which of these is not a random sample that would be valid to determine the favorite food of students in your school?

a. five students at a local pizza parlor
b. Every sixth student on the attendance list
c. every tenth student entering school in the morning
d. three students from each lunch table in the lunchroom

explain your

D. three students from each lunch table in the lunchroom.

Step-by-step explanation:

I supposed that was the only option that made sense.

c.35

step-by-step explanation:

8+13=21

21+8=29

29+6=35

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.