Find the length of the indicated portion of the curve.r(t) = (etcos t)i + (etsin t)j + 7etk, -ln 2 ? t ? 0
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Evaluate the spherical coordinate integral.
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Answer the question.Which of the statements below suggests an appropriate level of precision?
A. According to his bathroom scales, Enrique's weight is 190 lb [to the nearest ten pounds] B. According to his bathroom scales, Enrique's weight is 194 lb. C. According to his bathroom scales, Enrique's weight is 194.1134 lb. D. According to his bathroom scales, Enrique's weight is 194.113 lb.
Mathematics
Combine like terms, if possible.6n3 - 8n3
A. -2n6 B. -2n3 C. 2n3 D. 2n6
Mathematics
Use special right triangles to evaluate the expression.csc 30° - cos 45°
A. 
B. 
C. 
D. 
Mathematics