Solve the equation by completing the square.x2 + 6x - 40 = 0
A. {-4, 10}
B. {± 
}
C. {4, -10}
D. {-30, -10}
Answer: C
Mathematics
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Graph the ellipse described.Center at (0, 0)Focus at (4
, 0)Vertex at (8, 0)
A. 
B. 
C. 
D. 
Mathematics
Write the first four terms of the sequence whose general term is given. an = 
A. 
, 
, 3, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. 
, 
, 
, 
Mathematics
Find the derivative of the function.y = sec 3x
A. 
= 3 sec x tan x
B. 
= 3 sec 3x tan 3x
C. 
= 3 sec 3x cot 3x
D. 
= - sec 3x tan 3x
Mathematics
Solve the problem.A company is constructing an open-top, square-based, rectangular metal tank that will have a volume of 
What dimensions yield the minimum surface area? Round to the nearest tenth, if necessary.
A. 5.4 ft by 5.4 ft. by 1.8 ft B. 10.3 ft by 10.3 ft. by 0.5 ft C. 4.7 ft by 4.7 ft. by 2.4 ft D. 3.8 ft by 3.8 ft. by 3.8 ft
Mathematics