Solve the problem.A bridge is built in the shape of a parabolic arch. The bridge arch has a span of 158 feet and a maximum height of 30 feet. Find the height of the arch at 20 feet from its center.
A. 7.7 ft
B. 28.1 ft
C. 0.5 ft
D. 35.1 ft
Answer: B
Mathematics
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A. 12
B. 
C. 3
D. 
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?
What will be an ideal response?
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A. 7 hr B. 8 hr C. 3 hr D. 2 hr
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Solve the problem.If a polygon, of n sides has 
n(n - 3) diagonals, how many sides will a polygon with 779 diagonals have?
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Mathematics