Multiply. Simplify the final answer. ? 

A.
B.  
C.  
D.  


Answer: B

Mathematics

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Which of the following points represents a 90?counter-clockwise rotation of a line with end-points: (1, 2) and (–8, 9)?  ?

A. ?(–2, 1) and (–9, –8)  B. (–2, –1) and (–9, 8) C. ??(1, –1) and (–8, 8) D. ??(1, –1) and (–9, 9) E. None of the above.

Mathematics

Write as a percent.0.0068

A. 0.34% B. 0.068% C. 0.00068% D. 0.68%

Mathematics

Determine whether or not the graph is a graph of a function of x.

A. Function B. Not a function

Mathematics

Find the unit tangent vector of the given curve.r(t) = (8 + 2t8)i + (6 + 10t8)j + (4 + 11t8)k 

A. T = i + j + k
B. T = i + j + k
C. T = 2i + 10j + 11k
D. T = i + j + k

Mathematics