Which of the following would produce a simple random sample? Select all that apply. A. Ask someone their opinion on which books are best, and select those . B. List each book on a separate piece of paper, place them all in a hat, and pick . C. List the names in alphabetical order and take the first on the list. D. Number the books from 1 to 9 and use a random number generator to produce different numbers from 1 to 9 that correspond to the books selected.

B. List each book on a separate piece of paper, place them all in a hat, and pick three.

C. Number the books from 1 to 9 and use a random number generator to produce different numbers from 1 to 9 that correspond to the books selected.

Step-by-step explanation:

A simple random sample can be defined as a subset of items selected from a statistical population or larger set and each member of the subset has an equal or the same probability of being selected.

Generally, each member of the subset are selected randomly and by chance, as such a simple random sample is an unbiased representation of a statistical population.

Hence, the following would produce a simple random sample;

1. List each book on a separate piece of paper, place them all in a hat, and pick three or more.

2. Number the books from 1 to 9 and use a random number generator to produce different numbers from 1 to 9 that correspond to the books selected.

thats not a system of equations, that is a solution

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1