A. x+2y+3z $-$9 = 0

B. x+2y+3z $-$13 = 0

C. x+2y+3z+5 = 0

D. x+2y+3z+13 = 0

A. 4

B. 2

C. -3

D. -5

A. $\stackrel{\to }{n_1}$(2;-3;4).

B.  $\stackrel{\to }{n_1}$(1;2;-3).

C.  $\stackrel{\to }{n_1}$(1;2;3).

D.  $\stackrel{\to }{n_1}$(1;-2;3).

A.  $\sqrt{3}$

B. 1

C. 3

D.  $\frac{1}{\sqrt{3}}$

A.  $\left(S\right): {\left(x+2\right)}^2+{\left(y+4\right)}^2+{\left(z+3\right)}^2=1$

B. $\left(S\right): {\left(x-2\right)}^2+{\left(y-4\right)}^2+{\left(z-3\right)}^2=6$

C. $\left(S\right): {\left(x-2\right)}^2+{\left(y-4\right)}^2+{\left(z-3\right)}^2=\frac{2}{7}$

D. $\left(S\right): {\left(x-2\right)}^2+{\left(y+4\right)}^2+{\left(z+4\right)}^2=8$

A.  $\left\{\begin{array}{l}x=1-2t\\ y=-2+t\\ z=2+3t\end{array}\right.$

B.  $\left\{\begin{array}{l}x=-2+t\\ y=1-2t\\ z=3+2t\end{array}\right.$

C.  $\left\{\begin{array}{l}x=-2+t\\ y=1+2t\\ z=3-2t\end{array}\right.$

D.  $\left\{\begin{array}{l}x=1+t\\ y=-2+2t\\ z=2+3t\end{array}\right.$

A.  $\left\{\begin{array}{l}x=1-2t\\ y=-2+t\\ z=2+3t\end{array}\right.$

B.  $\left\{\begin{array}{l}x=-2+t\\ y=1-2t\\ z=3+2t\end{array}\right.$

C.  $\left\{\begin{array}{l}x=-2+t\\ y=1+2t\\ z=3-2t\end{array}\right.$

D.  $\left\{\begin{array}{l}x=1+t\\ y=-2+2t\\ z=2+3t\end{array}\right.$

A. m = 2

B. m = -12

C. m = 12

D. m = -2

A. m = 2

B. m = -12

C. m = 12

D. m = -2