Find the length and direction (when defined) of u × v.u = 4i + 2j + 8k, v = -i - 2j - 2k
A. 6
; 
i + 
k
B. 180; 
i + 
j + 
k
C. 6
; 
i - 
k
D. 180; 
i + 
k
Answer: C
Mathematics
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Perform the indicated operations and simplify.-4.0 ? 5.4 ÷ 2
A. 21.6 B. 10.8 C. -21.6 D. -10.8
Mathematics
Find a polynomial function of lowest degree with rational coefficients that has the given numbers as some of its zeros.3 - 
, 1 + i
A. f(x) = x4 + 8x3 - 20x2 + 24x + 10 B. f(x) = x4 + 10x3 + 20x2 - 24x + 12 C. f(x) = x4 - 8x3 + 20x2 - 24x + 12 D. f(x) = x4 - 3x3 + 20x2 - 12x + 12
Mathematics
Find the domain of the function. Express the answer in interval notation.g(x) = 
A. (-3, ?) B. [-3, ?) C. (-?, ?) D. [0, ?)
Mathematics
Solve the compound inequality. Graph the solution set.-5x < -5 and x + 5 > 4
A. (-?, -1) ? (1, ?)
B. ?
C. (1, ?)
D. (-1, 1)
Mathematics