Express the statement as an equation involving the indicated variables.The circumference C of a circle is the product of ? and its diameter d.
A. C = 2?d
B. C = ? + d
C. C = ?d
D. C = 
Answer: C
Mathematics
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Integrate the function.
A. 
sin-1 
x + C
B. 
sec-1 
x + C
C. 
sec-1 
x + C
D. 
sin-1 
x + C
Mathematics
Provide an appropriate response.What does the graph of the equation 
look like?
A. A sphere B. A cylinder C. A line D. A plane
Mathematics
Find a rectangular equation for the plane curve defined by the parametric equations.x = sin t, y = 3 cos t
A. x2 + 9y2 = 9 B. 9x2 + y2 = 9 C. 9x2 + y2 = 1 D. x2 + 9y2 = 1
Mathematics
Find the solution set for the system by graphing both of the system's equations in the same rectangular coordinate system and finding points of intersection.
A. {(0, 4), (0, -4)} B. {(4, 0), (-4, 0)} C. {(0, 5), (0, -5)} D. {(5, 0), (-5, 0)}
Mathematics