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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 4 years, 9 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Malaika Sharma 4 years, 9 months ago

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ANSWER

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

Posted by Shahreen Fatima 4 years, 9 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Adithya Dev A 4 years, 9 months 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 4 years, 9 months ago

No.

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Kinjal Agarwal 4 years, 9 months ago

No, use:- respected sir/madam

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Ranjeet Singh Rajput 4 years, 9 months ago

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Shivam Yadam 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

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 4 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Ranjeet Singh Rajput 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Mathematics

2 answers

Sunny Singh 4 years, 9 months ago

Thita = 90°

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Gade Sarvesh 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

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

Posted by Himanshu Verma 4 years, 9 months ago

CBSE > Class 10 > Mathematics

3 answers

Life Is Full Of Struggle 4 years, 9 months ago

11.45 is wrong answer ?

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Life Is Full Of Struggle 4 years, 9 months 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 4 years, 9 months ago

11.45

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

Posted by Himanshu Verma 4 years, 9 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

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 4 years, 9 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Define ddl and dml

Posted by Gautam Kumar 4 years, 9 months ago

CBSE > Class 10 > Information Technology (402)

2 answers

Krisha Tripathi 4 years, 9 months 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 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhoomika Verma 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Adithya Dev A 4 years, 9 months 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 4 years, 9 months ago

The process of self linking of carbon known as catenation

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Sudhir Kumar 4 years, 9 months ago

Thanks

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Dhananjay Gautam 4 years, 9 months ago

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

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Shreya Gupta 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Information Technology (402)

1 answers

Kavya Chanana 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > English Language and Literature

0 answers

ANSWER

Tough questions on bade bhai sahab

Posted by Sbshivapuji Shivapuji 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Write about sign convention in Electricity

Posted by Duvarakesh K 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Sudhir Kumar 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Arjun Chaudhary 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Anurag Singh 4 years, 9 months ago

By indicating physical state

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Adithya Dev A 4 years, 9 months 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 4 years, 9 months ago

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

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Kodaparthi Gangothri 4 years, 9 months ago

By showing them with their formula

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Duvarakesh K 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Kashish Ramnani 4 years, 9 months ago

'B'

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Kashish Kumari 4 years, 9 months ago

Letter 'B'

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X²-4x+3

Posted by Kashaf Siddiqui 4 years, 9 months ago

CBSE > Class 10 > Mathematics

3 answers

Gade Sarvesh 4 years, 9 months 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 4 years, 9 months ago

X = 3. Ans

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S Shridharshini 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Social Science

3 answers

Vansham Dutta 4 years, 9 months ago

Pta nhi

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Ranjeet Singh Rajput 4 years, 9 months 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 4 years, 9 months 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 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Smruti Rekha Sahoo 4 years, 9 months 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 4 years, 9 months ago

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

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Sudhir Kumar 4 years, 9 months ago

A group of three closely related compound or elements

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Ayesha 6213 4 years, 9 months ago

Three

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Rational numbers and their decimal expansion