Simplify:
A. -x/3
B. 0
C. 1/3x
D. x3

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Ineed i been stuck on this question since yesterday

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if