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please answer d through h
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- Produce a COUNTER-EXAMPLE to show thatVx (-y +2,22 +323, 2233) =? 0 (3y -3222, 223, -2 + 2) 0 (-3y +3X372, -332, 1 + 2x) 0 (2y +2224-423,1 + 22) 0 (-34-3222, 42,1 +22) 0 (-3y +322y2, -3'2, 1 + 2)What is the correct evaluation of x2 - y2 - z2, when x is equal to -2, y is equal to 3 and z is equal to 4?
- assume that the 160 students who take this exam will receive one of 24 grades i. What does the pigeonhole principle tell us about the exam results of these students? ii. Regardless of the scores assigned, how many other students must get the same grade as you?A tennis player makes a successful first serve 51% of the time. If she serves 9 times, what is the probabiliyt that she gets exactly 3 successful first serves in? Assume that each serve is independent of the others.Sketch the nullcline for: x' = 4 - y2 + x2 Explain.