The school cafeteria has 19 round tables and 13 rectangular tables. Each round table has 3 chairs, and each rectangular table has 7 chairs. How many chairs are there in all?
WILLL GIVE BRAINLIST!!!

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?

Sketch one cycle if the cosine function y=2cos2theta

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?