First blank: not random Because he sent it to the top 5 students. Not random students throughout the grade.
second blank: I would guess not valid because it was not a random sample.
Answer: 4x-8x, t-8=t hope this helps!
Step-by-step explanation:
Answer:
I don't know how to do it the subject
Answer:
A
Step-by-step explanation:
An educated guess because I really forgot how to do these
11/12 i believe that is the answer
