Find the indicated sum of matrices. 
+ 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Evaluate the improper integral or state that it diverges.
A. 1.6667 B. 2.6667 C. 1.3333 D. diverges
Mathematics
List the degree of each term and the degree of the polynomial.x8yz - x10y2 - 2x7y2z3
A. 8, 12, 12; polynomial: 12 B. 8, 12, 12; polynomial: 8 C. 10, 12, 12; polynomial: 12 D. 10, 12, 12; polynomial: 10
Mathematics
Write in terms of the cofunction of a complementary angle.tan 123°20'
A. cot 32°40' B. cot -33°20' C. tan -33°40' D. cot 33°40'
Mathematics
Factor by grouping.12x2 - 20xy + 15xy - 25y2
A. (4x + 5y)(3x - 5y) B. (12x + 5y)(x - 5y) C. (4x + 5)(3x - 5) D. (4x - 5y)(3x - 5y)
Mathematics