Simplify the expression. Assume all variables represent positive real numbers.
A. x
B. 4x
C. 
D. 
Answer: C
Mathematics
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Simplify the fraction.
A. 
B. 
C. 
D. 
Mathematics
For an election with four candidates (A, B, C, and D) we have the following preference schedule:
Using the plurality-with-elimination method, which candidate wins the election?
A. A B. B C. C D. D E. none of these
Mathematics
State the domain and range of the one-to-one functions f and f-1.f(x) = 
A. f(x): domain (-?, ?), range (-?, ?);
f-1(x): domain (-?, ?), range (-?, ?)
B. f(x): domain 
? 
, range 
? 
;
f-1(x): domain 
? 
, range 
? 
C. f(x): domain 
? 
, range (-?, 1) ? (1, ?);
f-1(x): domain (-?, 1) ? (1, ?), range 
? 
D. f(x): domain 
? 
, range (-?, 0) ? (0, ?);
f-1(x): range (-?, 0) ? (0, ?), range 
? 
Mathematics
Determine if matrix A is invertible.A = 
A. Invertible B. Not invertible
Mathematics