Jake and mary are both members of a population, and a simple random
sample is being conducted. if the chance of jake being selected is an, what
is the chance of mary being selected?

I’m which figure is point g an orthocenter

Nine more than four times a number is the same as one less than twice the number. find the number?

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?