Find the length of the indicated portion of the trajectory.r(t) = (1 + 4t)i + (1 + 7t)j + (2 - 2t)k, -1 ? t ? 0
A. 
B. 
C. 2
D. 
Answer: D
Mathematics
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Find all solutions of the equation in the interval [0, 2?).cos 2x = 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Decide if the system has one solution, no solution, or an infinite number of solutions. 5x - y = 28 x + 2y = 10
A. One Solution B. Infinite number of solutions C. No Solution
Mathematics
Solve the problem.List all the subsets of {1, 2, 3}.
What will be an ideal response?
Mathematics
Provide an appropriate response.Without graphing, explain the differences between the graphs of 
y = (x - 2)2, and y = (x + 2)2.
What will be an ideal response?
Mathematics