Evaluate the expression. 
A. 
B. 3024
C. 126
D. 15120
Answer: C
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Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire of constant density that lies along the first-quadrant portion of the circle 
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 0, 
= 
Use the power rules to simplify the expression. Use positive exponents to write the answer.(8x4)-2
A. 
B. -16x4
C. 
D. 64x8
Completely factor the polynomial.6x4 - 24x3- 3x2 + 12x
A. 3x(2x2 - 1)(x - 4) B. 3x(2x2 + 1)(x - 4) C. 3x(2x2 - 1)(x - 12) D. (6x3 - 3x)(x - 4)
A person standing 150 centimeters from a mirror notices that the angle of depression from his eyes to the bottom of the mirror is 14°, while the angle of elevation to the top of the mirror is 12°. Find the vertical dimension of the mirror (see the figure). Round to the nearest degree.
?
?
?
?
A. 79 cm B. 71 cm C. 68 cm D. 69 cm E. 72 cm