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Volgvan
2 years ago
14

I need help with this problem.

Mathematics
2 answers:
mixas84 [53]2 years ago
7 0
It’s 45 ............
Alekssandra [29.7K]2 years ago
3 0
A and 0 both equals 45 degrees
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Kedwin can watch movies at home in two ways. he can order unlimited online movies for $10 a month. he could also go to the local
dimulka [17.4K]

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The answer is option d-13 movies per month

Step-by-step explanation:

the reason is that is the first point on the graph that is above the price of the cost of the monthly unlimited movies

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3 years ago
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-4.2 (-2.8+4.5) what is the value of the expression
Artyom0805 [142]
-7.14 should be your answer!
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Who created Sports Illustrated?
IRISSAK [1]

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"the life length x (in years) of a dvd player" is exponentially distributed with mean 5 years. what is the probability that a mo
loris [4]
The exponential distribution is:
\lambda e^{- \lambda x}
where \lambda = \frac{1}{mean}=\frac{1}{5}

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:

P(x \ \textgreater \ 8 | x\ \textgreater \ 5) = \frac{P(x\ \textgreater \ 8)}{P(x\ \textgreater \ 5)} = \frac{e^{-8/5}}{e^{-5/5}} = e^{-3/5} = 0.549

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
Medium of 8,9, 10, 10, 11, 11, 11, 12, 13​
Darina [25.2K]

Answer: 10.5

Step-by-step explanation:

Hope it's right!

7 0
2 years ago
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