Find the conjugate of the complex number. Then multiply the complex number by its conjugate.8 - 5i
A. 13; 89
B. 3; 89
C. 8 - 5i; 89
D. 8 + 5i; 89
Answer: D
Mathematics
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Solve the equation.10n = 4n + 6 + 5n
A. -6 B. -60 C. 6 D. 60
Mathematics
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
2
A. 3x - 10
+ 23
B. 3x + 25
+ 25
C. 3x + 25
+ 23
D. 3x - 10
+ 25
Mathematics
Solve the equation graphically by finding x-intercepts.x2 - x - 5 = 0
A. x = -2.79 or x = 1.79 B. x = 0 or x = 1 C. x = -1.79 or x = 2.79 D. x = -2.29 or x = 2.29
Mathematics
Find the exact value by using a half-angle identity.sin 
A. 
B. - 
C. - 
D. 
Mathematics