Find a unit vector in the direction of u
?
?
A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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Simplify the expression. Assume that all variables are positive when they appear.(
+ 
)(
- 
)
A. 8 - z
B. 8 - 2
C. 8 - 2
D. 8z
Mathematics
Solve the system.
A. x = -5, y = 1, z = -1, w = 0 B. x = 0, y = -5, z = 1, w = 5 C. x = -10, y = 0, z = -2, w = 1 D. x = 5, y = 3, z = -1, w = -1
Mathematics
Find the determinant of the given matrix.
A. 0 B. 7 C. -7 D. -23
Mathematics
Find the quotient.
A. 23
B. -33
C. - 
D. -23
Mathematics