Express the sum or difference as a product of sines and/or cosines.cos (3?) - cos (5?)
A. 2 sin (4?) sin ?
B. -2 cos (4?) sin ?
C. cos (-2?)
D. -2 sin (4?) sin ?
Answer: A
Mathematics
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Subtract.(5n7 + 12n6 - 9) - (8n6 + 3n7 + 8)
A. -11n13 B. 2n7 + 4n6 - 17 C. 2n7 + 15n6 - 1 D. 2n7 + 4n6 - 1
Mathematics
Write the expression in interval notation. Graph the interval.-4 ? x
A. (-4, ?)
B. (-?, -4]
C. [-4, ?)
D. [-?, -4)
Mathematics
Express the number as a decimal.
?
?
A. 
B. 
C. 
D. 
E. ?
Mathematics
Write a numerical expression for the phrase and simplify it.Two-ninths of the difference between -3 and -12.
A. 2(9) [(-3) - (-12)]; 162
B. 
+ [(-3) - (-12)]; 6
C. 2(9) [(-3) - (-12)]; 2
D. 
[(-3) - (-12)]; 2
Mathematics