Add or subtract as indicated. Simplify, if necessary.- 
+ 
A. 
B. - 
C. 
D. - 
Answer: D
Mathematics
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Find the length of the indicated portion of the trajectory.r(t) = (3 + 2t)i + (7 + 3t)j + (5 - 6t)k, -1 ? t ? 0
A. 5 B. 8 C. 9 D. 7
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Divide.
A. 28 R 19 B. 31 R 5 C. 31 R 40 D. 28
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Solve using Cramer's rule, if possible. If it is not possible, state whether the system is inconsistent or has infinitely many solutions.
A. (5, 4) B. (-5, -4) C. (4, 5) D. (-4, 5)
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Solve the equation.16x - 1 = 323x
A. 
B. 
C. 
D. 
Mathematics