Factor.169y2 - 36
A. (13y - 6)2
B. (169y - 36)(y + 1)
C. (13y + 6)2
D. (13y - 6)(13y + 6)
Answer: D
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Simplify the expression. Assume all variables represent positive real numbers.
A. 
B. 
C. 5
D. 5
Using either the Law of Sines or Cosines, find side b if a = 16, c = 18, and angle C = 49ø.
a. 12.9 b. 13.8 c. 18.0 d. 20.3 e. 23.8
Find the vertex, focus, and directrix of the parabola with the given equation.(y + 1)2 = 16(x + 2)
A. vertex: (2, 1) focus: (6, 1) directrix: x = -2 B. vertex: (-2, -1) focus: (2, -1) directrix: x = -6 C. vertex: (-2, -1) focus: (-6, -1) directrix: x = 2 D. vertex: (-1, -2) focus: (3, -2) directrix: x = -5
Write a matrix to display the information.Barges from ports X and Y went to cities A and B. Shipping costs $220 from X to A, $300 from X to B, $400 from Y to A, and $180 from Y to B. Make a 2 × 2 matrix showing the shipping costs. Assign the ports to the rows and the cities to the columns.
A. 
B. 
C. 
D. 