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3 years ago

Webster defines risk as "the possibility of loss or injury". Therefore, driving a motor vehicle is a risk.

Computers and Technology

1 answer:

telo118 [61]3 years ago

8 0

Answer:

The answer is True.

Explanation:

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What is presentation

Gelneren [198K]

To present something infront of a crowd

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3 years ago

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You plug a new scanner into a USB port on your Windows system. When you first turn on the scanner, what should you expect to see

Paul [167]

Answer:

A window notifying that: Found New Hardware Wizard

Explanation:

As soon as any device is plugged into the USB port, the default settings will display a window onto the screen which will notify about the addition of a new hardware to the system. This window can further be used to know the properties of the hardware or for configuration settings.

This process is same like the software part, that whenever a new application is installed onto the system a pop up notification alerts about its presence.

So when the scanner will be attached through USB port a window will be appeared notifying about the discovery of new hardware.

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3 years ago

The larget social networking site to date is

maks197457 [2]

FB, I would guess.

Sincerely,

Xeno

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3 years ago

The most widely used presentation software program is Microsoft PowerPoint. You can produce a professional and memorable present

dolphi86 [110]

Answer:

Explanation:

Because you do not want to make your presentation be dark especially in a low lighted room.

(Certified MOS 2016 Powerpoint User)

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3 years ago

What would you have to know about the pivot columns in an augmented matrix in order to know that the linear system is consistent

Scrat [10]

Answer:

The Rouché-Capelli Theorem. This theorem establishes a connection between how a linear system behaves and the ranks of its coefficient matrix (A) and its counterpart the augmented matrix.

$rank(A)=rank\left ( \left [ A|B \right ] \right )\:and\:n=rank(A)$

Then satisfying this theorem the system is consistent and has one single solution.

Explanation:

1) To answer that, you should have to know The Rouché-Capelli Theorem. This theorem establishes a connection between how a linear system behaves and the ranks of its coefficient matrix (A) and its counterpart the augmented matrix.

$rank(A)=rank\left ( \left [ A|B \right ] \right )\:and\:n=rank(A)$

$rank(A)$

Then the system is consistent and has a unique solution.

$\left\{\begin{matrix}x-3y-2z=6 \\ 2x-4y-3z=8 \\ -3x+6y+8z=-5 \end{matrix}\right.$

2) Writing it as Linear system

$A=\begin{pmatrix}1 & -3 &-2 \\ 2& -4 &-3 \\ -3 &6 &8 \end{pmatrix}$ $B=\begin{pmatrix}6\\ 8\\ 5\end{pmatrix}$

$rank(A) =\left(\begin{matrix}7 & 0 & 0 \\0 & 7 & 0 \\0 & 0 & 7\end{matrix}\right)=3$

3) The Rank (A) is 3 found through Gauss elimination

$(A|B)=\begin{pmatrix}1 & -3 &-2 &6 \\ 2& -4 &-3 &8 \\ -3&6 &8 &-5 \end{pmatrix}$

$rank(A|B)=\left(\begin{matrix}1 & -3 & -2 \\0 & 2 & 1 \\0 & 0 & \frac{7}{2}\end{matrix}\right)=3$

4) The rank of (A|B) is also equal to 3, found through Gauss elimination:

So this linear system is consistent and has a unique solution.

8 0

3 years ago