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jasenka [17]
3 years ago
9

Which task is a part of the analysis phase of the SDLC

Computers and Technology
2 answers:
eduard3 years ago
8 0
Following are the seven phases of the SDLC:Planning (1), Systems Analysis (2), Systems Design (3), Development (4), Testing (5), Implementation (6) and Maintenance (7)
STALIN [3.7K]3 years ago
7 0

all of them................................................


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Which statement best describes the problem statement below?
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Answer:

B

Explanation:

This problem statement does not clearly define the issues.

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Provides images of weather systems, and helps to track storms at different altitudes
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9.A major step before taking print of the document is (3 points)
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2 years ago
Two machines can finish a job in StartFraction 20 Over 9 EndFraction hours. Working​ alone, one machine would take one hour long
Alborosie

<em><u>Answer</u></em>

5 hours

<em><u>Explanation</u></em>

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.

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2 years ago
Which of the following best describes professional behavior in the IT field?
Liono4ka [1.6K]
Option A. is the correct answer the other three are not professional behaviour if you would like an explanation as to why they are not just comment
7 0
2 years ago
Read 2 more answers
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