Evaluate the double integral over the given region.
R = {(x, y): 8 ? x ? 9, 8 ? y ? 9}
A. ln 
B. 
2
C. 
D. 
2
Answer: D
Mathematics
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Find Dxy.y = cosh-1 2
A. 
B. 
C. 
D. 
Mathematics
Choose the rational number that is between the two given rational numbers.
and 
A. 
B. 
C. 
D. 
Mathematics
Evaluate.3x2 + 3x - 1 ; x = -4
A. -25 B. 35 C. 31 D. 25
Mathematics
State whether the slope of the line is positive, negative, zero, or undefined.
A. undefined B. negative C. zero D. positive
Mathematics