Perform the indicated operations. Be sure to simplify your answer.
- 
A. 
B. 
C. 
D. 10
Answer: B
Mathematics
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.5 - 
+ 
- 
+ ... + (-1)n-1 
+ ...
A. 
; 10
B. 
; 
C. 
; 
D. 
; 10
Mathematics
Solve for x.log8x = -5
A. -32,768
B. -390,625
C. 
D. 
Mathematics
Solve.Find the center, foci, and asymptotes of the hyperbola y2 - x2 - 4y + 6x - 21 = 0
A. C: (3, 2); F: (0, 2 + 4
), (0, 2 - 4
); A: y - 2 = x - 3, y - 2 = -(x - 3)
B. C: (3, -2); F: (4
, 0), (- 4
, 0); A: y =
x, y = - 
x
C. C: (3, 2); F: (3, 2 + 4
), (3, 2 - 4
); A: y - 2 = x - 3, y - 2 = -(x - 3)
D. C: (-1, 2); F: (4
, 0), (- 4
, 0); A: y = x, y = -x
Mathematics
Find the focus and directrix of the parabola.y2 - 16x = 0
A. (4, 0); x = 4 B. (0, 4); y = -4 C. (4, 0); x = -4 D. (4, 0); y = -4
Mathematics