Find the reciprocal, if it exists.- 
A. 1
B. 
C. 
D. - 
Answer: D
Mathematics
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Write the system of equations that corresponds to the augmented matrix.
A. 
B. 
C. 
D. 
Mathematics
Multiply.(x - 7)(x + 7)(x2 + 49)
A. x4 - 14x2 - 49 B. x4 - 2401 C. x4 - 49 D. x4 - 196x2 + 2401
Mathematics
Solve the problem.The area of a square is 81 square centimeters. If the same amount is added to one dimension and removed from the other, the resulting rectangle has an area 9 square centimeters less than the area of the square. How much is added and subtracted?
A. 12 cm B. 3 cm C. 4 cm D. 9 cm
Mathematics
Decide whether or not the functions are inverses of each other.f(x) = 
, domain [-3, ?); g(x) = x2 + 3, domain (-?, ?)
A. Yes B. No
Mathematics