CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

let √2is a rational number where A and B are co- prime no so, √2=a/b on squaring both side we get 2=a²/b² 2b²=a² 2divides a²=2 divide a a=2c (i) from equation 1 we get 2b²=4a 2 divides 4a = 2 divide 4 so, 2 is a common factor of A and B . from this contriduct √2 is a rational number. hence, √2 is a rational number . 😍😘😍

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Aditya Kapil 2 years, 2 months ago

Broo https://youtube.com/shorts/UJ817_ep0Fc?feature=share

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How to solve problems having to show 3 or 4 digits in ch 1

Posted by Khushi Poonia 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Vaibhav Gupta 2 years, 1 month ago

Kya matlab?

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1. AB is a chord of the circle and AOC is its diameter such that angle ACB = 50 deg If AT is the tangent to the circle at the point A. then find angle BAT is equal to

Posted by Okruchika Rautela 2 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

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10th class ka standard Math ka sample paper set 2 2023

Posted by Riyan Khan 2 years, 2 months ago

CBSE > Class 10 > Mathematics

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A two digit number such that the product of the digit is 16. When 54 is susbtraced from the number , the digital interchanged. Find the number

Posted by Rituka Thakur 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Omya Aryan 2 years, 2 months ago

Let the digits be x and y. Then the number so formed is 10x+y. ATQ, xy=16... also, 10x+y-54=10y+x...Solving these two equations, we get x=8 and y=2. Hence,the number formed is 82.

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Prove that✓5+✓3 is irrational.

Posted by Banty Kumari 2 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Nikita Yadav 2 years, 1 month ago

To prove it let us assume it to be a rational number Rational numbers are the ones which can be expressed in p/q form where p,q are integers and q isn't equal to 0 √3+√5=p/q √3=(p/q)-√5 Squatting on both sides 3=p²/q²-(2√5p)/q+5 (2√5p)/q=5-3-p²/q² 2√5p/q=(2q²-p²)/q² √5=(2q²-p²)/q²*q/2p √5=(2q²-p²)/2pq As p and q are integers RHS is rational As RHS is rational LHS is also rational i.e √5 is rational But this contradicts the fact that √5 is irrational This contradiction arose because of our false assumption So √3+√5 is irrational

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Kulveer Kaur 2 years, 1 month ago

Here's your answer To prove: √3+√5 is irrational To prove it let us assume it to be a rational number Rational numbers are the ones which can be expressed in p/q form where p,q are integers and q isn't equal to 0 √3+√5=p/q √3=(p/q)-√5 Squatting on both sides 3=p²/q²-(2√5p)/q+5 (2√5p)/q=5-3-p²/q² 2√5p/q=(2q²-p²)/q² √5=(2q²-p²)/q²*q/2p √5=(2q²-p²)/2pq As p and q are integers RHS is rational As RHS is rational LHS is also rational i.e √5 is rational But this contradicts the fact that √5 is irrational This contradiction arose because of our false assumption So √3+√5 is irrational

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Tanu Bhardwaj 2 years, 2 months ago

First we let tha root5+ root3 = a upon b [ here a and be are composite no. Where a belongs integer and b is not equal to 0 Then on squaring both side it will we root5^2+root3^2 = a^2 upon b^2. Now it will be 8 = a^2 upon b^2 By cross multiply It will be 8b^2 = a^2 we make it (i) equation Let a=8k Then on squaring we put here a^2 value as 8b^2 8b^2 = 64k^2 on reducing it it will be... b^2 = 8k^2 we make it (ii) equation we see here from equ.(i) and (ii) That this contradict our assumption Therefore root 5 + root 3 is an irrational no. Hence proved!!...... 🥰🤗

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About 11 class entrance exam

Posted by Ishika Singh 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Amrit Chaudhary 2 years, 2 months ago

Be relax , everything will be best.

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297 + 444

Posted by Ankesh Kumar 2 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Anushka Sharma 2 years, 2 months ago

741

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Rithik Tiwari 2 years, 2 months ago

741

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Tanmay Kanani 2 years, 2 months ago

Shut the **** up

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Ankesh Kumar 2 years, 2 months ago

741

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How to find the area of shaded regions

Posted by Vansh Multani 2 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Akm Akm 2 years, 1 month ago

Same as send above

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Anjali _ 2 years, 2 months ago

area of figure — area of non shaded region = area of shaded region

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Pens are sold in pack of 8 and notepads are sold in pack of 12. Find the least number of pack of each type that one should buy so that there are equal number of pens and notepads

Posted by Poorna Vijay 2 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Ankesh Kumar 2 years, 2 months ago

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Abhishek Tiwary 2 years, 2 months ago

Thanks

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Shubh Lakshna Pandey 2 years, 2 months ago

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Find whether decimal expansion of is a terminating or non-terminating decimal. If it terminates, find the number of decimal places its decimal expansion has

Posted by Jay Deshmukh 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhishek Tiwary 2 years, 2 months ago

Thanks

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Find mode 10000-10800 66 10800-11600 67 11600-12400 36 12400-13200 42 13200-14000 68 14000-14800 56 14800-15600 47

Posted by Pawani Pradhan 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhishek Tiwary 2 years, 2 months ago

Thanks

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Circle area

Posted by Ankit Xalxo 2 years, 2 months ago

CBSE > Class 10 > Mathematics

5 answers

Abhishek Tiwary 2 years, 2 months ago

Thans5

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Shubh Lakshna Pandey 2 years, 2 months ago

πr^2

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Rithik Tiwari 2 years, 2 months ago

πr²

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Mangifera Indica 2 years, 2 months ago

πr2

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Ankit Xalxo 2 years, 2 months ago

What is the formula for circle

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/_ACQ=/_ABC

Posted by Rahul Dorata 2 years, 2 months ago

CBSE > Class 10 > Mathematics

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Is Pythagoras theorem came in board ?

Posted by Bushra Aquil 2 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Atharv Tyagi 2 years, 2 months ago

Yes

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Rithik Tiwari 2 years, 2 months ago

Yes brother

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Sumit Raghuwanshi 2 years, 2 months ago

Phythagoras theorem will not come but questions related to pythagoras can come

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Suyash Shubham 2 years, 2 months ago

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If 49x + 51y=499,51x + 49y=501 then find the value of x and y

Posted by Avanish Giri 7117 2 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Banty Kumari 2 years, 2 months ago

X=11/2 and Y=9/2

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Mangifera Indica 2 years, 2 months ago

x=8 and y=2

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Find value of a if remainder is linear polynomial when ax^6-x^5+ax(x+a)+1 is divided by ax^3(ax-1)+1

Posted by Suyash Shubham 2 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Suyash Shubham 2 years, 2 months ago

Upar wlae ke nam pe . Solve kr dijeye ga to bhagwan apko sukh samriddhi dega🙏

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Suyash Shubham 2 years, 2 months ago

Give me answer pls .

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Anshul Choudhary 2 years, 2 months ago

****

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Solve for x 9x-5/8 - 3x-5/5 +7/3 =8/5 - (2x-3/3)

Posted by Krish Sapehiya 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Omya Aryan 2 years, 2 months ago

X= 0.184

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Ifcot theta = 2 find the value of all t ration

Posted by Ankit Chauhan 2 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Aman Chaudhary 2 years, 2 months ago

If cot theta is 2 We can write cot theta =2/1 We have base and perpendicular Then we cam find the third side by pythagoras theorem (Hypo)sq =base sq+perpendicular sq Now put the values u will get your ans ☺️

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Account Deleted 2 years, 2 months ago

Sin theta = 1/√5 Cos theta = 2/√5 Tan theta = 1/2 Cosec theta = √5/1 Sec theta = √5/2

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Find the area of rhombus if its vertex 3,0,4,5,-1,4 and -2,-11,taken in order

Posted by Shailesh Kumar 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Siddh Jain 2 years, 2 months ago

khud solve kar na bkl

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Class 10th ka sample papers set 2 2022-2023

Posted by Riyan Khan 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Aryan Anand Patel 2 years, 2 months ago

Not yet came

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If one root of the quadratic equation X ^2 + 7 x + 12 is -4 then the other root is given by

Posted by Tanisha Shakya 2 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Ashlesha Sohani 2 years, 2 months ago

Nice question Answer of this question is -3 you can solve this using relationship between zeroes and coefficients of a polynomial We know, a+b (alpha + beta) = -B/A ab(alpha ×beta) = C/A Therefore in the quadratic equation x^2+7x+12 -4 + b = -7/1 b=-3 And to verify -4×b = 12/1 b= 12/-4 b= -3 Hope you got it ☺️

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Harman Joiya 2 years, 2 months ago

Joiya

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Aryan Indani 2 years, 2 months ago

Answer is -3 as a'+b= -b/a here we have the value of a' ie. One zero and also the value of b and a hence by solving u will get answer

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The top of table 2m35cm by 1 m 60cm .what is the area in square meter

Posted by Kritika 😃 Dubey 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhinya Majmundar 2 years, 2 months ago

The area of the top of the table is 3.76 sq m

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Two men on either side of a 75m high building and in line with base of building observe the angels of elevation of the top of the building as 30° and 60° Find the distance between the two men (use√3=1.73

Posted by Nitish Kumar 2 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Siddh Jain 2 years, 2 months ago

🗿 answer is 173m

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Aryan Indani 2 years, 2 months ago

By using tan30 and tan60 values u will get the distances of both men as 129.75 and 43.25

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Aryan Indani 2 years, 2 months ago

Answer will be 173m

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In an AP the sum of the first n terms is n/2( 3n + 5). Find the 25th term of the AP

Posted by Manisha Kumari 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Aryan Indani 2 years, 2 months ago

Ans: 76 firstly put the value of n as 1 then u will get A1 then put n=2 then u will get the value of A1+ a2 then after receiving value of a2 find d then by formula of n therms u will get the value of 35 terms

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What are the portions deleted from chapter Introduction to trigonometry?

Posted by Fidha Sunil 2 years, 2 months ago

CBSE > Class 10 > Mathematics