Solve by completing the square.x2 - 12x - 13 = 0
A. -13, 1
B. -12, 1
C. -12, -1
D. -1, 13
Answer: D
Mathematics
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Solve the problem.Find the center and radius of the sphere with equation 3x2 + 3y2 + 3z2 - 2x + 2y - 9 = 0
A. center = 
; radius = 
B. center = 
; radius = 
C. center = 
; radius = 
D. center = 
; radius = 
Mathematics
Write the solution set in interval notation.x ? 3
A. 
B. 
C. 
D. 
Mathematics
Decide whether the statement is true or false.
is irrational.
A. True B. False
Mathematics
Write as a single logarithm.log10 x + log10 4
A. log10 (x + 4)
B. log10 
C. log10 4x
D. (log10 x)(log10 4)
Mathematics