Amovie theater conducted a survey to see what customers preferred at the concession stand. the theater asked every fifth person who entered the movie theater every friday for a month what his or her favorite movie snack was. were the results of the survey valid? yes, because the theater surveyed a random sample. yes, because the theater only surveyed children. no, because the theater did not survey everyone in the theater. no, because the theater did not use a random sample.

Yes, because the theater surveyed a random sample.  Please give me hearts and stars.

Step-by-step explanation:

Results of a survey are valid if the sample space is representative of the population. The movie theater surveyed every fifth person which means all age groups and genders were represented, and the people were selected randomly.  Therefore, the results of the survey were valid because the theater surveyed a random sample.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

slope is 35 and 20 miles is the y-intercept.

step-by-step explanation: