Write the augmented matrix for the system. 7x + 2y + 6z = 71 8x + 3y + 8z = 83-2x + 5y + 2z = -11
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the multiplicative inverse of the number.-23
A. 23
B. 
C. 1
D. - 
Mathematics
Solve the problem.A square plywood platform has a perimeter which is 10 times the length of a side, decreased by 24. Find the length of a side. 
A. 4 B. 1 C. 10 D. 6
Mathematics
Solve the equation by clearing the constant.13 = k - 3
A. k = 16 B. k = -10 C. k = 10 D. k = -16
Mathematics
Compute the value of the given expression.
A. -18 B. -24 C. 24 D. 18
Mathematics