Simplify. ? 

A. 2
B.
C.
D. 4


Answer: A

Mathematics

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Find the length of the curve.The curve r = 5 sin3 , 0 ? ? ? 

A. (5? - 8)
B. (2? - 3)
C. (5? - 9)
D. (3 - ?)

Mathematics

Solve the problem.Find the volume of the solid that is generated by revolving the area bounded by    and  about the x-axis.

A. ? ln (2)
B. ? ln (2)
C. ? ln (11)
D. ? ln (11)

Mathematics

Write the decimal as a percent.0.011

A. 0.0011% B. 11% C. 1.1% D. 0.11%

Mathematics

Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.x2 + xy + y2 - 3y - 6 = 0

A. ? = 45°
y'2 = -18x'
parabola
vertex at (0, 0)
focus at (- , 0)
B. ? = 45°
 -  = 1
hyperbola
center at (0, 0)
transverse axis is the x'-axis
vertices at (±, 0)
C. ? = 45°
 +  = 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±2)
D. ? = 45°
 +  = 1
ellipse
center at ()
major axis is y'-axis
vertices at (, - ) and ()

Mathematics