Speciwuj
categorize these samples as representative or not representative of the given populations.
tina interviewed the school's soccer
team members to learn the exercise
habits of the students at her school.
alana talked to three of five teachers
from each department in her school
to find out which school subject
teachers enjoyed most when they
were young
joe talked to fathers of high school
students to understand the
responsibilities of working parents.
alisha spoke to her contacts on a
social media website to find out how
much time social media users
spend online.
jeremy surveyed five students from
each class at his school to determine
the favorite hobbies of students in
his school.

16

step-by-step explanation:

2 x 40 = 80

80/5

= 16

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.