Find the center and radius of the circle by completing the square.x2 + y2 - 10x - 8y + 16 = 0
A. (5, 4); r = 5
B. (-5, -4); r = 25
C. (-4, -5); r = 25
D. (4, 5); r = 5
Answer: A
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Solve.An elliptical riding path is to be built on a rectangular piece of property that measures 10 mi by 8 mi. Find an equation for the ellipse if the path is to touch the center of the property line on all 4 sides.A = 10 miB = 8 mi 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them.3x + y + z = 1512x + 4y + 4z = 60
A. x = 0, y = 15, z = 0 B. Unlimited: x = 0, y = 15, z = 0; x = 5, y = 0, z = 0 C. Inconsistent D. x = 5, y = 0, z = 0
Find the perimeter of the specified triangle. Assume the triangles are similar.Find the perimeter of the triangle on the right.
A. 223.5 m B. 218.5 m C. 176.9 m D. 158.8 m
Solve.|5x - 8| = |4x - 11|
A. 
B. 
C. 
D. 