Factor completely. Make sure you factor out the GCF first if possible. If prime, so state.x2 + 2xy - 15y2
A. (x - 5y)(x + y)
B. (x + 5y)(x - 3y)
C. (x - y)(x + 3y)
D. (x - 5y)(x + 3y)
Answer: B
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 x-axis and the semicircle y = 
A. 
= 
, 
= 0
B. 
= 0, 
= 
C. 
= 
, 
= 
D. 
= 0, 
= 
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Solve the system of linear equations using matrices.
A. (1, 0) B. (1, 1) C. (0, 1) D. (0, 0)
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Divide.
A. 195 B. 20.5 C. 19.5 D. 205
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Write the first four terms of the geometric sequence.a =3, a5 = 48
A. 48, 24, 12, 6 B. 6, 12, 24, 48 C. 3, 6, 12, 24 D. 24, 12, 6, 3
Mathematics