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3 years ago

. A collection of programs designed to create and manage databases is called a(n))

Computers and Technology

1 answer:

Daniel [21]3 years ago

6 0

Answer:

Database Management System.

Explanation:

Database Management System is the collection of programs and data used to create ,define and manipulate the database.

There are several database management systems present and some of them are as following:-

RDBMS (Relational Database Management System)
No SQL DBMS
CDBMS(Columnar Database Management System).
IMDBMS(In-Memory Database Management System).

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Two machines can finish a job in StartFraction 20 Over 9 EndFraction hours. Working alone, one machine would take one hour long

Alborosie

Answer

5 hours

Explanation

The two working together can finish a job in

$\frac{20}{9} \: hours$

Also, working alone, one machine would take one hour longer than the other to complete the same job.

Let the slower machine working alone take x hours. Then the faster machine takes x-1 hours to complete the same task working alone.

Their combined rate in terms of x is

$\frac{1}{x} + \frac{1}{x - 1}$

This should be equal to 20/9 hours.

$\frac{1}{x} + \frac{1}{x - 1} = \frac{9}{20}$

Multiply through by;

$20x(x - 1) \times \frac{1}{x} +20x(x - 1) \times \frac{1}{x - 1} = 20x(x - 1) \times \frac{9}{0}$

$20(x - 1) +20x = 9x(x - 1)$

$20x - 20+20x = 9{x}^{2} - 9x$

$9{x}^{2} - 9x - 20x - 20x + 20= 0$

$9{x}^{2} - 49x + 20= 0$

Factor to get:

$(9x - 4)(x - 5) = 0$

$x = \frac{4}{9} \: or \: x = 5$

It is not feasible for the slower machine to complete the work alone in 4/9 hours if the two will finish in 20/9 hours.

Therefore the slower finish in 5 hours.

8 0

3 years ago

On which tab are the print commands in Excel 2016 accessed?

galina1969 [7]

Answer:

file (backstage)

Explanation:

edginuity 2020

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3 years ago

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For python how do I ask the user how many numbers they want to enter and then at the ending add those numbers up together?

Digiron [165]

I am not too familiar with the Python language, but the algorithm would be something like this:

1. create a variable for the sums of the number

2. read in how many numbers the user wants to enter (let's call it N)

and then create a for loop:

for N times

read in the next number

increase the sum variable by that number

Hopefully this helps!

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3 years ago

What is the Difference between CUI and GUI

Fynjy0 [20]

Hi there!

GUI Means Graphical user interface

CUI means Controlled Unclassified Information

Theres the difference they are completely different from each other.

PLEASE MARK BRAINLIEST

-WeasuLL

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3 years ago

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Ideally, how long or how many sentences should your video game pitch be?

Olin [163]

Good shot hdhhdbsb suhsbsbs bbsbsbsbdbbdbdbdbdbbd

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3 years ago