Find the sum.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Answer: A
Mathematics
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Solve the equation or inequality.
? 0
A. 
B. ?
C. 
D. 
Mathematics
Solve the inequality. Write the solution in interval notation and graph the solution set.-5x + 5 ? -6x + 10
A. (-?, 5]
B. [5, ?)
C. (15, ?)
D. (-?, 5)
Mathematics
Simplify.i8
A. i B. -1 C. -i D. 1
Mathematics
Suppose a plane is flying in the direction 32° (relative to the west). Its speed with respect to the air is 400 kilometers per hour. The wind at the plane's altitude is from the southwest at 40 kilometers per hour (see figure). What is its speed with respect to the ground? Round your answer to one decimal place.
?
?
, 
?
A. 786.9 km/hr
B. 392.9 km/hr
C. 391.1 km/hr
D. 623.0 km/hr
E. 402.94 km/hr
Mathematics