Solve the equation by completing the square. Express any complex numbers using i notation.5x2 + 12x + 4 = -1
A. x = 
B. x = 
C. x = 
D. x = 
Answer: B
Mathematics
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Graph the ellipse. Give the coordinates of the center, as well as the values of a and b.64x2 + y2 - 384x + 512 = 0
A. center (3, 0), a = 1, b = 8
B. center (0, 3), a = 8, b = 1
C. center (3, 0), a = 1, b = 8
D. center (-3, 0), a = 8, b = 1
Mathematics
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.tan 390°
A. 
B. 
C. -
D. 
Mathematics
Graph the inequality.y > 8 
A. 
B. 
C. 
D. 
Mathematics
Find the median for the data given.Newspapers delivered each day: 84, 55, 228, 198, 277, 234, 230
A. 228 newspapers B. 187 newspapers C. 230 newspapers D. 198 newspapers
Mathematics