For a quadrilateral to be a rectangle, how must the diagonals be related?
A. perpendicular
B. congruent
C. bisect each other
D. congruent and bisect each other
Answer: D
Mathematics
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Graph the function.f(x) = x2 + 
A. 
B. 
C. 
D. 
Mathematics
Factor by grouping.x3 - 2x2 + 9x - 18
A. (x + 9)(x2 - 2x)(x - 2) B. x(x2 - 2x + 9) - 18 C. (x2 + 9)(x - 2) D. (x2 - 2x) + 9(x - 2)
Mathematics
Multiply and simplify.
? 4b
A. 
B. 7b
C. 
b
D. 
Mathematics
Solve the problem.The following data represent the marital status of females 18 years and older in a certain U.S. city. 
Determine the number of females 18 years old and older who are married or widowed.
A. 431,000 B. 373,000 C. 366,000 D. 308,000
Mathematics