Multiply.
A. 508
B. 408
C. 368
D. 374
Answer: B
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Solve the system of equations using the inverse of the coefficient matrix.2x + y + 4z - w = 15 -x + 2y + z - 3w = 17 2x + 4y + 2z + w = 9 4x - y - z - 3w = 0
A. No solution B. x = -3, y = 3, z = 4, w = -5 C. x = -1, y = 2, z = 3, w = -3 D. x = -1, y = -2, z = -3, w = 3
Solve the problem.Helen Weller invested $13,000 in an account that pays 3% simple interest. How much additional money must be invested in an account that pays 6% simple interest so that the average return on the two investments amounts to 4%?
A. $13,000 B. $10,000 C. $9000 D. $6500
Determine convergence or divergence of the alternating series.
A. Converges B. Diverges
Solve the system of equations. x + y + z = 1 x - y + 4z = -132x + y + z = 5
A. (4, 1, -4) B. (-4, 4, 1) C. (1, 4, -4) D. (-4, 1, 4)