CBSE > Class 10 | CBSE Board | Homework Help

α +β= (-b/a),α+β=5/2, αβ=c/a,αβ=8/2=4, (α+β)^2 = α^2+β^2+2αβ,(5/2)^2=α^2+β^2+8 25/4-8=α^2+β^2,α^2+β^2=(-7/4) Then, α/β+β/α = α^2+β^2/αβ=(-7/4)/4=(-7/16)

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Hi!! Sumali I have already read it and want to know if you get out of that very problem or not

Posted by Secret ??? 5 years, 2 months ago

CBSE > Class 10 > English Language and Literature

4 answers

Sumaila Ali Choudhary??? 5 years, 3 months ago

Yaaa

4Thank You

Secret ??? 5 years, 3 months ago

Crafty Queen= Sumali Ali??

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Sumaila Ali Choudhary??? 5 years, 3 months ago

Noo bcz today is my hindi exam,,,,soo want to focus only on hindi subject

3Thank You

Sumaila Ali Choudhary??? 5 years, 3 months ago

No ,,, sorry for mis understanding

3Thank You

ANSWER

Friends abi tak mane kuch bhi nhi pada h What can I do to get full marks in board exams

Posted by Krazy Girl 5 years, 3 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Versha Gahlyan 5 years, 3 months ago

You can also get good marks by watching summary of the chapters

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Secret ??? 5 years, 3 months ago

Rahul now you have time to get full marks

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Krazy Girl 5 years, 3 months ago

Thank you all

2Thank You

Sumaila Ali Choudhary??? 5 years, 3 months ago

In my opinion u have see simran sahni (YouTube channel) dii she teach us very sweat and nice manner and teach us very important things from whole book

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Secret ??? 5 years, 3 months ago

You can get good marks by reading chapters throughly and by understanding their meaning and concept but.......... Getting Full marks at this very time is likely to be very difficult

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ANSWER

Proof That 2 root 5 irrational

Posted by Alok Gupta 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Bhoomika Verma 5 years, 2 months ago

Let as assume that to the contrary ,that 2√5 is rational. 2√5 =a/b (a and b is coprime and integers and q is not equal to 0 ) √5=a/2b a and b are integers , a/2b is rational , and so √5 is rational . But this contradicts the fact that √5 is irrational . This contradiction has arisen becz of our assumption was wrong that 2√5 is rational. Hence 2√5 is irrational number.

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Basant Kumar Mahto 5 years, 3 months ago

Let 2√5 be rational number.it can be written in the form of p/q. 2√5=p/q √5=p/q. 1/2 We know that √5 is irrational number. It has arisen our assumtion is worng that 2√5 is rational number. Hence 2√5 is irrational number.

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Sumali, what about the matter of your English teacher

Posted by Tanu Choudhary # 5 years, 2 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Sumaila Ali Choudhary??? 5 years, 3 months ago

Ooo ,yes ,,,,how can i show u my talent of crafting? ??

3Thank You

Secret ??? 5 years, 3 months ago

Nothing ????

2Thank You

Sumaila Ali Choudhary??? 5 years, 3 months ago

What u want to say ....???

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Secret ??? 5 years, 3 months ago

Omg! Then crafty Queen should show us her talent so that we can consider her as real crafty queen

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Sumaila Ali Choudhary??? 5 years, 3 months ago

Hii tanu ,,, sorry but mene ye situation pehle he wrote ki hui h plzz use jakr padh lena or agr kuch suggestions de sako de na plzz i m confused now bcz of only my english teacher,,,,, thnku for read my problem and to discuss ,,, very ,very thnku .........

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P(x)3x2+x-2

Posted by Tosif Ansari 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Preeti 5 years, 3 months ago

3x^2 +x -2 3x^2 +3x -2x -2 3x(x-1) - 2(x+1) (3x-2) (x-1) So, Either x= 2/3 Or x= 1

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Tanu Choudhary # 5 years, 3 months ago

Ask the question properly we are unable to understand

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A fraction becomes 1/3 when 1 is subtracted from the numerator and it becomes 1/4 when 8 is added to its denominator . Find the fraction.

Posted by Baisa Hkm ?? 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Tanu Choudhary # 5 years, 3 months ago

x-1/y=1/3 X/y+8=1/4 3x-3=y 4x=y+8(substitute value of y) 4x-3x=-3+8 X=5

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Yogita Ingle 5 years, 3 months ago

Let us assume thenumerator to be =x

Let us assume thedenominator to be =y

Hence the fractionbecomes=x/y

Accordingtothe given condition

(x−1)/y=1/3

⇒y=3x−3 ———-(i)

Accordingtothesecond givencondition,

x/(y+8)=1/4

⇒y+8=4x

⇒y=4x−8 ————(ii)

Combining(i)and(ii) we get,

3x−3=4x−8

⇒3x−4x=−8+3

−x=−5

⇒x=5

from(i)

y=15−3=12

So,the fraction is =5/12

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ANSWER

How to solve the challenges to political parties?

Posted by Dibyaranjan Rout 5 years, 3 months ago

CBSE > Class 10 > Social Science

2 answers

Kiran Kumari 5 years, 3 months ago

(1) Anti-defection law was introduced to curb the growing trend of elected representatives who changed political party to become minister or to get cash reward. (2) The affidavit requirements was an order passed by supreme Court as a measure to curb the challenge of money and muscle power.

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Tanu Choudhary # 5 years, 3 months ago

Political parties can itself solve it so no need to worry about them

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Advanced happy new year my dear friend ??

Posted by Ranvijay Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Malaika Sharma 5 years, 2 months ago

Crafty Queen mein aapki maid nahi hun so don't be so rude And Maine aapko yeh hi kaha tha ki aap apni stories mat share karo because its not allowed.You can check the guidelines.Also tell me how can I help you??? *For eg*-I live in Punjab and you live in Uttar Pradesh Should I come to your place,request your teacher not to force you or call your teacher??You are wasting your as well as our time.Only your parents and Principal can help you. We are helpless.If they don't support you its not our fault.We feel bad for u but we are helpless.Thanks Jai Shri Krishna

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Jagrati Sharma 5 years, 3 months ago

Same to u

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Krazy Girl 5 years, 3 months ago

Same to you☺

2Thank You

Saurabh ???? 5 years, 3 months ago

You to ?

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Sumaila Ali Choudhary??? 5 years, 2 months ago

Same to u

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Happy new year my dear friend I am very sad because I miss you all my friends ???☹️☹️

Posted by Ranvijay Kumar 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Jagrati Sharma 5 years, 3 months ago

Same to u

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Krazy Girl 5 years, 3 months ago

I am also miss my all friends???

3Thank You

Tanu Choudhary # 5 years, 3 months ago

Tumhare school open nhi hue the kya?

3Thank You

ANSWER

What is force

Posted by Priya Pappana 5 years, 3 months ago

CBSE > Class 10 > Home Science

5 answers

Jasleen Gill 4 years, 11 months ago

Pushing or pulling of an object is called " FORCE".

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Kalash Tulsi Pareek 4 years, 11 months ago

Push or pull of an object

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Sneha Kirangi 5 years, 1 month ago

Force is a push or pull.

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Vikash Singh 5 years, 3 months ago

Pull or push of an object

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Yogita Ingle 5 years, 3 months ago

Force is a physical cause that changes or may tend to change the state of rest or the state of motion of an object. Force comes into play due to interaction of two or more objects.

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in which decade was ltte formed what were its demand

Posted by Sasa Dey 5 years, 3 months ago

CBSE > Class 10 > Social Science

1 answers

Yogita Ingle 5 years, 3 months ago

The Liberation Tigers of Tamil Eelam (LTTE) was one of the many groups that came into existence to fight for Tamil rights. Formed in 1975 with its base in the northern and eastern parts of Sri Lanka, the group vowed to forma separate state called Tamil Eelam.

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During heavy rain in a village, the rainwater carried the excessive fertilizers to a pond. How will it affect the fish population in the pond in the long run?

Posted by Aziz Fatima 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Tanu Choudhary # 5 years, 3 months ago

Fish population will have negative experience as the algae and plants growing there will not allow adequate sunlight to reach the fishes and sea plant. Algae also uses O2 present in water which reduces its amount in water which leads to death of fishes

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Tanu Choudhary # 5 years, 3 months ago

Yogita he is asking about fishes not about the plants

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Yogita Ingle 5 years, 3 months ago

If excessive nitrogenous compounds reach the pond,the pond water and its soil will become nutrient rich. The nitrogenous compounds absorbed by plants get converted into amino acids, nucleotides and protein, which help in plant growth and development. The higher the amount of nitrogenous compounds, the greater will be the growth of plant life. Nitrogenous compound enriched pond environment leads to rapid growth of algae and phytoplanktons, followed by more organic matter accumulation. This process is called eutrophication.

2Thank You

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State a way to prevent the accumulation of harmful chemicals in our bodies

Posted by Aziz Fatima 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

1. We can avoid toxic chemical pesticides

2. We can eat organic foods when possible . we should always wash fruits and vegetable before eating

3. We should choose fish wisely , as many contain unsafe levels of toxins

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How many paragraph did anaupchaarik patr have??

Posted by Confusion ??? Master ??? 5 years, 3 months ago

CBSE > Class 10 > हिंदी ए

4 answers

Krishna Gurjar 5 years, 2 months ago

Three

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Versha Gahlyan 5 years, 2 months ago

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Mr. X Sharma 5 years, 2 months ago

Anaupcharik Patra has three paragraphs . Which basically consists of introduction , Body and Conclusion

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Arya Rai 5 years, 3 months ago

Three paragraphs First- introduction Second- body Third- conclusion

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How many paragraph did aupchaarik patr have??

Posted by Confusion ??? Master ??? 5 years, 3 months ago

CBSE > Class 10 > हिंदी ए

1 answers

Sia ? 4 years, 9 months ago

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Format of anaupchaarik patr??

Posted by Confusion ??? Master ??? 5 years, 3 months ago

CBSE > Class 10 > हिंदी ए

1 answers

Laxmi Narayan 5 years, 3 months ago

अनौपचारिक पत्रों का प्रारूप – 1. पता- सबसे ऊपर बाईं ओर प्रेषक (पत्र भेजने वाले) का नाम व पता लिखा जाता है। 2. दिनांक- जिस दिन पत्र लिखा जा रहा है, उस दिन की तारीख। 3. विषय- (सिर्फ औपचारिक पत्रों में, अनौपचारिक पत्रों में विषय का प्रयोग नहीं किया जाता है |) 4. संबोधन- प्रापक (जिस व्यक्ति को पत्र लिखा जा रहा है) के साथ संबंध के अनुसार संबोधन का प्रयोग किया जाता है। (जैसे कि बड़ों के लिए पूजनीय, पूज्य, आदरणीय आदि के शब्दों का प्रयोग किया जाता है और छोटों के लिए प्रिय, प्रियवर, स्नेही आदि का प्रयोग किया जाता है।) 5. अभिवादन- जिस को पत्र लिखा जा रहा है उसके साथ संबंध के अनुसार, जैसे कि सादर प्रणाम, चरण स्पर्श, नमस्ते, नमस्कार, मधुर प्यार आदि | 6. मुख्य विषय- मुख्य विषय को मुख्यतः तीन अनुच्छेदों में विभाजित करना चाहिए। पहले अनुछेद की शुरुआत कुछ इस प्रकार होनी चाहिए- "हम/मैं यहाँ कुशल हूँ, आशा करता हूँ कि आप भी वहाँ कुशल होंगे।" दूसरे अनुच्छेद में जिस कारण पत्र लिखा गया है उस बात का उल्लेख किया जाता है। तीसरे अनुछेद में समाप्ति से पहले, कुछ वाक्य अपने परिवार व सबंधियों के कुशलता के लिए लिखने चाहिए। जैसे कि- "मेरी तरफ से बड़ों को प्रणाम, छोटों को आशीर्वाद व प्यार आदि"। 7. समाप्ति- अंत में प्रेषक का सम्बन्ध जैसे- आपका पुत्र, आपकी पुत्री, आपकी की भतीजी आदि"। अनौपचारिक-पत्र की प्रशस्ति (आरम्भ में लिखे जाने वाले आदरपूर्वक शब्द), अभिवादन व समाप्ति में किन शब्दों का प्रयोग करना चाहिए- (1) अपने से बड़े आदरणीय संबंधियों के लिए- प्रशस्ति – आदरणीय, पूजनीय, पूज्य, श्रद्धेय आदि। अभिवादन – सादर प्रणाम, सादर चरणस्पर्श, सादर नमस्कार आदि। समाप्ति – आपका बेटा, पोता, नाती, बेटी, पोती, नातिन, भतीजा आदि। (2) अपने से छोटों या बराबर वालों के लिए- प्रशस्ति – प्रिय, चिरंजीव, प्यारे, प्रिय मित्र आदि। अभिवादन – मधुर स्मृतियाँ, सदा खुश रहो, सुखी रहो, आशीर्वाद आदि। समाप्ति – तुम्हारा, तुम्हारा मित्र, तुम्हारा हितैषी, तुम्हारा शुभचिंतक आदि। अनौपचारिक-पत्र का प्रारूप- (प्रेषक-लिखने वाले का पता) ……………… दिनांक ………………. संबोधन ………………. अभिवादन ………………. पहला अनुच्छेद ………………. (कुशल-मंगल समाचार) दूसरा अनुच्छेद ……….. (विषय-वस्तु-जिस बारे में पत्र लिखना है) तीसरा अनुच्छेद ……………. (समाप्ति) प्रापक के साथ प्रेषक का संबंध प्रेषक का नाम …………….

1Thank You

ANSWER

Format of aupchaarik patr??

Posted by Confusion ??? Master ??? 4 years, 9 months ago

CBSE > Class 10 > हिंदी ए

1 answers

Sia ? 4 years, 9 months ago

औपचारिक पत्र उन्हें लिखा जाता है जिनसे हमारा कोई निजी संबंध ना हो। व्यवसाय से संबंधी, प्रधानाचार्य को लिखे प्रार्थना पत्र, आवेदन पत्र, सरकारी विभागों को लिखे गए पत्र, संपादक के नाम पत्र आदि औपचारिक-पत्र कहलाते हैं। औपचारिक पत्रों की भाषा सहज और शिष्टापूर्ण होती है। इन पत्रों में केवल काम या अपनी समस्या के बारे में ही बात कही जाती है।

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ANSWER

Why democracy is a less effective government than other forms of government ?

Posted by Ujjawal Mittal 5 years, 3 months ago

CBSE > Class 10 > Social Science

1 answers

Yogita Ingle 5 years, 3 months ago

Some people think that democracy produces a less effective government. It is true that non-democratic rules are very quick and efficient in decision making and implementation. It is because they do not bother about deliberation in assemblies or worry about majorities. Democracy is based on the idea of deliberation and negotiation. So, some delay is bound to take place. But because it follows procedures, its decisions may be more acceptable to the people and more effective. Democracy ensures that decision making will be based on norms and procedures. A citizen who wants to know if a decision was taken through the correct procedures can find this out. This is not seen in a non-democratic government.

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ANSWER

4 men and 6 boys can finish a piece of work in 20 days, while 3 men and 4 boys can finish it in 28 days. Find the time taken by 1 man alone and 1 boy alone.

Posted by Charvi Sangwan 4 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 9 months ago

The time taken by one man alone is 140 days and the time taken by one boy alone is 280 days .

Step-by-step explanation:

Let time taken by one man alone be = x days

Let time taken by one boy alone be = y days

According to question

.......(1)

and .......(2)

Solve equation (1) and (2) by eliminating,

Multiply equation (1) by 2 and equation (2) by 3 then subtract

...... (3)

.......(4)

Subtract equation (4) from equation (3)

so, the time taken by one man alone is 140 days

Put value of x in equation (1)

Subtract both the sides by

Multiply both the sides by

Multiply both the sides by 280,

so, the time taken by one boy alone is 280 days

Therefore, the time taken by one man alone is 140 days and the time taken by one boy alone is 280 days .

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ANSWER

The sum of 2 number is 8 and the sum of their reciprocal is 8/15. Find the numbers.

Posted by Charvi Sangwan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

Let one number be X. The other number be Y.

GIVEN,

x+y=8

x=8-y ---------------(1)

1/x+1/y=8/15

BY SIMPLIFING 1/x+1/y=8/15 WE GET,

(x+y)/xy=8/15

FROM (1) WE GET,

8/8y-y²=8/15

y²-8y+15=0

(y - 3)(y - 5) = 0

y = 3 or 5

WE KNOW THAT x+y=8

When y=5, x=3

When y = 3, x = 5

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What is meaning of glaciers

Posted by Keshav Pandey 5 years, 3 months ago

CBSE > Class 10 > Social Science

2 answers

Harini S 5 years, 3 months ago

Glacier means a large mass of ice that moves slowly

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Yogita Ingle 5 years, 3 months ago

Glacier is a slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles.

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ANSWER

Oliver Lutkins‟ mother laughs at them as she chases them away, why?

Posted by Saripilli Sanjana 5 years, 3 months ago

CBSE > Class 10 > English Language and Literature

2 answers

Tanu Choudhary # 5 years, 3 months ago

Lutkins' mother laughs at them as she chased them away because she knew the reality that his son, Lutkins, pretends to be bill and is trying to save himself from the lawyer and she glads to find her son so smart. She also laughed on the lawyer as she saw him frightened from her.

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Yogita Ingle 5 years, 3 months ago

Lutkins’ mother was not ready to tell them anything about Lutkins’. She tried to avoid their enquiry. When she ceune to know about the purposes of the narrator, she got furious. She went to the kitchen and came out with an iron rod. She marched towards them with a threat. They had to retreat from there

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ANSWER

Science ke control and coordination chapter me kya kya pdhna h

Posted by Pihu ✨ 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Pankaj Verma 5 years, 3 months ago

But human brain is very imp topic for class 12,so vo pardh lena

1Thank You

Shekhar Kumar 5 years, 3 months ago

Control and coordination is deleted

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Keshav Pandey 5 years, 3 months ago

Nothing Full chapter deleted

1Thank You

ANSWER

We do not clean ponds or Lakes but an aquarium need to be cleaned periodically. Why??

Posted by Swarnima Chauhan 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

An aquarium is an artificial ecosystem and the organisms present in it are selective and maintained in a restricted environment. In the Aquarium the uneaten food as well as the waste generated by the fishes mixes with the water and is left untreated due to the lack of decomposers. The waste materials thus accumulate in the water making it toxic. Hence an aquarium has to be cleaned after regular intervals.

On the other hand, a pond or a lake ecosystem is a natural ecosystem and the types of organism present in it is balanced. The waste produced in this ecosystem serves as the food material for the decomposers and is thus eliminated by them from the water. This ensures a balance in the water body and keeps the water clean and thus does not require physical cleaning.

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ANSWER

About nag panchami in Sanskrit

Posted by Ashreeta Das 5 years, 3 months ago

CBSE > Class 10 > संस्कृत (शेमुषी)