Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes
B. Yes; no
C. No
Answer: A
Mathematics
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Use the periodic compound interest formula to solve the problem.Letitia borrows $2500 at a rate of 9.5% compounded quarterly. Find how much Letitia owes at the end of 3 years. Round to the nearest cent.
A. $30,712.50 B. $2682.39 C. $3313.35 D. $3644.68
Mathematics
Graph the parabola described.Vertex at (0, 0); Focus at (0, 4)
A. 
B. 
C. 
D. 
Mathematics
Estimate. Then find the actual difference.0.2001 - 0.01275
A. Estimate: 0.19; Actual: 0.18835 B. Estimate: 0.09; Actual: 0.18735 C. Estimate: 0.19; Actual: 0.18735 D. Estimate: 0.09; Actual: 0.087
Mathematics
A card is drawn and replaced three times from a deck of 52 cards. What is the probability of getting 3 aces?
A. 
B. 
C. 
D. 
E. 
Mathematics