Which type of rope is used for suspending one or more people?

Which statement describes usage of a radio that is NOT appropriate?

A fire investigator arrives on the scene of a retail store fire and determines the smoke and steam are too heavy to conduct a proper investigation. The investigator returns the next morning and conducts the investigation, finding no evidence. One week later, the investigator returns again and finds several items of significant evidence. Will this evidence be permitted for use in court?

What is a common cause of decreased water volume in older distribution systems?

Considering a high-rise operation, where should rehab be established?

A fire can only be deemed fully extinguished when what has been completed?

What was one conclusion of the Paris study on victims of smoke inhalation?

In which occupancy type do most civilian deaths occur due to fire?

Reduce the matrix A below to the Reduced Row Echelon Form, showing all the steps. $$\left[ \begin{array}{rrrr}1 & 0 & 1 & -1 \\0 & -1 & -3 & 4 \\3 & 0 & 3 & -3 \\-3 & 0 & -3 & -1 \\\end{array} \right]$$

Let T be a linear transformation. Define $$T: R^4 \rightarrow R^3$$ by $$T \left(\begin{bmatrix}&1 \\&0\\&0\\&0\end{bmatrix} \right) = \begin{bmatrix}&2\\&3\\&0\end{bmatrix} $$, $$T \left(\begin{bmatrix}&0 \\&1\\&0\\&0\end{bmatrix} \right) = \begin{bmatrix}&0\\&2\\&1\end{bmatrix} $$, $$T \left(\begin{bmatrix}&0 \\&0\\&1\\&0\end{bmatrix} \right) = \begin{bmatrix}&6\\&1\\&2\end{bmatrix} $$, $$T \left(\begin{bmatrix}&0 \\&0\\&0\\&1\end{bmatrix} \right) = \begin{bmatrix}&0\\&3\\&0\end{bmatrix} $$   a) Using the information above, find a formula for $$T(\vec{x})$$ for all $$\vec{x} = \begin{bmatrix}&x_1 \\&x_2\\&x_3\\&x_4\end{bmatrix} $$ in $$R^4$$.   b) Find the standard matrix A of T.   c) Is T one-to-one? Prove your answer using the matrix A.   d) Is T onto? Prove your answer using the matrix A.