Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 8i - 4j, w = 2i - 8j
A. 29°
B. 107.5°
C. 120°
D. 49.4°
Answer: D
Mathematics
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Find the volume by double integration.The volume under the surface 
and above the triangle enclosed by the lines 
, and 
A. 
B. 
C. 162
D. 
Mathematics
Simplify. Write the answer using only positive exponents. Leave the answer in exponential notation.(3x4)4
A. 81x4 B. 81x16 C. 3x16 D. 81x8
Mathematics
Find the domain of the composite function f ? g.f(x) = 
; g(x) = 
A. 
B. {x | x ? 2}
C. all real numbers
D. {x| x ? 2}
Mathematics
Write the first four terms of the recursive sequence.a1 = 5, an = 1 - 
for n ? 2
A. 5, - 
, 
, 
B. 5, 
, - 
, -5
C. 5, 
, 
, -3
D. 5, 
, - 
, 5
Mathematics