Decide whether the ordered pair is a solution of the given system.
A. Yes
B. No
Answer: A
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Find the extrema of the function on the given interval, and say where they occur.csc2x + 2 cot x, 0 < x < ?
A. local minimum: 0 at x = 
B. local maximum: 0 at x = 
C. local minimum: 0 at x = 
D. local maximum: 0 at x = 
Give a geometric description of the set of points whose coordinates satisfy the given conditions.x2 + y2 + z2 = 81, z = -2
A. All points within the sphere x2 + y2 + z2 = 81 and above the plane z = -2 B. All points on the sphere x2 + y2 + z2 = 81 and above the plane z = -2 C. The sphere x2 + y2 + z2 = 4 D. The circle x2 + y2 = 77 in the plane z = -2
Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree.a = 6, c = 10, B = 123°
A. b = 17.1, A = 23°, C = 34° B. b = 20, A = 19°, C = 38° C. b = 14.2, A = 21°, C = 36° D. no triangle
Economists define the disposable annual income for an individual by the equation D = (1 - r)T, where T is the individual's total income and r is the net rate at which he or she is taxed. What is the disposable income for an individual whose income is $20,000 and whose net tax rate is 31%? ?
A. $6,200 B. $47,600 C. $20,000 D. $13,800 E. $33,800