a bag with 12 marbles has 3 blue marbles and 9 yellow marbles. a marble is chosen from the bag at random…

a bag with 12 marbles has 3 blue marbles and 9 yellow marbles. a marble is chosen from the bag at random. what is the probability that it is red? write your answer as a fraction in simplest form.

a bag with 12 marbles has 3 blue marbles and 9 yellow marbles. a marble is chosen from the bag at random. what is the probability that it is red? write your answer as a fraction in simplest form.

Answer

Explicación:

Paso 1: Identificar el número de casos favorables

El número de bolas rojas es 0 ya que no se mencionan en la descripción.

Paso 2: Identificar el número total de casos

El número total de bolas es 12.

Paso 3: Calcular la probabilidad

La probabilidad $P$ se calcula como $\frac{\text{casos favorables}}{\text{casos totales}}$, es decir $P=\frac{0}{12}$.

Respuesta:

$\frac{0}{12} = 0$