Find the angle ? between the given vectors to the nearest tenth of a degree.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
saddle point; 
saddle point
B. 
local maximum; 
local minimum
C. 
local minimum
D. 
local maximum
Mathematics
Solve the problem.In a chemistry class, 9 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 4.5 liters B. 5.5 liters C. 9 liters D. 3.5 liters
Mathematics
Find the area of the shaded region.
A. 
B. 32
C. 
D. 
Mathematics
Solve the problem.For the given stock investment, find the capital gain:
A. $6000 B. $15 C. $2250 D. $2700
Mathematics