Convert the radical expression to its rational exponent form and then simplify. Assume that all variables represent positive numbers.
? 
A. x10/20
B. x20/10
C. x7/9
D. x33/20
Answer: D
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Graph the given equation, indicating vertices, foci, and asymptotes (if it is a hyperbola).
+ 
= 1
A. 
Vertices: (±10, 0); Foci (±6, 0)
B. 
Vertices: (0, ±10); Foci (0, ±6)
C. 
Vertices: (±8, 0); Foci: (±10, 0)
D. 
Vertices: (0, ±10); Foci (±6, 0)
Find an equivalent algebraic expression for the given composition.tan(arccos(x))
A. 
B. 
C. 
D. - 
Solve.How long a bolt is needed to go through tubing 
in. long, a washer 
in. thick, and a nut 
in. thick? Reduce the answer to lowest terms.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Which of the following are symmetries of the letter Z?
A. a reflection with axis a vertical line B. a 180° rotation C. a reflection with axis a horizontal line D. a reflection with axis a diagonal line E. none of these