Solve for x. = 39

A. 24
B. 3
C. -2
D. 5


Answer: B

Mathematics

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Solve by the substitution method.x + 7y = -222x + 6y = -12

A. {(-6, -3)} B. {(6, -4)} C. {(5, -3)} D. ?

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Solve the problem. Express your answer as an integer or simplified fraction.7x - (5x - 1) = 2

A.
B.
C. - 
D. - 

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Write the expression in the standard form a + bi.(1 + i)20

A. -1024i B. 1024 C. 1024i D. -1024

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Write the number as a product of a real number and i. Simplify the radical expression.

A. -i
B. 13i 
C. ± 13 
D. -13i 

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