Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the real solutions, if any, of the equation. Use the quadratic formula.3x2 + 6x = - 1
A. 
B. 
C. 
D. 
Mathematics
Find the mean of the data presented in the given table of values.
(Round to the nearest hundredth.)
A. 5.85 B. 6.75 C. 6.08 D. 6.18
Mathematics
Use radical notation to rewrite the expression. Simplify, if possible.(-8)4/3
A. 64 B. 16 C. not a real number D. -16
Mathematics
Simplify.(81.3 - 3.2) × (-15)
A. 1,186.5 B. -33.3 C. -1,171.5 D. -11,715
Mathematics