Solve the system by the substitution method.2y - x = 5x2 + y2 - 25 = 0
A. 
B. 
C. {(5, 0), (-5, 0), (3, 4)}
D. {(-5, 0), (3, 4)}
Answer: D
Mathematics
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Solve the problem.Evaluate 
at (x, y, z) = (3, 3, 0) for the function u = epq cos(r); p = 
, 
A. 0 B. 1 C. 27 D. 81
Mathematics
Solve.x2 + x + 8 = 0
A. - 
± 
B. 
± 
i
C. - 
± 
i
D. 
± 
Mathematics
Graph the hyperbola.25y2 = 4x2 + 100
A. 
B. 
C. 
D. 
Mathematics
Suppose that ? is in standard position and the given point is on the terminal side of ?. Give the exact value of the indicated trig function for ?.(5, 4); Find tan ?.
A. 
B. 
C. 
D. 
Mathematics