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Let the speed of the train be x km/hr. Then Time taken to travel a distance of 480km=x480hr Time taken by the train to travel a distance of 480km with the speed (x−8)km/hr=x−8480hr It is given that if the speed had been 8km/hr less, then the train would have taken 3 hours more to cover the same distance ∴x−8480=x480+3 ⇒x−8480−x480=3⇒x(x−8)480(x−x+8)=3⇒x(x−8)480×8=3 ⇒3x(x−8)=480×8⇒x(x−8)=160×8⇒x2−8x−1280=0

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List the properties of magnetic field lines

Posted by Manvi Moudgil 2 years, 7 months ago

CBSE > Class 10 > Science

1 answers

Arjit Chauhan 2 years, 7 months ago

Properties of Magnetic field lines are : 1)They are closed curves. 2)They originate in north pole and end in south pole. 3)Inside the magnet they are from South pole to north pole. 4)One magnetic field line cannot intersect other magnetic field line.

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Why does a compass needle get d deflect when brought near a bar magnet

Posted by Manvi Moudgil 2 years, 7 months ago

CBSE > Class 10 > Science

1 answers

Arjit Chauhan 2 years, 7 months ago

Compass contains magnetic properties that is why when a compass is brought near magnet it shows deflection due to magnetic force

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BBC compacta class 10 answere key

Posted by Pavneet Kaur 2 years, 7 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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Name the Commission which was formed to look into the functioning of the constitutional system in India. Who was the President of the Commission.

Posted by Prakash Sahu 2 years, 7 months ago

CBSE > Class 10 > Social Science

1 answers

Prabhjot Singh 2 years, 7 months ago

You talked about Simon commission, it was appointment to suggest constitution reforms and its head was Sir John Simon

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A 1.5 m tall boy is standing at some distance from a 30 m tall buildings. The angle of elevation from his eyes to the top of the building increase from 30 degree to 60 degree as he walks toward the building. Find the distance he walked towards the building

Posted by Sanvi Singh 2 years, 7 months ago

CBSE > Class 10 > Mathematics

0 answers

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A life insurance agent found the following data for distribution of ages of 100 policy holders . calculate the median age,if policies are given only to person having age 18 years onwards but less than 60 year

Posted by Ambika Verma 2 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Rohit Sharma 2 years, 7 months ago

Class intervalFrequencyCumulative frequency 15−202 2 20−254 6 25−3018 24 30−3521 45 35−4033 78 40−4511 89 45−503 92 50−556 98 55−602 100 ⇒ N=100 then, 2N=50 The cumulative frequency just greater then 50 is 78. ∴ Median class =35−40 Here, l=35,h=5,f=33,cf=45 Median=l+f2N−cf×h ⇒ Median=35+3350−45×5 ⇒ Median=35+3325=35.76

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write down the decimal explanation of the following rational numbers by writing there denominator in the form 2ⁿ5m where m n are non negative integers 3/5

Posted by Sahildeep Singh Billing 2 years, 7 months ago

CBSE > Class 10 > Mathematics

0 answers

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Bravia Worksheet 1

Posted by Anushka Tegwal 2 years, 7 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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Study the given graph and write an analytical paragraph in about 100-120 words

Posted by Parveen Kaur 2 years, 7 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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You are Advil of D-6, Modern Society, New Enclave, Dehradun. You are concerned at the frequent cases of cloud- burst and landslides in uttarakhand during the rainy season. Write a letter to the editor of a national daily highlighting the plight of the helpless residents during such calamities. You suggest that a better whether forecasting measures can give the desired results in coping with such calamities. (100-120 words)

Posted by Saurav 10 2 years, 7 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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Write a letter to chairman of the village council village & post office barabanki, mehraj pur, Uttar Pradesh , India , enquiring about a village resident's whereabouts

Posted by Tamanna Sehgal 2 years, 7 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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Love for freedom is the natural instinct of every living being. Comment with reference to ‘ A tiger in the Zoo ‘.

Posted by Kashish Nigam 2 years, 7 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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Is alankar topic deleted from the syllabus 2023-24

Posted by Akshra Sharma 2 years, 7 months ago

CBSE > Class 10 > हिंदी ब

1 answers

Youvansh Sharma 2 years, 6 months ago

yes

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Metro cities have to face continuous

Posted by Spoorthi .J 2 years, 7 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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People have conflicting development goals support the statement with sustainable example

Posted by Mevin . R 2 years, 7 months ago

CBSE > Class 10 > Social Science

0 answers

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find the zeroes of the quadratic polynomials and verify the relationship between the zeroes and the coefficients :- 1) 5x² - 29x + 20

Posted by Aditya Jadhavrao 2 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Vivek Solanki 2 years, 7 months ago

5x²-29x+20 5x²-25x-4x+20 5x(x-5)-4(x-5) (x-5) (5x-4) X=5,X=4/5 Let alpha be 5 and bita be 4/5 Alpha +bita =5+4/5 =24+4/5 =29/5 -b/a =-(-29)/5 =29/5 Hence proved,alpha +bita =-b/a Alpha bita =5(4/5) =4 c/a =20/5 =4 Hence proved, alpha bita =c/a

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Vivek Solanki 2 years, 7 months ago

Alpha =5 and bita =4/5

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