Multiply.× 
A. 524.16
B. 525.26
C. 80
D. 524.27
Answer: A
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Use the half-angle formulas to simplify the given expression.
A. 
sin 0.8?
B. 4 sin 0.8?
C. 2 sin 3.2?
D. 4 sin 3.2?
Provide an appropriate response.A small cone has been removed from the top of the original cone. What is the ratio of the volume of the original cone to the volume of the small cone which was removed, given that the radius of the original cone is twice the radius of the small cone? [Hint: Use similar triangles]
A. 8 : 1 B. 8 : 3 C. 4 : 1 D. 2 : 1
Solve the equation by completing the square. k2 + 16k + 64 = 0
A. {± 8} B. {8} C. {-8} D. {-16}
If you changed the following decimal into a fraction and reduced it to lowest terms, what would be its denominator?
?
?
A. 90 B. 9 C. 999 D. 9999 E. 99