Write the augmented matrix for the system of equations. 2x + 6y + 9z= 66 7x + 6y + 8z= 77 9x + 8y - 2z= 51
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Evaluate the improper integral or state that it is divergent.
A. Divergent B. -1.4444 C. -4.667 D. 0.3333
Mathematics
Find the exact value, given that 
with ? in 
and 
with ? in 
sin (? - ?)
A. 
B. 
C. 
D. 
Mathematics
Solve.A church has 7 bells in its bell tower. Before each church service 4 bells are rung in sequence. No bell is rung more than once. How many sequences are there?
A. 35 B. 840 C. 210 D. 420
Mathematics
Solve the problem.The stock market gained 59 points on Tuesday and lost 41 points on Wednesday. It had closed on Monday at 2690 points. Where did the market close on Wednesday?
A. 2590 points B. 2708 points C. 2672 points D. 2790 points
Mathematics