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olga nikolaevna [1]
3 years ago
13

The Flu Fighters competed against 40 bands in the Chicken Soup County Battle of the Bands. The top 15% will compete in the All V

irus State Finals. How many bands will compete in the finals?
Mathematics
1 answer:
True [87]3 years ago
6 0
There will be 6 bands competing in the finals.

To find 15% for the finals, you need to multiply the total number of bands by 0.15.  There are 41 total bands.

41 x 0.15 = 6.15 or about 6 bands
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Answer:

64

Step-by-step explanation:

60 + 56 + x = 180

116 + x = 180

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7 0
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Slope: -2/3 y-intercept: -8 find the linear equation
puteri [66]

Answer:

y = - \frac{2}{3} x - 8

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The exponential distribution is:
\lambda e^{- \lambda x}
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The probability we want is how likely will a dvd player last more than 8 years, given it has already lasted 5 years
To find this, you use conditional probability.
P(A|B) = \frac{P(A and B)}{P(B)}
where A is P(x>8) and B is P(x>5)
To find these probabilities, integrate over the distribution:
P(x \ \textgreater \ N) = \int_N^{\infty} \frac{1}{5} e^{-x/5} dx = e^{-N/5}

Sub into conditional probability formula:

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Final Answer: Given a dvd player is more than 5 years old, the probability that it will last another 3 more years is about 54.9%
3 0
3 years ago
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VLD [36.1K]
X-9=12
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3 years ago
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