Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 102 feet. The height of the arch 27 feet from the center is to be 11 feet. Find the height of the arch at its center.
A. 20.78 ft
B. 27.65 ft
C. 11.41 ft
D. 12.97 ft
Answer: D
Mathematics
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Solve by the quadratic formula. If there are no real roots, say so.
- 
= 
A. No real solution
B. y = 
C. y = 
D. y = - 
, y = 
Mathematics
Solve the equation. Express radicals in simplest form.(x + 16)2 - 2 = 0
A. -4 ± 
B. 16 ± 
C. -16 ± 
D. -14, 18
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Simplify the expression using the order of operations.
A. 3 B. -20 C. 2 D. -2
Mathematics
Use the Pythagorean theorem to find the unknown side of the right triangle.
A. 147
B. 7
C. 7
D. 203
Mathematics