Use rational exponents to simplify the radical expression. Write the final answer in radical form when necessary.
A. 
B. 
C. 
D. 7
Answer: B
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Use spherical coordinates to find the volume of the indicated region.the region enclosed by the sphere 
and the cylinder 
A. 
(3? - 4)
B. 
(3? - 4)
C. 
(3? - 4)
D. 
(3? - 4)
Write as a percent.
A. 3% B. 50% C. 0.6% D. 6%
The figure contains two similar triangles. Find the unknown measure indicated by a variable. Round your answer to the nearest tenth.
?
?
Where 
?
A. 
B. 
C. 
D. ?
E. ?
Solve.A plane flying with a tailwind flew at a speed of 420 mph, relative to the ground. When flying against the tailwind, it flew at a speed of 300 mph. Express these relationships as equations. Let x represent the speed of the plane in calm air and let y represent the speed of the wind.
A. x + y = 420 y = 300 B. x + y = 300 x - y = 420 C. x + y = 300 y = 420 D. x + y = 420 x - y = 300