Find the indicated cross product.v = -4i - 3j - 4k, w = 4i + 2j + 5kFind v × w.
A. 4i + 7j - 4k
B. -7i + 4j + 4k
C. 2i + 4j + 4k
D. -23i + 36j - 20k
Answer: B
Mathematics
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Solve the problem.Given that the polar equation r = a(1 - e2)/(1 + e cos ?) models the orbits of planets about the sun, estimate the closest approach of a planet for which 
and 
to the sun.
A. 9 astronomical units B. 33 astronomical units C. 17 astronomical units D. 23 astronomical units
Mathematics
Find the exact length of the line segment shown int he figure. Approximate this length to two decimal places when appropriate.
A. 
? 8.60
B. 7
C. 8
D. 
? 8.19
Mathematics
For the given functions f(x) and g(x), find (f ? g)(x) or 
(x) as indicated.f(x) = x2 + 8x + 12, g(x) = x + 6Find 
(x).
A. x2 + 2 B. x3 - 6 C. x + 2 D. x - 6
Mathematics
Solve the following equation.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics