A teacher is interested in determining the effect the amount of time spent studying has on mathematics test scores. The teacher surveys twenty students in her first-period class. Part A: Identify the type of sampling being used.

Part B: Is the method of sampling used appropriate or inappropriate for drawing valid conclusions?

Part C: Explain your answer to Part B with a complete sentence.

c

step-by-step explanation:

a.) list the factors of 40.

1/2/4/5/8/10/20/40

b.) list the factors of 40 that represent the number of cans that could be on each shelf.

5

c.) how many different arrangements of cans are possible?

just one because if you put more on one shelf you will go way over 40 and the cabinet will probably break.

d.) what are the possible arrangements of the cans?

put 5 cans on each self to reach 40 cans in total.

e.) which arrangement uses all the shelves?

5 because you can put 5 cans on each shelf, and since there are 8 shelfs you are equally going to get 40 cans.

b. ol

step-by-step explanation:

i got the answer right on edg.

congruent: (geometry) (of figures) identical in form; coinciding exactly when superimposed.

-1/3(x+1)^5

i’m pretty sure this is correct