1) ben had three times as many nickels as dimes. if the total value of his coins was $1, how many of each kind of coin did he have?

Se tiene en una caja de canicas 10, 4 blancas y 6 negras ¿cual es la probabilidad que en 2 extracciones con reemplazo sean blancas? ¿cual es la probalidad que en 2 extracciones sin reemplazo sean negras?

The anwser cause i do not understand just plez

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table