Identify the reciprocal if possible.9
A. Undefined
B. 
C. 1
D. 9
Answer: B
Mathematics
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Solve the proportion equation.
= 
A. 
B. 2
C. 7
D. 
Mathematics
Graph the function as a solid curve and its inverse as a dashed curve.f(x) = 
x + 5
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations by the substitution method.
A. (0, 8) B. (5, -7) C. infinite number of solutions D. no solution
Mathematics
Find the exact value of the trigonometric expression without the use of a calculator.If sin ? = 
, 0 < ? < 
and cos ? = 
, 0 < ? < 
, find the exact value of tan (? + ?).
A. 
B. - 
C. - 
D. 
Mathematics