Multiply the pair of monomials.(-2x5)(-4x3)
A. -8x15
B. -6x15
C. 8x8
D. -6x8
Answer: C
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the parabola x = y2 and the line x = 16
A. 
= 
, 
= 0
B. 
= 16, 
= 0
C. 
= 0, 
= 
D. 
= 
, 
= 0
Mathematics
Use identities to write each expression as a function of ?.cos (? - ?)
A. -sin ? B. -cos ? C. cos ? D. sin ?
Mathematics
Simplify the expression by combining like terms.4ab + 7ab - 35ab
A. 24ab
B. 
ab
C. 
a2b2
D. 24a2b2
Mathematics
Find the vertex of the parabola.f(x) = -2x2 - 16x - 25
A. (-4, 7) B. (0, -25) C. (-4, -7) D. (4, 7)
Mathematics