Write the augmented matrix for the system.-2x + 4z = 2 3y + 6z = 45 5x + 3y + 5z = 67
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find a cofunction with the same value as the given expression.csc 
A. csc 
B. sec 
C. csc 
D. cot 
Mathematics
Round the whole number to its highest place value.8178
A. 8100 B. 8000 C. 7900 D. 9000
Mathematics
Solve the problem.An average score of 90 for 5 exams is needed for a final grade of A. John's first 4 exam grades are 79, 89, 97, and 95. What range of scores on the fifth (and last) 100-point exam will guarantee John an A in the course?
A. 90 to 100 B. 95 to 100 C. 99 to 100 D. 85 to 100
Mathematics
Solve and graph the inequality and graph the solution.12z + 4 ? 11z + 15
A. (-?, 11]
B. (12, ?)
C. [11, ?)
D. (-?, 12)
Mathematics