Use the definition of equality of complex numbers to find the real numbers x and y such that the equation is true.6 + yi = x + 
A. x = 6, y = -3
B. x = -6, y = 3
C. x = -6, y = -3
D. x = 6, y = 3
Answer: D
Mathematics
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Evaluate the expression for the given replacement values.x - z for x = 8.5, z = 0.62
A. 7.98 B. 7.88 C. -7.88 D. 9.12
Mathematics
Solve the inequality. Graph the solution set and write it in interval notation.-4x > -12 and x + 4 > 6
A. (-?, 2) ? (3, ?)
B. ?
C. (3, ?)
D. (2, 3)
Mathematics
Multiply or divide as indicated.
? 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Find f (f-1(9))
A. 4 B. 9 C. 6 D. 7
Mathematics