Evaluate the expression.Let x = -18, y = 12.Evaluate |4y - 5x| - |4y|.

A. 60
B. 36
C. 84
D. 90

Answer: D

Mathematics

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Solve the problem. Round your answer, if appropriate.Water is discharged from a pipeline at a velocity v (in ft/sec) given by  where p is the pressure (in psi). If the water pressure is changing at a rate of  find the acceleration (dv/dt) of the water when 

A. 59.8 ft/sec2 B. 24.9 ft/sec2 C. 153 ft/sec2 D. 969 ft/sec2

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Mathematics

Divide.

A. 25x2 + 25x + 25
B. 25x2 + 25x + 25 + 
C. 25x2 - 25x + 25
D. 25x2 + 25x + 25 + 

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Mathematics

Add. Write the answer in lowest terms.

A. 12
B. 50
C. 95
D. 23

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Mathematics

Find the indicated term of the binomial expansion.Middle two; (3x + 3y)9

A. 2,480,058x5y4 and 2,480,058x4y5 B. 826,686x3y6 and 826,686x6y3 C. 2,480,058x3y6 and 2,480,058x6y3 D. 826,686x5y4 and 826,686x4y5

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Mathematics