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3 years ago

Enter the cube's edge: 4 The surface area is 96 square units. Python

Computers and Technology

1 answer:

mr_godi [17]3 years ago

5 0

Answer:

See the program code below.

Explanation:

def cube_SA(edge):

edge = int(input("Enter the cube's edge: "))

sa = edge * edge * 6

print("The surface area is {} square units".format(sa))

cube_SA(4)

Best Regards!

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List the difference between sdram and dram

IRISSAK [1]

Answer:

i need this for a challenge

Explanation:

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3 years ago

What does the following function return? void index_of_smallest(const double all, int startindex, int numberOfSlots); A. a doubl

Flauer [41]

Answer:

nothing

Explanation:

Because the return type of the function is void. void means does not return any thing.

The syntax of the function:

type name( argument_1, argument_2,......)

{

statement;

}

in the declaration the type define the return type of the function.

it can be int, float, double, char, void etc.

For example:

int count( int index);

the return type of above function is int. So, it return integer.

similarly,

void count(int index);

it return type is void. So, it does not return any thing.

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3 years ago

Select the correct statement below about database services or database instances:

Zigmanuir [339]

The correct statement about database services or database instances is

( B).An instance of the cloud database operates as a service that handles all application requests to work with the data in any of the databases managed by that instance.

Explanation:

An instance of the Database Engine can be defined as a service that all application requests to work with the data in any of the databases managed by that instance.The data can be on the same system or can be on another system

So in case of a Cloud based database engine

( B).An instance of the cloud database operates as a service that handles all application requests to work with the data in any of the databases managed by that instance.

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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.

E.g.

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

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

A database can be used to manage which of the following for a website?

Oliga [24]

Images would probably be the best choice here

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3 years ago