Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = - 
i + 
j + k, v = i + j + 2k
A. 2
; 
i + 
j - 
k
B. 8; 
i - 
j - 
k
C. 8; 
i - 
j + 
k
D. 2
; - 
i + 
j - 
k
Answer: A
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Factor out the negative of the greatest common factor.-54m9 + 6m7 - 42m5
A. -m5(-54m4 + 6m2 + 42) B. -6m5(9m4 - m2 + 7) C. -6(9m9 - m7 + 7m5) D. -m5(54m4 - 6m2 + 42)
Solve.A company has 63,000 employees. Of these, 
drive alone to work, 
car pool, 
use public transportation, 
cycle, and the remainder use other methods of transportation. How many employees use each method of transportation?
A. Drive alone: 2,100; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
B. Drive alone: 21,000; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
C. Drive alone: 21,100; car pool: 10,500; public transportation: 8,900; cycle: 7,000; other: 1000
D. Drive alone: 21,000; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
Provide an appropriate response.Find the perimeter of the figure. 
A. 68.2 in. B. 29.8 in. C. 34.1 in. D. 34.4 in.
Use the square root method to solve the equation. x2 - 64 = 0
A. 32 B. 8 C. ±9 D. ±8