Solve the problem.The volume of a right circular cone is V = 
?r2h, where r is the radius of the base and h is the height. Solve this formula for h.
A. h = 
B. h = 
C. h = 
D. h = 
Answer: C
Mathematics
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Solve by completing the square to obtain exact solutions.x2 + 4x + 68 = 0
A. -2 ± 2
i
B. -2 ± 8i
C. 6, -10
D. 2 ± 8i
Mathematics
Find the LCD for the rational expression.
, 
A. (x + 5)(3x - 5) B. 3x - 5 C. (x - 5)(3x + 5) D. x + 5
Mathematics
Solve the equation.
?
?Round your answer to four decimal places.
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve the problem.If an object is thrown upward with an initial velocity of 
, its height after t sec is given by 
Find the number of seconds before the object hits the ground.
A. 4 sec B. 64 sec C. 112 sec D. 8 sec
Mathematics