Write the augmented matrix for the system.7x + 3z = 224y + 4z = 325x + 5y + 6z = 50
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.Below is a floor plan of a suite of offices. Place a door in one of the rooms so that a security guard can enter by the door marked "enter", pass through each door and lock it behind him, and then exit by the door you have placed in the plan. 
A. Place door in room E. B. Place door in room D. C. Place door in room A. D. Place door in room B.
Use divisibility rules to determine whether the given number is divisible by 2, 3, 5, or any combination of these.26,400
A. 2, 5 B. 2, 3, 5 C. 5 D. 2
Find the mean, median, and mode of the list of numbers.24, 32, 40, 41, 47
A. mean: 36.8; median: 40; no mode B. mean: 40; median: 41; no mode C. mean: 36.8; median: 40.5; mode: 40 D. mean: 36.8; no median; mode: 36
Give the answer to the question. Let k be a natural number. ? Is ( - 5 ) 2k + 1 positive or negative? ?
A. positive B. undefinable number C. negative