Evaluate the determinant.

A. 7x2 - 4x
B. 7x2 + 4x
C. -7x2 + 4x
D. -7x2 - 4x


Answer: C

Mathematics

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A.
B.
C.
D.

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Find the missing complex number.(2 - 3i)(?) = 9 + 4i

A. -  + 7i
B.  + i
C. - 6 + 7i
D.  + i

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Simplify by factoring.

A. 2x2
B. 2xy2
C. 2xy
D. 2x

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Find the magnitude R of an earthquake of intensity . ? ?

A. 7.43 B. 6.43 C. 8.43 D. 10.43 E. 9.43

Mathematics