Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 4i + 2j + 8k, v = -i - 2j - 2k
A. 6
; 
i + 
k
B. 180; 
i + 
k
C. 180; 
i + 
j + 
k
D. 6
; 
i - 
k
Answer: D
Mathematics
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Provide an appropriate response.Fill in the blanks to complete the statement. The graph of P(x) = 6(x - 9)2 - 7 is a parabola with axis of symmetry 
and vertex 
.
A. x = 6; (-9, -7) B. (-9, -7); x = -9 C. x = 9; (-9,-7) D. x = 9; (9, -7)
Mathematics
Simplify.(
+ 2)(
+ 2)
A. 5
+ 4
B. 
+ 4
C. 
+ 4
+ 4
D. 
+ 2
+ 2
+ 4
Mathematics
Multiply.
? 4 ? 
A. 13
B. 
C. 288
D. 
Mathematics
Identify whether the equation is a linear equation in two variables. Answer "is" or "is not."7y = -x - 4
A. is B. is not
Mathematics