Solve the system.y = -2
- 1y = 3
- 1
A. (7, 1)
B. (-7, -1)
C. (7, -1)
D. (-7, 1)
Answer: B
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Use the vertex formula to find the vertex of the quadratic function.f(x) = 5x2 + 10x - 4
A. (1, 11) B. (-1, -9) C. (2, 36) D. (-2, 6)
List the elements in the set .Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}. (A ? B)'
A. {r, t, u, v, w, x, z} B. {s, u, w} C. {t, v, x} D. {q, s, t, u, v, w, x, y}
Solve the problem.A survey is taken to determine if Social Security should be privatized. Eight hundred players in a national bridge tournament are randomly surveyed. The survey found strong opposition to the concept of privatization. This conclusion might be invalid because
A. the size of the sample is too small. B. of the placebo effect. C. the sample is not representative of the population. D. there was no control group. E. none of these
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A. Yes B. No