Bất phương trình \({\log _3}(3x - 2) \ge 2\)có tập nghiệm là:

A. \(\left( { - \infty \,;\,15} \right)\).

B. \(\left( {15\,;\, + \infty } \right)\).

C. \(\left( { - \infty \,;\,3} \right)\).

D. \(\left( {3\,;\, + \infty } \right)\).

A. \(\left[ { - \frac{1}{2}; + \infty } \right)\).

B. \(\left( { - \frac{1}{2}; + \infty } \right)\).

C. \(\left( { - \infty ; - \frac{1}{2}} \right)\).

D. \(\left( { - \infty ; - \frac{1}{2}} \right]\).

A. \[{(x - 2)^2} + {(y - 2)^2} + {z^2} = 4\].

B. \[{(x + 2)^2} + {(y + 2)^2} + {z^2} = 5\].

C. \[{(x - 2)^2} + {(y - 2)^2} + {z^2} = \sqrt 5 \].

D. \({(x - 2)^2} + {(y - 2)^2} + {z^2} = 5\).

A. \({S_5} = 30\).

B. \({S_5} = 12\).

C. \({S_5} = 60\).

D. \({S_5} = 24\).

A. \(\left( d \right):\left\{ \begin{array}{l}x = 3 - 2t\\y = 2 - 5t\\z = 1\end{array} \right.\).

B. \(\left( d \right):\left\{ \begin{array}{l}x = 3 + 2t\\y = 2 + 5t\\z = 1\end{array} \right.\).

C. \(\left( d \right):\left\{ \begin{array}{l}x = 3 + 2t\\y = 2 - 5t\\z = t\end{array} \right.\).

D. \(\left( d \right):\left\{ \begin{array}{l}x = 3 + 2t\\y = 2 - 5t\\z = 1\end{array} \right.\)

A. \(29\).

B. \(28\).

C. \(30\).

D. \(27\).