Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Answer: C
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Choose the equation that matches the graph.
A. 2x2 = y B. y2 = 2x C. x2 = 2y D. x2 = -2y
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 problem.At Loop College, the mean grade point average (gpa) of the current student body is 
with a standard deviation of 0.64. Find the gpa of a student whose z-score is 0.6. Round to the nearest hundredth.
A. 3.40 B. 3.14 C. 2.85 D. 2.16
Find the derivative.y = 
A. 1 - cos (x5) B. -10x9 cos (x5) C. -sin (x5) D. 10x9 cos (x5)