2 years ago

A2-12a+32÷a-4 pls guys ans fast

Mathematics

1 answer:

Serga [27]2 years ago

7 0

Answer:

answer

$\frac{ - 12a {}^{2} - 2a + 32 }{a}$

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Answer:

1/14

Step-by-step explanation:

1/2+3/7=7/14-6/14=1/14

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3 years ago

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Answer:

7x² + 4x + 32

Step-by-step explanation:

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2 years ago

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3 years ago

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3 years ago

The length of time for one individual to be served at a cafeteria is a random variable having an exponential distribution with a

Leya [2.2K]

Answer:

a) 0.25

b) 52.76% probability that a person waits for less than 3 minutes

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

$f(x) = \lambda e^{-\lambda x}$

In which $\lambda = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

In this question:

$m = 4$

a. Find the value of λ.

$\lambda = \frac{1}{m} = \frac{1}{4} = 0.25$

b. What is the probability that a person waits for less than 3 minutes?

$P(X \leq 3) = 1 - e^{-0.25*3} = 0.5276$

52.76% probability that a person waits for less than 3 minutes

3 0

2 years ago

A2-12a+32÷a-4 pls guys ans fast​

A2-12a+32÷a-4 pls guys ans fast