Solve the problem.Of all points (x, y, z) that satisfy x - y - z = 1, find the one that minimizes x2 + 2y2 + 3z2.

A.
B.
C.
D.


Answer: B

Mathematics

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Find the exact value by using a half-angle identity.cos 

A. -  
B.  
C. -  
D.  

Mathematics

Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.8 + 6i

A. complex, pure imaginary B. real, complex C. none of these D. complex, nonreal complex

Mathematics

Add. Write a mixed numeral for the answer.1214

A. 27
B. 28
C. 27
D. 26

Mathematics

Solve the equation. - 9 = x

A. -  
B.
C. - 27
D.  

Mathematics