Simplify the rational expression.
A. 
B. 
C. - 
D. 
Answer: B
Mathematics
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Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + 6y2 = 7x2 - y2 = 1
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. no real solution
Mathematics
Solve the system by the substitution method or the addition method.
A. no solution
B. 
C. (5, 1)
D. infinite number of solutions
Mathematics
Use interval notation to represent all values of x satisfying the given conditions.y = 
- 
- 
and y is at least 0.
A. (-?, -5] B. (-?, -5) C. (-5, ?) D. [-5, ?)
Mathematics
Evaluate without the use of a calculator. csc-1(-1)
A. - 
B. 
C. 2?
D. ?
Mathematics