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tresset_1 [31]
3 years ago
8

Need help with all three

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
7 0

Answer:

i can only do 2 and 3 sorry

2. a

3.d

Step-by-step explanation:

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Answer:

B. 1/3x2y cm3

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The scale used on a map is 2 cm: 3500 feet. What is the distance between two cities if they are 10 cm away from each other on th
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3500 x 5 = 17500 feet
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Un dispositivo de seguridad biométrico erróneamente rechaza la admisión de 1 en 1000 personas autorizadas de una instalación que
Leona [35]

Usando probabilidad condicional, se encuentra que hay una probabilidad de 0.0186 = 1.86% que la persona esta realmente autorizada para ingresar.

------------------

Probabilidad Condicional

P(B|A) = \frac{P(A \cap B)}{P(A)}

En que:

  • P(B|A) es la probabilidad de que ocurra el evento B, dado que A sucedió.  
  • P(A \cap B) es la probabilidad de que ocurran tanto A como B.  
  • P(A) es la probabilidad de que ocurra el evento A.

En este problema:

  • Evento A: Persona rechazada.
  • Evento B: Autorizada.

La probabilidad de una persona ser rechazada es:

  • \frac{1}{1000} = 0.001 de 95% = 0.95(autorizada).
  • \frac{1 000 000 - 1}{1 000 000} = 0.999999 de 5% = 0.05(non autorizadas).

O sea:

P(A) = 0.001(0.95) + 0.999999(0.05) = 0.05094995


La probabilidad de una persona estar autorizada y ser rechazada es:

P(A \cap B) = 0.001(0.95)

¿Cuál es la probabilidad que la persona esta realmente autorizada para ingresar?

P(B|A) = \frac{P(A \cap B)}{P(A)}

P(B|A) = \frac{0.001(0.95)}{0.05094995}

P(B|A) = 0.0186

Probabilidad de 0.0186 = 1.86% que la persona esta realmente autorizada para ingresar.

Un problema similar es dado en brainly.com/question/18734831

3 0
3 years ago
Yuto and Lian are at train stations 1,880 kilometers apart. Yuto boards a train heading east at an average speed of 220 kilomete
GalinKa [24]

Answer:

1,000 km

Step-by-step explanation:

Assume that when two train pass each other, Lian has traveled x (km)

=> The time Lian has traveled when two trains pass each other is:

Time = Distance/ Rate = x/ 250 (hour)

As Lian and Yuto travelled from the two opposite train stations and the train stations are 1,880 km apart

=> When two train pass each other, Yuto has traveled 1,880 - x (km)

=> The time Yuto has traveled when two trains pass each other is:

Time = Distance/ Rate = (1,880 - x)/220 (hour)

As Lian and Yuto board at the same time, so that when two trains pass each other, the time both of them have traveled is equal

=> x/ 250 = (1,880 - x)/220

=> 220x = 250 x (1,880 -x)

=> 220x = 470,000 - 250x

=> 470x = 470,000

=> x = 1,000

So that, when two train pass each other, Lian has traveled x = 1,000 km

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4 divided by 604 remainder?
ozzi
Are you asking for 4 divided by 604, or 604 divided by 4?
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