Combine like terms.5xy - 11x - 7xy + 16x

A. 5x - 14xy
B. 19x - 2xy
C. 5x + 2xy
D. 5x - 2xy


Answer: D

Mathematics

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Write the imaginary number in terms of i.

A. -9
B. 9i
C. 9
D. -9i

Mathematics

Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.

A. -112
B.
C. 112
D.

Mathematics

The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).xy = 1

A. 2r sin ? cos ? = 1 B. 2r2 sin ? cos ? = 1 C. r2 sin 2? = 2 D. r sin 2? = 2

Mathematics

Verify that the matrix is invertible and find its inverse.A = 

A. A-1 = 

B. A-1 = 

C. A-1 = 

D. A-1 = 

Mathematics