Express the number as the ratio of two integers.0.818181 . . .
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the average value of the function f over the region R.f(x, y) = ex2R is the region bounded by 
, 
, 
, and 
.
A. e - 1
B. 
C. 2e - 1
D. 
Mathematics
Find the center of the hyperbola. 16(x + 3)2 - 25(y + 1)2 = 400
A. (2, -1) B. (-1, -3) C. (3, 1) D. (-3, -1)
Mathematics
Evaluate:
Mathematics
Calculate.25 + 13 + (-20)
A. 58 B. -8 C. 18 D. 32
Mathematics