Which one is bigger 9/10 or 19/20

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?

What additional information could be used to prove abc =mqr using sas? check all that apply.

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?