Find the real solutions of the equation.x3/4 - 3x1/4 = 0
A. {
}
B. {2}
C. {0, 9}
D. {0, 81}
Answer: C
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (4 - 2t)i + (2t - 9)j + (10 + t)k
A. T(t) = 
i - 
j - 
k
B. T(t) = - 
i + 
j + 
k
C. T(t) = 
i - 
j - 
k
D. T(t) = - 
i + 
j + 
k
Mathematics
Integrate the given expression.
dx
A. x + 7C
B. -21x + C
C. 7x3 + C
D. - 
+ C
Mathematics
The U.S. population is approximated by the function 
, where P(t) is measured in millions of people and t is measured in 30-year intervals, with t = 0 corresponding to 1930. What is the expected population of the United States in 2020 (t = 3)? Round your answer to one decimal place.
?
__________ million
Fill in the blank(s) with the appropriate word(s).
Mathematics
Provide an appropriate response.What does 61% mean?
A. 61 parts out of 100 parts
B. 0.61
C. 
D. all of these
Mathematics