Find the exact value of y, or state that y is undefined.y = cos-1 
A. 
B. 
C. - 
D. 
Answer: B
Mathematics
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Factor: 2a2 + 8a + 6
a. 2a(a + 8) b. 2(a2 + 8a + 16) c. 2(a2 + 4a + 6) c e. 2a(a + 6)
Mathematics
Factor the expression completely. If the polynomial is prime, state this as your answer.
x2 + 
x + 49
A. 
B. 
2
C. 
2
D. prime
Mathematics
Find the center of the hyperbola. 25(x - 5)2 - 16(y + 2)2 = 400
A. (9, -2) B. (5, -2) C. (-5, 2) D. (-2, 5)
Mathematics
Solve the equation.24n2 + 12n = 0
A. - 
, 0
B. 0
C. - 
D. - 
, 12
Mathematics