Solve the equation.1.2x - 4.3 = 0.8x - 1.66
A. 5.94
B. -0.152
C. 6.5
D. 6.6
Answer: D
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Solve the problem.Find the center of mass of the region of constant density bounded by the paraboloid 
and the xy-plane.
A. 
= 0, 
= 0, 
= 
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 
D. 
= 0, 
= 0, 
= 
Find the least common multiple of the pair of polynomials. m2- 2m, m2- 5m+ 6
A. m(m- 2)(m - 3) B. m(m+ 1)(m - 3) C. (m+ 1)2 D. m(m+ 1)2
Solve the problem.If the area of a rectangle is fixed, the length of the rectangle varies inversely as the width. If the length of a rectangle is 25 inches and its width is 45 inches, find the length of a rectangle with a width of 15 inches.
A. 75 inches
B. 
inches
C. 
inches
D. 27 inches
Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (- 4
, 0) and (4
, 0)
vertices at (-8, 0), (8, 0)
B. center at (0, 0)
foci at (0, - 4
) and (0, 4
)
vertices at (0, -8), (0, 8)
C. center at (0, 0)
foci at (0, -8) and (0, 8)
vertices at (0, -64), (0, 64)
D. center at (0, 0)
foci at (0, 8) and (4, 0)
vertices at (0, 64), (16, 0)