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