Determine whether the matrix is in echelon form, reduced echelon form, or neither.
A. Neither
B. Echelon form
C. Reduced echelon form
Answer: B
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Solve the problem.An express and local train leave GraysLake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train.
A. Express's rate = 25 mph and local's rate = 12.5 mph B. Express's rate = 50 mph and local's rate = 25 mph C. Express's rate = 60 mph and local's rate = 30 mph D. Cannot be determined with information given.
Solve the equation.16x4 - 41x2 + 25 = 0
A. 
B. 
C. 
D. 
The general term of a sequence is given. Determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio.an = 5n2
A. geometric, r = 5
B. arithmetic, d = 5
C. geometric, r = 
D. neither
Solve the system in terms of the arbitrary variable listed.x;5x - y + z = 87x + y + z = 6
A. {(x, -x - 1, -6x + 7)} B. {(x, -x + 1, 6x + 7)} C. {(x, -x + 1, -6x + 7)} D. {(x, -x + 1, 6x - 7)}