Add. Write your answer in lowest terms.


Mathematics

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Find the parametric equations for the line tangent to the curve at the given point.r(t) =  at t = 1

A. x = 1 + 8t, y = -6 - 6t, z = 2 + 6t B. x = 1 + t, y = -6, z = 2 + t C. x = 8 + 8t, y =-6 - 6t, z = 7 + 6t D. x =8 + t, y = -6 - 6t, z = 6 + 2t

Mathematics

Add or subtract as indicated.-5.536 + 5.868

A. -11.404 B. 32.485 C. -11.304 D. 0.332

Mathematics

Evaluate. Assume u > 0 when ln u appears. 

A.  + C
B. ln  + C 
C. e ln  + C
D. x + C

Mathematics

Find the domain of the rational expression.

A. {x|x is a real number and x ? 7} B. {x|x is a real number} C. {x|x is a real number and x ? 3} D. {x|x is a real number and x ? 3 and x ? 7}

Mathematics