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Advocard [28]
2 years ago
5

A car travels a distance of D km at 80 km/h and arrives 20 min late. If the car travels at

Mathematics
1 answer:
Leya [2.2K]2 years ago
4 0
It’s would be 160 km since 160/80x60=120 min and 160/120x60=80min
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This is a function <br><br> true or false
WINSTONCH [101]
False it’s not a function
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3 years ago
Is t = 9 a solution to the inequality below?<br> 8&gt;t<br> Please hurry and explain!
dexar [7]

Answer:

no

Step-by-step explanation:

its 7

7 0
3 years ago
14. -9(2.7 -1.55) + 33<br> what is the answer
Andreas93 [3]

Answer:

25.15

Step-by-step explanation:

2.7 - 1.55= 1.15 + 33= 34.15 - 9= 25.15

8 0
4 years ago
Ariana is going to invest in an account paying an interest rate of 1.9% compounded monthly. How much would Ariana need to invest
Brrunno [24]

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8 0
4 years ago
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
3 years ago
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