Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. 5x - y + z = 8 7x + y + z = 6
A. {(-z + 3, 4z + 7, z)}
B. {(- 
z + 
, 
z - 
, z)}
C. {(
z + 
, 
z, z)}
D. ?
Answer: B
Mathematics
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Use the information below to determine the cardinality of the set. U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z}n(U)
A. 10 B. 19 C. 5 D. 9
Mathematics
If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.125-4/3
A. 
B. - 
C. 625
D. -625
Mathematics
Solve the system analytically. x - y + 4z = 16-2x + 2y - 8z = 3 x + 2y + z = 11
A. ? B. {(3, 0, 4)} C. {(3, 4, 0)} D. {(0, 4, 3)}
Mathematics
Solve the problem.Let C = 900 + 40x be the cost to manufacture x items. Find the average cost per item to produce 30 items.
A. $1253 B. $70 C. $705 D. $698
Mathematics