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: C
Mathematics
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Find all positive values of u for which the series  Figure 3.png)
converges.
 multiple choice.png)
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Solve the problem.Noah Field decided to sell 260 shares of stock, which decreased in value by $3.50 per share yesterday. How much money did he lose?
A. $256.50 B. $4550 C. $1820 D. $910
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Divide, if possible. Write the answer in simplest form.
÷ 
A. 
B. 5
C. 
D. 
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