Find the exact value of the expression.sin 220° cos 100° - cos 220° sin 100°
A. - 
B. - 
C. 
D. - 
Answer: C
Mathematics
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Find the value of the expression.2(-27) + 25(-13)
A. -379 B. 1352 C. 379 D. 67
Mathematics
Find the following. Assume that letters can represent any real number.
A. 
B. 
C. 
D. a + b
Mathematics
Solve the problem.The line segment that is the intersection of any two faces of a polyhedron is called a(n) 
.
A. polyhedron B. vertex C. edge D. face
Mathematics
Multiply.(n + 10)2
A. n2 + 100 B. 100n2 + 20n + 100 C. n + 100 D. n2 + 20n + 100
Mathematics