Use a sum or difference identity to find the exact value.sin 
cos 
- cos 
sin 
A. 
B. 
C. 1
D. 
Answer: B
Mathematics
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Write in exponential form.log1/4256 = -4
A. 
4 = 256
B. 
-4 = 256
C. (-4)1/4 = 256
D. 2561/4 = 4
Mathematics
A woman walks due west on the deck of a ship at 6 mi/h. The ship is moving north at a speed of 21 mi/h. Find the speed of the woman relative to the surface of the water. Round the result to the nearest tenth.
What will be an ideal response?
Mathematics
Solve. 
+ 5 = 15
A. 9 B. 29 C. 5009 D. 10,018
Mathematics
For the given function f(x), find f-1(x).f(x) = 
A. Not one-to-one
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Mathematics