Prove that for all sets a, b, c, d, (a × b) n (c × d) = iff either a n c = 0 or b n d = 0.

Sports and entertainment class, your goal is to increase attendance and make a profit for a game by getting your team on a winning track with total salaries less than $3,000,000

Barbara is interested in pursuing a career in the science and math pathway. which qualifications will her reach that goal? a.an advanced knowledge of physics and math b.an advanced knowledge of engineering and math c. an advanced knowledge of physics and robotics an d. advanced knowledge of machinery and math

Choose the correct citation for the case which established the "minimum contacts" test for a court's jurisdiction in a case. select one: a. brown v. board of education of topeka, 347 u.s. 483 (1954). b. international shoe co. v. washington, 326 u.s. 310 (1945) c. haynes v. gore, 531 u.s. 98 (2000). d. international shoe co. v. washington, 14 u.s. code 336.