Write the augmented matrix for the system. 2x + 3z = 5 4y + 8z = 12 9x + 5y + 5z = 56
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the focus and directrix of the parabola.x2 = 4y
A. (1, 0); y = 1 B. (1, 0); x = 1 C. (0, -1); x = - 1 D. (0, 1); y = -1
Mathematics
Solve the equation or inequality.|7x - 9| - 2 > -5
A. 
B. ?
C. (-?, ?)
D. 
Mathematics
Add:
6 /45è 12 /30è a. 9 /37.5è b. 9 /75è c. 18 /75è d. 25 /35.7è e. 18 /35.7è
Mathematics
Solve the equation by factoring.9x2 - 12x + 4 = 0
A. 
B. 
C. 
D. 
Mathematics