Use Cramer's rule to solve the linear system.
A. x = 4, y = -1, z = -3
B. x = 1, y = 3, z = 1
C. x = 4, y = 1, z = 3
D. x = 5, y = -1, z = 3
Answer: C
Mathematics
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A. D2y + 6Dy - 18y = 0 B. D2y + 6Dy + 18y = 0 C. D2y - 6Dy - 18y = 0 D. D2y - 6Dy + 18y = 0
Mathematics
Determine if the matrix is in row-echelon form.
A. No B. Yes
Mathematics
Use ordinary division of polynomials to find the quotient and remainder when the first polynomial is divided by the second.2x4 - x3 - 15x2 + 3x, x + 3
A. 2x3 - 7x2 + 6x - 15; 45 B. 2x3 + 5x2 + 3; 9 C. 2x3 - 7x2 + 6x - 15; - 45 D. 2x3 - 5x2 + 3; 9
Mathematics
Find the LCD.
, 
A. r(r + 5)(r + 1) B. r + 1 C. (r + 1)2 D. r(r + 1)2
Mathematics