Find the LCD for the list of rational expressions.
, 
A. r(r + 3)
B. r(r + 1)(r + 3)
C. (r + 3)2
D. r(r + 3)2
Answer: D
Mathematics
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Solve the problem.Find the moment of inertia about the y-axis of the thin infinite region of constant density 
in the first quadrant bounded by the coordinate axes and the curve 
.
A. 
B. 
C. 
D. 
Mathematics
Write an equation for the parabola with vertex at the origin.Through (
, 7), opening upward
A. y = 7x2
B. x = y2
C. x = 
y2
D. y = x2
Mathematics
Find the measure of the indicated angle. Figure is not drawn to scale.m 
n
Find the measure of ?h.
A. 163° B. 173° C. 73° D. 107°
Mathematics
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Mathematics