Solve the system.

(a) x = -0.25, y = 3.5

Mathematics

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Simplify.

A.  
B. - 
C.  
D.  

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Mathematics

Use a graphing calculator to solve the system by finding  A-1 and  A-1B. (Round to the nearest integer if necessary.)-4x + 3y -  z = -12  x + 2y - 2z = 4-8x +  y +  z = -28

A. {(2, 2, 2)} B. {(4, -2, -2)} C. {(5, 0, 2)} D. {(4, 2, 2)}

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Mathematics

Rewrite the following number using digits.Seventy-five billion, two hundred eight million, six hundred eighty-two thousand, nine hundred eighteen

A. 75,000,208,682,918 B. 75,280,682,918 C. 75,208,682,918 D. 750,208,682,918

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Mathematics

Perform the indicated operation. + 

A. 7t3
B. 7t4
C. 7t3
D. 12t3

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Mathematics