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
Mathematics
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Find the phase shift.y = -5 sin
A. 
units to the left
B. 
units to the right
C. 5? units up
D. 4? units down
Mathematics
Use a graphing calculator to solve the inequality.x3 - 7x2 + 7x + 15 > 0
A. (-1, 3) ? (5, ?), or {x
-1 < x < 3 or x > 5}
B. (-?, -5) ? (-3, 1), or {x
x < -5 or -3 < x < 1}
C. (-?, -1) ? (3, 5), or {x
x < -1 or 3 < x < 5}
D. (-5, -3) ? (1, ?), or {x
-5 < x < -3 or x > 1}
Mathematics
Choose the correct graph of the function.f(x) = - 
A. 
B. 
C. 
D. 
Mathematics
Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Mathematics