The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using back-substitution.
A. {(5, -2)}
B. ?
C. {(6, 2)}
D. {(2, 6)}
Answer: C
Mathematics
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Solve the problem.A woman borrowed $10,000 at 14% interest compounded annually. If the loan was paid off at the end of 4 years, how much did she pay? Round to the nearest cent.
A. $15,600.00 B. $6889.60 C. $16,889.60 D. $11,400.00
Mathematics
Find the distance (correct to two decimal places) between the given parallel planes. Select the correct answer.
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Mathematics
Factor completely. If the polynomial is prime, say so.81x2 - 49
A. Prime B. (9x - 7)2 C. (9x + 7)2 D. (9x + 7)(9x - 7)
Mathematics
Divide.
A. 
- 
+ 
B. 8x2 - 8x + 64
C. 
- 
+ 
D. 8x - 8 + 
Mathematics