Multiply using the FOIL method.(x + 3)(x2 + 4)
A. x3 + 3x2 + 4x + 12
B. x2 + 7x + 12
C. x3 + 4x2 + 3x + 12
D. 3x2 + x + 12
Answer: A
Mathematics
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A. 2.613 B. -2.813 C. 2.913 D. 2.813
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by y = x2 and y = 3
A. 
= 0, 
= 5
B. 
= 0, 
= 
C. 
= 0, 
= 
D. 
= 0, 
= 
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Determine the indicated arc or angle.Find 
.
A. 240° B. 180° C. 150° D. Not enough information.
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Find the vertex of the parabola.f(x) = -2x2 - 12x - 23
A. (5, 3) B. (-5, -3) C. (3, 5) D. (-3, -5)
Mathematics