Find the open interval on which the curve given by the vector-valued function 
is smooth.
?
A. 
B. 
C. 
D. 
E. 
Answer: D
Mathematics
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Which method should be used to solve the system? Explain your answer, including a description of the first step. x2 - 3y2 = 497x2 - 7y2 = 9
What will be an ideal response?
Mathematics
Graph the inequality.(x - 4)2 + (y + 3)2 ? 16
A. 
B. 
C. 
D. 
Mathematics
Find the LCM of the expressions.7a3b, b2c, ac2
A. 7a4b3c3 B. 7 C. 7a3b2c2 D. 7a2b2c3
Mathematics
Perform the indicated operations and, if possible, simplify.
÷ 
? 
A. 
B. r + s
C. 
D. r - s
Mathematics