Find the root if it is a real number.
A. Not a real number
B. 4
C. -2
D. -4
Answer: D
Mathematics
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Simplify the expressions. Make all exponents positive.(-4x7)2
A. 16x9 B. -4x14 C. -16x14 D. 16x14
Mathematics
Solve.How many 7-card hands are possible with a 52-card deck?
A. 18,009,460 B. 9.365 x 108 C. 1.338 x 108 D. 2,908,360
Mathematics
Fill in the blank with the correct symbol <, >, or =, to make a true statement.-7 
0
A. = B. > C. <
Mathematics
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Mathematics