Evaluate the integral.
A. 7 csch x2 + C
B. 
+ C
C. - 
sech x2 + C
D. 
sech x2 + C
Answer: C
Mathematics
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Evaluate the expression, given x = -2, y = 3, and a = -4.(-5 + x)(7 + y)(9 - a)
A. 910 B. -150 C. -910 D. -350
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Find the indicated limit.
A. 0 B. -1.5 C. 2 D. -2
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Use the substitution method or the elimination method to solve the system. If the system has infinitely many solutions, express the ordered pair in terms of x or y.
x + 
y = 4
x + 
y = 2
A. 
or 
B. (0, 12)
C. 
D. no solution
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Write the percent as a fraction or mixed number in simplest form.24
%
A. 
B. 12
C. 
D. 
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