Simplify the exponential expression.x-9 ? x7
A. x16
B. x2
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Find the vertices and foci of the following hyperbola:
- 
= 1
A. Vertices: (0, 4), (0, -4); Foci: (0, 10), (0, -10) B. Vertices: (16, 0), (-16, 0); Foci: (10, 0), (-10, 0) C. Vertices: (4, 0), (-4, 0); Foci: (10, 0), (-10, 0) D. Vertices: (0, 10), (0, -10); Foci: (0, 4), (0, -4)
Mathematics
Find projv u.v = k, u = 9i + 2j + 6k
A. 6k
B. 
k
C. 
i + 
j + 
k
D. 
i + 
j + 
k
Mathematics
Write the first four terms of the recursive sequence.a1 = 8, an = 1 - 
for n ? 2
A. 8, 
, 
, -6
B. 8, 
, - 
, 8
C. 8, - 
, 
, 
D. 8, 
, - 
, -8
Mathematics
c = 17, a = 6. Find b.
Mathematics