5. a² + b²+c²-ab-bc-ca equals : (a) (a + b + c)² (c) (a - b + c)² (b) (a-b-c)²( (d) [(a−b)²+(b-c)²+(c − a)²] Ans (c)​

Answer:

a.Computer hardware engineers research, design, develop, and test computer systems and components such as circuit boards. Computer hardware engineers research, design, develop, and test computer systems and components such as processors, circuit boards, memory devices, networks, and routers.

b.A network administrator is the person designated in an organization whose responsibility includes maintaining computer infrastructures with emphasis on local area networks up to wide area networks.

c.A database administrator (DBA) is the information technician responsible for directing and performing all activities related to maintaining a successful database environment. A DBA makes sure an organization's databases and related applications operate functionally and efficiently.

d.As a web designer, you are responsible for big-picture decisions, like the menus listed on the site, and smaller details, like which font, color, and graphics to use. A web designer creates the layout and design of a website. In simple terms, a website designer makes a site look good.

e.Multimedia designers create engaging presentations of images and information for various media including the Web, television, movies, and video games. Though they work in a high-technology field, multimedia designers generally need a strong foundation in art to be successful.

Step-by-step explanation:

AREA OF PARALLELOGRAM = B × H

H = 48cm

B = 1/4 H = 48/4 = 12cm

B × H = 48×12 = 576 cm²,,

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Answer:

1. I had to complete the work on time( simple past)

I will complete the work on time (simple future)

2. the fruit seller brings fresh fruits (simple present)

the fruit seller had brought fresh fruits (simple past)

3. our colony had round -the -clock security arrangements (simple past)

aur colony will have the round-the- clock arrangements (simple future)

4. Ruchika had a new pair of jeans (simple past)

Ruchika will have a new pair of jeans (simple future)

Answer:

dk+d/k-3d

2d-k+d/k

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