3 years ago

Cual es el valor de verdad de: El rio magdalena es el rio más largo de colombia

Mathematics

1 answer:

allsm [11]3 years ago

5 0

Yes, it is the longest river

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The number of typing errors made by a typist has a Poisson distribution with an average of seven errors per page. If more than s

Aleks [24]

Answer:

0.599 is the probability that a randomly selected page does not need to be retyped.

Step-by-step explanation:

We are given the following in the question:

The number of typing errors made by a typist has a Poisson distribution.

$\lambda =7$

The probability is given by:

$P(X =k) = \displaystyle\frac{\lambda^k e^{-\lambda}}{k!}\\\\ \lambda \text{ is the mean of the distribution}$

We have to find the probability that a randomly selected page does not need to be retyped

P(less than or equal to 7 mistakes in a page)

$P( x \leq 7) = P(x =1) + P(x=1) +...+ P(x=6) + P(x = 7)\\\\= \displaystyle\frac{7^0 e^{-7}}{0!} + \displaystyle\frac{7^1 e^{-7}}{1!} +...+ \displaystyle\frac{7^6 e^{-7}}{6!} + \displaystyle\frac{7^7 e^{-7}}{7!} \\\\= 0.59871\approx 0.599$

Thus, 0.599 is the probability that a randomly selected page does not need to be retyped.

4 0

4 years ago

Solve 3x2 + 2x + 7 = 0. Round solutions to the nearest hundredth. (5 points)

pishuonlain [190]

3x²<span> + 2x + 7 = 0
D = b</span>² - 4ac = 2² - 4*3*7 = 4 - 84 = -80
D < 0 ⇒ <span>No real solutions</span>

7 0

4 years ago

Read 2 more answers

K(x)= -3/4 , what is x ?

WITCHER [35]

The correct Answer is
X=-3/4k

6 0

3 years ago

Help me please ! show ALL WORK and do it right .

Neporo4naja [7]

Answer:

≈ 37%

Step-by-step explanation:

Percent decrease is calculated as

$\frac{decrease}{original}$ × 100%

decrease = $3.92 - $2.46 = $1.46, thus

percent decrease = $\frac{1.46}{3.92}$ × 100% ≈ 37%

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3 years ago

Applications of systems of equations plz

Anna71 [15]

Answer:

plz i need help

Step-by-step explanation:

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3 years ago