Factor completely.4x2 - 25
A. prime
B. (2x + 5)2
C. (2x - 5)2
D. (2x + 5)(2x - 5)
Answer: D
Mathematics
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Simplify the radical.
A. - 
B. - 
C. -2
D. 
Mathematics
Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 94 feet. The height of the arch 27 feet from the center is to be 5 feet. Find the height of the arch at its center.
A. 27.15 feet B. 5.22 feet C. 6.11 feet D. 8.7 feet
Mathematics
Solve the system by the substitution or elimination method.
A. 
B. 
C. 
D. 
E. 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 3x2y
B. 9x2y
C. 63xy
D. 3x4y2
Mathematics