Which of the following is not a characteristic of both experiments and
surveys?

A. Data are collected about a population.

B. The data collected might be studied for patterns.

C. Subjects should be randomly selected.

D. The researcher exercises direct control over at least one variable.

answer: what do you mean

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3

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answer

provide more details to solve it

step-by-step explanation: