Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Answer: D
Mathematics
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Choose the number that is a solution of the inequality.f + 12 < 21
A. 8 B. 11 C. 12 D. 9
Mathematics
Solve the problem.The period of vibration P for a pendulum varies directly as the square root of the length L. If the period of vibration is 2 sec when the length is 16 inches, what is the period when 
inches?
A. 2.25 sec B. 2.75 sec C. 1 sec D. 2.5 sec
Mathematics
Perform the indicated operations.(2x - 2y)(4x - y)
A. 8x2 - 10xy + 2y B. 6x2 - 10xy + 2y2 C. 6x2 - 7xy + 2y2 D. 8x2 - 10xy + 2y2
Mathematics
Solve the system by any method.
A. {(x, y) 
}
B. (8, 3)
C. (8, 4)
D. (7, 4)
Mathematics