Find the length of the indicated portion of the curve.r(t) = (4cos t)i + (4sin t)j + 5tk, 0 ? t ? ?/2
A. 
?
B. 
?
C. 
?
D. 
?
Answer: C
Mathematics
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Solve the problem.Which of the following [A), B), C), or D)] can never be a negative number?
A. the median of a data set B. the mean of a data set C. the maximum value of a data set D. the standard deviation of a data set E. all of these can be negative numbers.
Mathematics
Replace the ? with the symbol <, >, or =.|3| ? |-25|
A. = B. > C. <
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Find the degree of the polynomial.-15x4 + 2x3 + 2x - 4x5 - 3
A. degree 5 B. degree 3 C. degree -15 D. degree 4
Mathematics