Solve.A carpenter wants to cut the largest possible ellipse from a 8 ft by 10 ft rectangular board. After the foci are located, a string is connected to them and pulled taut by a pencil in order to draw the ellipse. Find the length of the string.
A. 8 ft
B. 20 ft
C. 10 ft
D. 16 ft
Answer: C
Mathematics
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Find the perimeter of the figure.
A. 
cm
B. 
cm
C. 
cm
D. 
cm
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Find the composition. If f(x) = x2 + 6x and g(x) = x + 3, find ( f ? g)(3)
A. 6
B. 0
C. 72
D. 30
Mathematics
Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set.-4x + 3z = 16-5x + 6y - 8z = -62 2x - 4y = -4
A. {(2, 8, 2)} B. {(2, -2, -8)} C. ({3, 0, 8)} D. {(2, 2, 8)}
Mathematics
Find the slope of the line.y = 4x + 8
A. - 
B. 4
C. 
D. 8
Mathematics