Find the limit.
e-x2 - y2
A. e8
B. e-8
C. 1
D. 0
Answer: B
Mathematics
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Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Mathematics
Provide an appropriate response.In what quadrant of the xy-plane does P(-7, 4) lie?
A. II B. I C. IV D. III
Mathematics
Find the area of the sector formed by central angle 
in a circle of radius 
m.
?
A. 2.89 m2 B. 2.81 m2 C. 2.91 m2 D. 2.79 m2 E. 2.83 m2
Mathematics
Solve the inequality and give the solution set.|x + 9| ? 0
A. {t|9 ? x ? -9}
B. {9}
C. 
D. {-9}
Mathematics