Find the indicated sum or difference, if it is defined.
+ 
A. 
B. not defined
C. 
D. 
Answer: B
Mathematics
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Solve the problem.A twin-engined aircraft can fly 960 miles from city A to city B in 4 hours with the wind and make the return trip in 6 hours against the wind. What is the speed of the wind?
A. 60 mph B. 80 mph C. 20 mph D. 40 mph
Mathematics
Find the exact value by using a half-angle identity.sin 75°
A. - 
B. - 
C. 
D. 
Mathematics
Write the improper fraction as a mixed or whole number.
A. 16
B. 20
C. 20
D. 20
Mathematics
Subtract.- 
A. 4241.59011 B. 4241.58911 C. 4241.58921 D. 4241.58912
Mathematics