The librarian at a public library wants to determine what proportion of the library users are children. Identify the sampling method used in each example below.
1) Simple random sampling 2) cluster sampling 3) convenience sampling 4) stratified sampling 5) systematic sampling
-As long as there isn't a line of people waiting to check out, each
time a patron checks out a book, the librarian records whether the patron is an adult or a
child.
-Each day this week, the librarian randomly selects 15 patrons
that check out a book that day and records whether the patron is an adult or a child.
-For each seventh patron that checks out a book, the librarian
records whether the patron is an adult or a child.
-The librarian randomly selects two days this week. On those
days, each time a patron checks out a book, the librarian records whether the patron is
an adult or a child.
-Each time a patron checks out a book, the librarian rolls a six-
sided die. If the die lands on six, then the librarian records whether the patron is an adult
or a child.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

ok so what's the question?

step-by-step explanation:

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.

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