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eduard
3 years ago
6

Add (a+b-3)+(b+2a-1)+(4-6b+2a)

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
7 0
5a-4b is the answer
Mariulka [41]3 years ago
4 0

Answer:

(a + b - 3) + (b + 2a - 1) + (4 - 6b + 2a)

=

a + 2a + 2a + b + b - 6b - 3 - 1 + 4

5a - 4b - 4 + 4

= 5a  -  4b + 0

= 5a  - 4b

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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

3 0
2 years ago
5002190 in expanded firm
bezimeni [28]
5000000 000000 0000 2000 100 90 0 i hope this helps
6 0
3 years ago
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abruzzese [7]
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2 years ago
Find the exact value of T Image below
Elanso [62]

Answer:

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Step-by-step explanation:

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T = (tan60 + 1)(2cos30 - 1) ÷ (41² - 9²)

T = (sqrt(3) + 1)(sqrt(3) - 1) ÷ 1600

T = (3-1)/1600

T = 2/1600

T = 1/800

T = 0.00125

Error: 0.002 - 0.00125

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%error

0.00075/0.00125 × 100

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4 0
3 years ago
Leonard earned $100 from a bonus plus $15 per day (d) at his job this week. Which of the following expressions best represents L
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Answer:

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