Find the center of mass of a thin plate covering the given region with the given density function.The region between the x-axis and the curve y = 
, 1 ? x ? 2, with density ?(x) = 
A. 
= 
, 
= 
B. 
= 
, 
= 1
C. 
= 
, 
= 
D. 
= 
, 
= 
Answer: D
Mathematics
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Identify the quadrant for the angle ? satisfying the following conditions.tan ? < 0 and sin ? < 0
A. Quadrant I B. Quadrant III C. Quadrant IV D. Quadrant II
Mathematics
Test the equation for symmetry with respect to the given axis, line, or pole.r = 2 - 2 cos ?;
polar axis
A. has symmetry with respect to the polar axis B. may or may not have symmetry with respect to the polar axis
Mathematics
Determine whether the expression is a polynomial. If it is, state how many terms and variables the polynomial contains. Then state its degree.x + 
A. No B. Yes; 1; 1; 1 C. Yes; 2; 1; -1 D. Yes; 2; 1; 1
Mathematics
Evaluate by finding the least common denominator. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics