Find the sum of the arithmetic sequence.{5n + 2}, n = 47
A. 5898.5
B. 5734
C. 5616.5
D. 6063
Answer: B
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Solve. -4x2 = 12x
A. 3, 0 B. -3, 4 C. 3, 4 D. -3, 0
Find the area enclosed by the given curves.y = csc 2 x, y = cot 2 x, x = 
, and x = 
A. 
B. ?
C. 
D. 
Solve the problem.A force of 5 pounds acts in the direction of 8° to the horizontal. The force moves an object along a straight line from the point (8, 6) to the point (20, 13), with distance measured in feet. Find the work done by the force. Round the answer to one decimal place, if necessary.
A. 69.5 ft-lb B. 94.1 ft-lb C. 68.8 ft-lb D. 13.8 ft-lb
Use completing the square to rewrite the equation in one of the standard forms for a conic and identify the conic.6x2 - 7y2 - 12x + 42y - 99 = 0
A. (x - 3)2 + (y - 1)2 = 42; circle
B. 
- 
= 1; hyperbola
C. 
+ 
= 1; ellipse
D. (x - 1)2 + (y - 3)2 = 42; circle