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an=a+(n-1)d 62=8+(n_1)d 54=nd-d (1) Sn=n/2 (2a+(n-1)d) 210=n/2 (2×8+(n-1)d) 420=n (16+nd-d ) 420=16n+n (nd-d ) 420=16n+n (54) (from 1) 420=16n+54n 420=70n 420/70=n Hence n=6 Now put the value of n in equation 1,we get 54=nd-d 54=6d-d 54/5=d

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Who is hill

Posted by Vikash Kumar 5 years ago

CBSE > Class 10 > English Language and Literature

1 answers

Malaika Sharma 5 years ago

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Can we use 'dear' word in salutation in formal letters?

Posted by Shahreen Fatima 5 years ago

CBSE > Class 10 > English Language and Literature

5 answers

Adithya Dev A 5 years ago

No. It is better to use Respected before sir or madam. Nowadays, Simply sir or madam is enough.

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Shreya S.D 5 years ago

No.

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Kinjal Agarwal 5 years ago

No, use:- respected sir/madam

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Ranjeet Singh Rajput 5 years ago

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Shivam Yadam 5 years ago

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D and E are the points on the side CA and CB,respectively of a ∆ABC right angle at C.Prove that AE^2+BD^2=AB^2+DE^2.

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

0 answers

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If the roots if the equation ax^2+2bx+c=0 and bx^2-2√acx+b=0 are simultaneously real,then prove that b^2=ac.

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Ranjeet Singh Rajput 5 years ago

answr Join / Login What would you like to ask? 11thMathsComplex Numbers and Quadratic EquationsQuadratic EquationsIf the roots of the equatio... Maths If the roots of the equations ax2+2bx+c=0 and bx2−2acx+b=0 are simultaneously real, then prove that b2=ac. Easy Answer Let D1 and D2 be the discriminants of the two equations, then D1≥0 and D2≥0 ⇒4b2−4ac≥0 and 4ac−4b2≥0 ⇒b2≥ac and ac≥b2 ⇒b2=ac

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If 2sin^2theta-cos^2theta=2,then find the value if theta.

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Sunny Singh 5 years ago

Thita = 90°

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Gade Sarvesh 5 years ago

2sin^2theta-cos^2theta=2 Theta=90°.

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The points A(4,7),B(p,3)and C(7,3)are the vertics of a right triangle, right angle at B.Find the value of p.

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the perimeter of semicircular protractor is 36cm,find its diameter.

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

3 answers

Life Is Full Of Struggle 5 years ago

11.45 is wrong answer ?

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Life Is Full Of Struggle 5 years ago

2r+πr=36......... r(2+π)=36......... r{2+22/7}=36........ r(36/7) =36 ...... r=7 ...... Diameter = 2(7) =14cm

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Kinjal Agarwal 5 years ago

11.45

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Taking theta=30°,verify cos3theta=4cos(cube)theta-3cos theta

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

0 answers

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If two tangents incline at an angle of 60°are drawn to a circle of radius 3 cm,find the length of each tangent?

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Define ddl and dml

Posted by Gautam Kumar 5 years ago

CBSE > Class 10 > Information Technology (402)

2 answers

Krisha Tripathi 5 years ago

DDL is stand for data definition language DDL command are create ,alter, drop. DML is stand for data manipulation language DML commands are select ,insert, delete ,update.

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Dhanasree .R 5 years ago

DDL stands for Data Definition Language. DML stands for Data Manipulation Language. DDL statements are used to ceate database, schema, constraints, users, tables etc. DML statement is used to insert, update or delete the records.

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What is the least number that is divisible by all the number from 1 to 10 and why?

Posted by Himanshu Verma 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Bhoomika Verma 5 years ago

The least number divisible by all the numbers from 1 to 10 will be the LCM of these numbers.....1=1 .......2=2×1 .....3=3×1......4=2×2......5=5×1.. ...6=2×3......7=7×1.......8=2×2×2........9=3×3.....10=2×5...........so,LCM of these numbers=1×2×2×2×3×3×5×7=2520........hence,least number divisible by all the numbers from 1 to 10 is 2520.

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What is meant by catanation.

Posted by Sudhir Kumar 5 years ago

CBSE > Class 10 > Science

5 answers

Adithya Dev A 5 years ago

Carbon atoms possess the unique ability to combine with other atoms of the same element to form single long chains of different shapes, lengths and sizes. The unique electronic configuration and small size of a carbon atom makes the C-C bonds the strongest.

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Kashish Ramnani 5 years ago

The process of self linking of carbon known as catenation

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Sudhir Kumar 5 years ago

Thanks

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Dhananjay Gautam 5 years ago

Property of making long chain by direct bonding in same element. For ex- Carbon, Silicon

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Shreya Gupta 5 years ago

Catenation is a property of an atom that enables it to form large number of chains to form different atoms that are stable . Carbon exhibits the property of Catenation

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What is table of content . Explain

Posted by Tarun Raj Sahay 5 years ago

CBSE > Class 10 > Information Technology (402)

1 answers

Kavya Chanana 5 years ago

TOC is a table listing all the heading and sub heading

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You are rakesh / rashmi resident B-15 janakpuri New Delhi you have been gifted an electric Scooty by your grandfather on his retirement write a letter to your grandfather expressing your feeling for him

Posted by Shrisham Khushi Tiwari 5 years ago

CBSE > Class 10 > English Language and Literature

0 answers

ANSWER

Tough questions on bade bhai sahab

Posted by Sbshivapuji Shivapuji 5 years ago

CBSE > Class 10 > हिंदी ए

0 answers

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The perimeter of rhombus ABCD is 40cm find the area of rhombus if it's digonal BD measure 12cm

Posted by Pratik Tomar 5 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Write about sign convention in Electricity

Posted by Duvarakesh K 5 years ago

CBSE > Class 10 > Science

1 answers

Sudhir Kumar 5 years ago

I think it is the property that shows us in which direction the current is flowing.

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Character sketch of bholi Chapter 9 foot print without feet

Posted by Vanshika Paswan 5 years ago

CBSE > Class 10 > English Language and Literature

1 answers

Arjun Chaudhary 5 years ago

Girl Sulekha called Bholi youngest daughter of number dar Ramlal. An Accident made her a backward child (10month old) and had pox marks on body (when 2 years old). She spokes first time (when 5 year old) and stammered. Parents did not care for her. Primary school opened (She was 7 year old). People did not want to marry educated

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What are the various ways in which a chemical equation can be made more information? Give example to illustration your answer.

Posted by Kashish Garg 5 years ago

CBSE > Class 10 > Science

5 answers

Anurag Singh 5 years ago

By indicating physical state

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Adithya Dev A 5 years ago

1) By showing physical states. (Solid=s, liquid=l, gas=g, aqueous=aq). 2) Reaction conditions and catalysts (above and below the arrow) 3) Evolution of gas (Upward arrow) and formation of precipitate (Downward arrow). 4) Whether there is a temperature or if there is release or absorption of heat (where heat is delta or Δ)

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Siya Singh 5 years ago

By indicating physical states for example: (l), (s), (aq), and (g)

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Kodaparthi Gangothri 5 years ago

By showing them with their formula

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Duvarakesh K 5 years ago

*By indicating their Physical state. *By indicating the heat changes taking place in the reaction . *By indicating the condition under which the reaction takes place

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From which letter Magnetic field is represented

Posted by Aditya Kashyap 5 years ago

CBSE > Class 10 > Science

2 answers

Kashish Ramnani 5 years ago

'B'

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Kashish Kumari 5 years ago

Letter 'B'

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X²-4x+3

Posted by Kashaf Siddiqui 5 years ago

CBSE > Class 10 > Mathematics

3 answers

Gade Sarvesh 5 years ago

x^2-4x+3 x^2-x-3x+3 x(x-1)-3(x-1) (x-1)(x-3) x-1=0 , x=1, x-3=0 , x=3. x=1,3.

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Vishal Prajapat 5 years ago

X = 3. Ans

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S Shridharshini 5 years ago

x^2-3x-1x+3=0 x(x-3)-1(x-3)=0 (x-1)(x-3)=0 x-1=0 , x-3=0 x=1 , x=3

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How did people belonging to different communities , regions or languages groups develop a sense of collective belonging in the 19th century India ? Explain.

Posted by Srusti Srusti 5 years ago

CBSE > Class 10 > Social Science

3 answers

Vansham Dutta 5 years ago

Pta nhi

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Ranjeet Singh Rajput 5 years ago

Nationalism in India Zigya App How did people belonging to different communities, regions or language groups develop a sense of collective belonging? This sense of collective belonging came partly through the experience of united struggles. But there were also a variety of cultural processes through which nationalism captured people's imagination. (i)History and fiction, folklore and songs, popular prints and symbols, all played a part in the making of nationalism. (ii)The identity of India came to be visually associated with the image of Bharat Mata, which was created in 1870 by Bankim Chandra Chattopadhyay, who wrote ‘Vande Mataram’ as a hymn to the motherland. Inspired by the Swadeshi Movement, Abanindranath Tagore painted his famous image of Bharat Mata. (iii)The idea of nationalism was also developed through reviving Indian folklore. In late-nineteenth-century India, nationalists began recording folk tales sung by bards and they toured villages to gather folk songs and legends. This was done to promote the traditional culture that had been corrupted and damaged by outside forces.

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Adithya Dev A 5 years ago

1) United struggles. 2) Anti-imperialist thinking. 3) Folk culture. 4) Flags. 5) Icons (Bharat Mata). 6) Reinterpretation of history.

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Define traid?

Posted by Akash Kumar 5 years ago

CBSE > Class 10 > Science

4 answers

Smruti Rekha Sahoo 5 years ago

The arrangement of elements in which the atomic mass of middle element is almost the mean of atomic masses of first and third elements is known as triads

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Simmi Fagna 5 years ago

A group of three people or thing that are connected with each other.

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Sudhir Kumar 5 years ago

A group of three closely related compound or elements

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Ayesha 6213 5 years ago

Three

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Rational numbers and their decimal expansion