Write the number in scientific notation.0.00038
A. 38 × 10-3
B. 3.8 × 10-3
C. 3.8 × 10-5
D. 3.8 × 10-4
Answer: D
Mathematics
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Find the length of the indicated portion of the trajectory.r(t) = (2cos t)i + (2sin t)j + 7tk, 0 ? t ? ?/2
A. 
?
B. 
?
C. 
?
D. 
?
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Find the area of the figure using determinants.
A. 12.5 B. 11.5 C. 11.0 D. 12.0
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Solve the problem.The motion of a spring-mass system is described by the equation 
where y is the distance in feet from the equilibrium position and t is time in seconds. If the weight is 22 feet from the ceiling in a state of equilibrium, find the distance from the ceiling at time t = 3.
A. 28 ft B. 30 ft C. 34 ft D. 32 ft
Mathematics
Use the definition of inverses to determine whether f and g are inverses.f(x) = 5x - 5, g(x) = 
x + 1
A. Yes B. No
Mathematics