Factor.125x2 - 20
A. 5(5x + 2)(5x - 2)
B. 5(5x - 2)2
C. 10(5x + 2)(5x - 2)
D. 5(5x + 2)2
Answer: A
Mathematics
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Replace the Cartesian equation with an equivalent polar equation.xy = 1
A. 2r2 sin ? cos ? = 1 B. r sin 2? = 2 C. 2r sin ? cos ? = 1 D. r2 sin 2? = 2
Mathematics
Graph the curve over the given interval together with its tangent at the given value of x. Graph the tangent with a dashed line.y = cot(x), -2? ? x ? 2?, x = 
A. 
B. 
C. 
D. 
Mathematics
Find the center of mass of a thin plate of constant density covering the given region.The region in the first and fourth quadrants enclosed by the curves 
and 
and by the lines 
and 
A. 
= 
, 
= 0
B. 
= 
, 
= 0
C. 
= 0, 
= 
D. 
= 
, 
= 0
Mathematics
Perform the indicated operations and simplify.0.62 + 0.72 + 0.3
A. 1.99 B. 1.15 C. 5.5 D. 2.9
Mathematics