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Aloiza [94]
3 years ago
6

Brainly if correct free brainly if you ask me.

Mathematics
2 answers:
marta [7]3 years ago
8 0

x = 3/32

Option C is the right answer

dedylja [7]3 years ago
7 0

Answer:

yes I can confirm the answer is <em>c)</em>

Step-by-step explanation:

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Eight rooks are placed randomly on a chess board. What is the probability that none of the rooks can capture any of the other ro
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Answer:

9.11*10^-4 %

Step-by-step explanation:

To find the probability, you simply need to find the possible outcomes that allows no rooks to be in danger, and the possible amount of ways to place the rooks.

For the first outcome, you start by putting 1 rook in the first columns, you have 8 possible rows to do this. The next rook in the next column will only have 7 possible rows, as you have to exclude the one where the previous rook is located. The next rook, 6 possibilities, the next 5, and so on. So we conclude that the total amount of ways so that none of the rooks can capture any of the other rooks is 8*7*6*5*4*3*2*1 = 8! = 40320

In order to find the total amount of ways to place the rooks, you can just use a combinatoric:

\left[\begin{array}{ccc}64\\8\end{array}\right]= \frac{64!}{8!(64-8)!} = 4.43*10^9

Then:

P = \frac{40320}{4.43*10^9}*100\%=9.11*10^{-4}\%

5 0
3 years ago
Which of the following expressions is equal to -3x^2-27?
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Answer:

6

\sqrt{2}

3 0
3 years ago
To raise funds for uniforms and travel expenses, the soccer team is holding a car wash in a part of town with a lot of car and t
Harrizon [31]

Answer:

The need to wash 16 cars.

Step-by-step explanation:

If they charge $20 per truck and washed 15, it would be $300. So you subtract $460 from $300. That gives you $160. Then, you divide $160 from $10. That gives you 16.

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3 years ago
PLS Help me! This graph shows the outside temperature (in degrees Celsius) over the course of 12 hours, starting at midnight (x
viktelen [127]

Answer:

The domain is the set of all possible x-values

  • Domain is the time here

The range is the resulting y-values

  • The range is the outside temperature is here
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  • It means the temperature is decreasing between midnight and 3 AM

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3 years ago
Bryan's monthly Netflix subscription costs $10. If he charges it
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$50

Step-by-step explanation:

If he pays $10 every month, and he pays for 5 months, it would be 10 x 5, which means he would be $50 in debt.

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2 years ago
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