Identify each sample as biased or unbiased, Every fifth person coming into a grocery store is asked to name their favorite radio
station.
A. Unbiased because they are randomly selected, and many different types of people
shop at grocery stores.

B. Biased because the type of groceries you buy reflects the type of music you listen
to.

C. Unbiased because the type of groceries you buy reflects the type of music you listen

D. Biased because they are randomly selected and many different types of people shop
at grocery stores.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

it is x=-4

step-by-step explanation:

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: