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stiv31 [10]
3 years ago
9

Se tiene en una caja 6 bolas blancas y 5 bolas negras. ¿Cuántas bolas se debe extraer como mínimo para tener la certeza de haber

extraido dos del mismo color?
Mathematics
1 answer:
vodomira [7]3 years ago
3 0

Answer:

7 bolas

Step-by-step explanation:

Aquí, queremos saber el número de bolas que se deben sacar para estar seguros de haber extraído al menos dos bolas del mismo color.

De la pregunta, hay 6 tipos y 5 tipos de bolas diferentes. Así que en caso de que saquemos 6 veces y tuviéramos las mismas bolas, estaríamos seguros de que en el séptimo sorteo estaremos cogiendo una bola de otro color ya que hemos agotado el número de bolas del primer tipo y nos queda solo con las bolas del segundo tipo.

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(02.04 MC) Your friend has $90 when he goes to the fair. He spends $5 to enter the fair and $15 on food. Rides at the fair cost
xeze [42]

Answer:

f(x)= $70 - $1.5*x

Step-by-step explanation:

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Knowing that the trips at the fair cost $ 1.50 per trip, and with x being the number of trips, then the cost after x trips will be:

$1.5*x

So the money spent after x rides can be expressed as:

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Knowing that your friend has $90 when he goes to the fair, to calculate the amount of money he has left after x rides, the amount taken to the fair and the amount spent is subtracted:

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By calling the function f(x) used to determine the amount of money left after x trips, you can finally express:

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