What is the common difference between the elements of the arithmetic sequence below? -18, -22.5,-27,-31.5,-36

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?

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid