Solve the system of linear equations.
?

A. ?
B. ?
C. ?
D. inconsistent
E. ?


Answer: B

Mathematics

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Find the exact function value.cos-1(0)

A.
B.
C. 0
D.

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Simplify the expression. If any variables are present, assume that they are positive. ? 

A. -20
B. 12
C. -12
D. 20

Mathematics

Write standard form and identify a, b, and c.2x2 = 5x - 4

A. 2x2 + 5x - 4 = 0; a = 2, b = 5, c = -4 B. 2x2 - 5x + 4 = 0; a = 2, b = -5, c = 4 C. 2x2 + 5x + 4 = 0; a = 2, b = -5, c = -4 D. 2x2 - 5x = -4; a = 2, b = -5, c = -4

Mathematics

Write as a proportion.18 is to 24 as 6 is to 8.

A.   =  
B.   =  
C.   =  
D.   =  

Mathematics