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erastovalidia [21]
3 years ago
7

A classmate walks into class and states that he has an extra ticket to a chamber orchestra concert on Friday night. He asks ever

yone in the class to put their name on a piece of paper and put it in a basket. He plans to draw from the basket to choose the person who will attend the concert with him. If there are 38 other people in class that night, what is your chance of being chosen to attend the concert
Mathematics
1 answer:
VladimirAG [237]3 years ago
3 0

Answer:

2.56% chance of being selected

Step-by-step explanation:

Given

n = 39 --- you and 38 others

Required

Chance of you being selected

To do this, we simply calculate the probability using:

Pr(x) = \frac{n(x)}{n}

Where:

n(x)= 1 --- i.e you are just 1 person

So:

Pr(x) = \frac{1}{39}

Pr(x) = 0.0256

Express as percentage

Pr(x) = 2.56\%

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Problema de capacidades Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. ¿Cuánt
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Answer:

Hay 200 botellas de 5 litros y 1000 botellas de 2 litros.

Step-by-step explanation:

Un sistema de ecuaciones lineales es un conjunto de dos o más ecuaciones de primer grado, en el cual se relacionan dos o más incógnitas.

Resolver un sistema de ecuaciones consiste en encontrar el valor de cada incógnita para que se cumplan todas las ecuaciones del sistema.

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  • y= cantidad de botellas de 5 litros.

Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. Entonces es posible plantear el siguiente sistema de ecuaciones:

\left \{ {{2*x+5*y=3000} \atop {x+y=1200}} \right.

Existen varios métodos para resolver un sistema de ecuaciones. Resolviendo por el método de sustitución, que consiste en despejar o aislar una de las incógnitas y sustituir su expresión en la otra ecuación, despejas x de la segunda ecuación:

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x= 1200 - y

x=1200 -200

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