Factor the four-term polynomial by grouping.15a3 + 20a2b - 18ab2 - 24b3
A. (5a2 - 6b2)(3a + 4b)
B. (15a2 - 6b2)(a + 4b)
C. (5a2 - 6b)(3a + 4b)
D. (5a2 + 6b2)(3a - 4b)
Answer: A
Mathematics
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A. 
(10 - j)
B. 
(j - 10)
C. 
(10 + j)
D. 
(j - 10)
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Find the coordinates of the centroid of the given figure. Each region is covered by a thin, flat plate.The region bounded by the parabola y = 16 - x2 and the x-axis
A. 
B. 
C. 
D. 
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Find the standard deviation for the following set of numbers:
7, 15, 12, 14, 12, 9, 10, 8 a. 12.02 b. 10.89 c. 2.66 d. 4.49
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Rewrite the logarithmic equation 
in exponential form.
A. 
B. 
C. 
D. 
E. 
Mathematics