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NeTakaya
3 years ago
9

Find the area of the sector formed by a central angle of 45 degrees in a circle of radius 2.1

Mathematics
1 answer:
Eva8 [605]3 years ago
4 0

Answer:

1.731 meters squared

Step-by-step explanation:

Look at the image for reasoning

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10 cups of sugar are required in order to make cookies

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The probability that Roberto throws a baseball in the strike zone on one pitch is 0.72. Roberto throws a baseball 3 times in a r
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I actually just finished this assignment: 
<span>
These are binomials with n = 3 and p = 0.72</span>

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One day, eleven babies are born at a hospital. Assuming each baby has an equal chance of being a boy or girl, what is the probab
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You only need to consider the situations where 10 or 11 of the babies are girls, then subtract those probabilities from 1.  This will give probability that any other number up to 9 of the babies are girls.

Use binomial theorem.
P(x=k) = (nCk) p^k (1-p)^{n-k}

n = 11
k = 10,11
p = 1/2

P(x=10) = 11 (\frac{1}{2})^{11} = \frac{11}{2048} \\  \\ P(x=11) = 1(\frac{1}{2})^{11} = \frac{1}{2048} \\  \\ P(x \leq 9) = 1 - \frac{11}{2048} - \frac{1}{2048} \\  \\ P(x \leq 9)=\frac{2036}{2048} = \frac{509}{512}
4 0
3 years ago
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