A matrix has an inverse if and only if its determinant does not equal 0. Determine whether the given matrix has an inverse.
A. No
B. Yes
Answer: B
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Determine whether the relation is a function.{(-3, -9), (-2, -6), (4, -1), (4, -5)}
A. It is not a function. B. It is a function.
Find the product. Simplify before performing the multiplication.
? 
? 
A. 
B. 
C. 
D. 
Find the x-intercepts of the graph of the equation. (The grids are intentionally not included.)y = 2x2 - 13x - 24
A. (-8, 0), 
B. (-7, 0), 
C. (8 0), 
D. (7, 0), 
The displacement d (in meters) of an object at time t (in seconds) is given. Describe the motion of the object. What is the maximum displacement from its resting position, the time required for one oscillation, and the frequency?d = 4 cos (3t)
A. simple harmonic; 4 m; 3 ? sec; 
oscillations/sec
B. simple harmonic; 4 m; 
? sec; 
oscillations/sec
C. simple harmonic; 4 m; 
sec; 
? oscillations/sec
D. simple harmonic; -4 m; 
? sec; 
oscillations/sec