secretary in Exercises 2.121 and 3.16 was given n computer passwords and tries the passwords at random. Exactly one of the p
Vlada [557]

Answer:

There is a \frac{(n-1)^{5}}{n^{6}} probability that the correct password is found on the sixth try.

Step-by-step explanation:

We have n passwords, only 1 is correct.

So,

Since a password is put back with other, at each try, we have that:

The probability that a password is correct is \frac{1}{n}

The probability that a password is incorrect is \frac{n-1}{n}.

There are 6 tries.

We want the first five to be wrong. So each one of the first five tries has a probability of \frac{n-1}{n}. So, for the first five tries, the probability of getting the desired outcome is \frac{(n-1)^{5}}{n^{5}}.

We want to get it right at the sixth try. The probability of sixth try being correct is \frac{1}{n}.

So, the probability that the first five tries are wrong AND the sixth is correct is:

P = \frac{(n-1)^{5}}{n^{5}}\frac{1}{n} = \frac{(n-1)^{5}}{n^{6}}

There is a \frac{(n-1)^{5}}{n^{6}} probability that the correct password is found on the sixth try.

5 0
3 years ago
You score a 95% on your math quiz. The quiz was out of 60 points. How many points did you get​
Vladimir [108]

Answer:

57

Step-by-step explanation:

95% of 60 is 57.

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2 years ago
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What is the value of x?
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Answer:

Solution given:

sin 47=opposite/hypotenuse

Sin 47=x/18

x=sin47*18

<u>x=13.16ft</u>

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Choose the name of the linear equations form given:
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None of the above. The first two are slope-intercept, whereas the third one isn't a form.
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Find the equivalent expression using the same basses (61*31)^8
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Answer:

52026353283901

Step-by-step explanation:


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