The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = 
A. y2 = 10x - 25
B. y2 = 25 - 10x
C. x2 = 10y - 25
D. x2 = 25 - 10y
Answer: B
Mathematics
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Find the integral.
A. 4e B. e - 1 C. 4e - 1 D. e
Mathematics
Find the center of mass of a thin plate covering the given region with the given density function.The region bounded below by the parabola 
and above by the line 
, with density 
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics
Graph the equation by plotting points.y = x - 5
A. 
B. 
C. 
D. 
Mathematics
Evaluate the sum.
A. 23 B. 12 C. 42 D. 21
Mathematics