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If the first term of an A.P. is 5, the nth term is 40 and the sum of first n terms is 180, find the value of n.

Posted by Mohd Israiel Anis 2 years, 6 months ago

2 answers

an=a+(n-1)d 40=5+(n-1)d 35=(n-1)d.......1 Sn=n/2(2a+(n-1)d) 180=n/2(2*5+(n-1)d) 360=n(10+(n-1)d) Using 1 equation 360=n(10+35) 360=n(45) n=360/45 n=8 Answer

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Mohd Israiel Anis 2 years, 6 months ago

Answer

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What happens to our eyes when we come out of dark and enters bright sunlight?

Posted by Tripta Devi 2 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Paramjeet Kaur 2 years, 6 months ago

The pupil size becomes short when we enter bright light also the cone cells of the eye become active

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Explain the 3 categories of forest?

Posted by Tejas Bhaskar 2 years, 6 months ago

CBSE > Class 10 > Social Science

1 answers

Navjot Kaur 2 years, 6 months ago

Reserved forest Protected forest Village forest

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Notes of Matal and non metal

Posted by Ashay Tiwari 2 years, 6 months ago

CBSE > Class 10 > Science

0 answers

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Devjyoti class 10 Bravia solutions pdf

Posted by Harsh Koundal 1 year, 6 months ago

CBSE > Class 10 > English Language and Literature

4 answers

Sushilkumar Forexternaluse 1 year, 7 months ago

damn you

3Thank You

Sushilkumar Forexternaluse 1 year, 7 months ago

are you kidding me idiot

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Sushilkumar Forexternaluse 1 year, 7 months ago

which

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B B 2 years, 6 months ago

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Debjyoti Bravia solution

Posted by Bhuwan Joshi 2 years, 6 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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Do filups

Posted by Vandana Verma 2 years, 6 months ago

CBSE > Class 10 > Social Science

1 answers

Dhanya Dhanya 2 years, 6 months ago

Ues

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Write phrases of poem fire and ice

Posted by Meet Meet 2 years, 6 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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Neeraj and Hrithik went to a nearby pizza shop for lunch. The shop had a unique method for the price allotment of pizza every day. The price of each pizza they prepare on a specific day is equal to 4 more than twice the total number of pizzas they produced on that day. The total cost of production on that day was 448 rupees. Answer the following questions: 1. The quadratic equation for given situation is: 2. Find the number of pizzas produced. Or Write the general form of quadratic equation. 3. Find the cost of each pizza.

Posted by Vaishnavi Mishra 2 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Himanshu Dhakad 2 years, 6 months ago

Let the number of pizzas produced on that day be X So price of each pizza(as per question) will be= (2x + 4) Rs Since it is given that total cost of production on that day is Rs.448 (Price of each pizza)*(number of pizzas produced) = 448 (2x + 4)*X = 448 2x² + 4x = 448 X² + 2x = 224 X² + 2x - 224 = 0 Now factorisation as.. (Multiply krne pr 224 or minus krne pe plus Ka 2 Toh 16-14=2 and 16*14= 224) X² + 16x - 14x - 224 = 0 X(X+16)-14(X+16)=0 (X+16)(x-14)=0 So X= 14 and X=-16 Since number of pizzas produced on that day cannot be nigative therefore number of pizzas produced are 14

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Which is the easiest method of communication and why?

Posted by Fshshshe Heueuenepayal 2 years, 6 months ago

CBSE > Class 10 > Information Technology (402)

1 answers

Ankesu Karak 2 years, 6 months ago

Verbal because it is very easy to understand and time saving

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Why value 'n' in A.P. is always positive

Posted by S P Jaishwal 2 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Himanshu Dhakad 2 years, 6 months ago

Kyuki Kisi bhi cheez ki agr count krenge toh wo negative nhi ho skta kbi like if you are counting number of tables then it cannot be like minus 7 tables so n is always positive

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Rajiv Sharma 2 years, 6 months ago

What is resistivity

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You are Rohan/Roshni, a resident of 14, Hudson Street, Karnal. You have recently been transferred to Ambala. You have shifted your furniture and other household items using the services of Agrasen Transport Company. You found that some of your furniture hasbeen damaged while being moved. Write a letter in 150 –200 words to The Manager, Agrasen Transport Company, Hayward Road, Karnal, complaining about the same and demanding compensation for the damaged goods.

Posted by Jeevana Jeevika 2 years, 6 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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30th term of Ap:10,7,4.....,is (a)97 (b) 77 (c) -77 (d) -87

Posted by Ankit Kumar Gurjar 2 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Himanshu Dhakad 2 years, 6 months ago

Simple hai 30th term ki value poochi hai or AP de Rakhi hai....given AP mein a=10 ho Gaya or d ki value minus 3 ....ab 30th term ko likh skte hai (a+29d) ab bs value put Karo "a" ki or d ki (10+29*(-3)) solve krenge or answer hoga minus 77 Hope it will help you;)

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S P Jaishwal 2 years, 6 months ago

( c) -77

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Communication enables people to symbolically represent objects ideas

Posted by Vikram Singh 2 years, 6 months ago

CBSE > Class 10 > Artificial Intelligence (417)

0 answers

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Why did food items offer scope for long distance culture exchange?

Posted by Saksham Toshniwal 2 years, 6 months ago

CBSE > Class 10 > Social Science

0 answers

ANSWER

2xsquare+1x

Posted by Fathimath Naja Naja 2 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Did lencho try to find out who had sent the money to him

Posted by Aniketh Prasad 2 years, 6 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Ruhi Kaur 2 years, 6 months ago

Lecho didn't try to find out who has sent money to him as he had a complete faith in God and knew that God will send him money

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Explain the statement, "when France sneezes, the rest of Europe catches cold".

Posted by Nikhila Yadla 2 years, 6 months ago

CBSE > Class 10 > Social Science

1 answers

Navjot Kaur 2 years, 6 months ago

This statement is given by matternich because he was an Austrian chancellor who believed that the political changes taking place were interested in other European countries

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What major steps were taken in 1992 towards decentralization

Posted by K R 2 years, 6 months ago

CBSE > Class 10 > Social Science

0 answers

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Define the principal focaus of concave mirror

Posted by Manav Kumar 2 years, 6 months ago

CBSE > Class 10 > Science

3 answers

Gaurav Kumar 2 years, 6 months ago

The principal focus is the half of the radius of curvature at imaginary line ,i.e,principal axis which join with the pole

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Shruti Tiwari 2 years, 6 months ago

Principal focus of a concave mirror is a point on the principal axis of the mirror at which the light rays coming parallel to the principal Axis after reflection actually meet

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Tejas Raj 2 years, 6 months ago

The principial focus of a concave is half of its centere of curvature where all light rays converge.

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Why non coorperation?How could non coorperation become a movement

Posted by Fahad Pm 2 years, 6 months ago

CBSE > Class 10 > Social Science

0 answers

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Prenences of mind and intellengence are powerful than gun .how far it is true in case of Ausable?

Posted by R Hardik Jain 2 years, 6 months ago

CBSE > Class 10 > English Language and Literature

0 answers

ANSWER

The sum of the first 100 even natural numbers is :

Posted by Pratibha Pratibha 2 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Himanshu Dhakad 2 years, 6 months ago

Dekho first 100 even natural numbers Ka sum krna hai okk toh ek AP likh k dekhte hai .....natural numbers kya hote hai like general counting 1 2 3 4...ESE numbers but even likhne hai toh AP Kuch ESI banegi.>>>2,4,6,8,9,10...... Hope you know that even number wo hote hai Jo 2 se divide ho jate hai completely so ab Hume a AP mil gayi......nikalna hai 100 natural even numbers Ka sum Sum of n terms Ka formula HOTA hai Sn=n/2(2a+(n-1)d) Yaha n ki value 100 ho jayegi kyuki 100 even numbers Ka sum krna hai or AP Jo humne banai hai usse clearly "a" ki value 2 hai or d ki value bhi 2 bs values put krke solve kr denge ....S100=100/2(2*2+(100-1)2)..............S100=50(4+99*2)......S100=50(202)......S100=10,100 answer Hope it will help you;)

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S P Jaishwal 2 years, 6 months ago

11100

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Write about 5 great social reformers of India.

Posted by Abhay Pratap 2 years, 6 months ago

CBSE > Class 10 > Social Science

0 answers

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15bulb of 16 volt each run for 6 hours daily a refreejaretore of 300w run for 5 hours daily calculate number of unit for mountn and calculate total electricity bill if one unit is charged rupees

Posted by Harshit Damor 2 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Shagun Gupta 2 years, 6 months ago

What is the liquid

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Please send me last year paper of hindi 2022-2023

Posted by Jss Kaur 2 years, 6 months ago

CBSE > Class 10 > हिंदी ब

0 answers

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Give two argument each for and against the reorganisation of states on linguistic basis

Posted by Kashish Jindal Kashish Jindal 2 years, 6 months ago

CBSE > Class 10 > Social Science

0 answers

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Theme of poem- A tiger in the zoo

Posted by Vartika Singh 2 years, 6 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Deepika Balhra 2 years, 6 months ago

The poem brings fourth the idea that it is unfair and unjustifiable on the part of a man to enslave and enclave the wild animals and to impose on them a life of bondage and confinement. The animals put into the cramped spaces of the zoo are deprived of the natural habitats and it causes separation of their natural, essential behaviour. The tiger in the poem presents apathetic site as instead of enjoying the open expanse of the forest and preying upon other animals, hemu's about only a few faces in the cage and behaves in an unnaturally quite manner.

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Ghbvgghhb

Posted by Anshul Dadwal 2 years, 6 months ago

CBSE > Class 10 > Science