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Delicious77 [7]
3 years ago
7

Which Algerbredic expression is equivelant to the expression below

Mathematics
2 answers:
Harrizon [31]3 years ago
7 0

Answer:

<h2><em><u>hope </u></em><em><u>it </u></em><em><u>helps </u></em><em><u>you </u></em><em><u>see </u></em><em><u>the </u></em><em><u>attachment </u></em></h2>

Reil [10]3 years ago
3 0

21x + 40.

If you multiply 7x by 3, you get 21x.

Then, multiply 3 by 12 and add 4.

3 * 12 = 36

36 + 4 = 40.

Our new equation is 21x + 40.

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solo el 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal. Si
prisoha [69]

Usando la distribución binomial, hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

<h3>¿Qué es la distribución binomial?</h3>

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

Los parámetros son:

  • n es el número de ensayos.
  • p es la probabilidad de éxito en un ensayo
  • x es el número de éxitos

En este problema, hay que:

  • 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal, o sea p = 0.2.
  • Llegan 10 empleados, o sea, n = 10.

La probabilidad de que el guardia de seguridad encuentre al menos uno en la base militar restringida es dada por:

P(X \geq 1) = 1 - P(X = 0)

En que:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{10,0}.(0.2)^{0}.(0.8)^{10} = 0.1074

Por eso:

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.1074 = 0.8926

Hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

Puede-se aprender más a cerca de la distribución binomial en brainly.com/question/25132113

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3 years ago
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