Find the missing measurement in the figure.
a = 1.36 in. b = 1.36 in. c = 5.4 in.
A. z = 2.68 in.
B. z = 3.68 in.
C. z = 4.04 in.
D. z = 1.78 in.
Answer: A
Mathematics
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, B = 
A. 
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Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.
A. (-2, 2, -5) B. (-2, -5, 2) C. no solution D. (2, -5, -2)
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Solve.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 26 ft and the vertical clearance must be 13 ft at a point 21 ft from the center. Find an equation for the ellipse.
A. 
+ 
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B. 
+ 
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C. 
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