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What are irrational number? Give example?

Posted by Kishore Nayak 5 years, 5 months ago

CBSE > Class 09 > Mathematics

4 answers

45516111? 46 5 years, 5 months ago

Irrational number s are prime numbers and can't write in the form of p/ q......

1Thank You

Kritika Singh 5 years, 5 months ago

Irrational no.s are those which are not rational????

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Yogita Ingle 5 years, 5 months ago

Irrational numbers: Irrational numbers are those which can’t be expressed in fractional form, i.e., in pq form. They neither terminate nor do they repeat. They are also known as non- terminating non-repeating numbers.

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Shambhavi Srivastav 5 years, 5 months ago

The number which can't be expressed as p/q where p and q are integers and q not equal to 0.Eg √3,√5

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ANSWER

Factorise 2x^2-7x-15

Posted by Brije Mohan Singh 5 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Veera Sharma 5 years, 5 months ago

2x² -7x -15 = 2x² - 10x +3x-15 = 2x(x - 5)+3(x - 5) (taking common) = (2x + 3)(X - 5)

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Yogita Ingle 5 years, 5 months ago

2x² - 7x - 15
= 2x² - 10x + 3x - 15
= 2x( x - 5) + 3 (x - 5)
= (2x + 3) ( x-5 )

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ANSWER

If Sn denotes the sum of n terms of an AP whose common difference is d and 1st term is a. Find Sn – 2Sn – 1 + Sn – 2.

Posted by Technical 6G World 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 5 months ago

{tex}{\mathrm T}_\mathrm n\;=\;{\mathrm S}_\mathrm n\;-\;{\mathrm S}_{\mathrm n-1}{/tex}
{tex}{\mathrm T}_{\mathrm n-1}\;=\;{\mathrm S}_{\mathrm n-1}\;-\;{\mathrm S}_{\mathrm n-2}{/tex}
{tex}{\mathrm S}_\mathrm n\;-\;2{\mathrm S}_{\mathrm n-1}\;+\;{\mathrm S}_{\mathrm n-2}\;=\;{\mathrm S}_\mathrm n\;-\;{\mathrm S}_{\mathrm n-1}\;-\;{\mathrm S}_{\mathrm n-1}\;+\;{\mathrm S}_{\mathrm n-2}{/tex}
= {tex}({\mathrm S}_\mathrm n\;-\;{\mathrm S}_{\mathrm n-1})\;-\;({\mathrm S}_{\mathrm n-1}\;-\;{\mathrm S}_{\mathrm n-2}){/tex}
= {tex}({\mathrm T}_\mathrm n\;-\;{\mathrm T}_{\mathrm n-1}){/tex}
= d

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Area of tringal

Posted by Priyanshu Singh 5 years, 5 months ago

CBSE > Class 09 > Mathematics

4 answers

Veera Sharma 5 years, 5 months ago

We can use herons formula OR 1/2 base ×height

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Rudrani Kumari 5 years, 5 months ago

Or herons formula√s(s-a)*(s-b)*(s-c): where s=a+b+c/2

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Rudrani Kumari 5 years, 5 months ago

1/2*base*height

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Shambhavi Srivastav 5 years, 5 months ago

1/2 *Base * height=area of right angle triangle

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ANSWER

Divide 7th root 10 by 7th root 2

Posted by Udit Yadav 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Shambhavi Srivastav 5 years, 5 months ago

7 root 10 by 7 root 2,√10by √2 , √2*√5/ √2 , √ 5 is answer

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ANSWER

If both x-2 and x-1/÷

Posted by Ayush Padhiary 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

X^3+3x^2+3x+1÷x+1

Posted by Chandni Rai Gupta 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Describe about euclid

Posted by Muskan Yadav 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 5 years, 5 months ago

The word 'Geometry' is derived from the Greek words 'Geo' means 'Earth' and 'Metron' means to 'Measure'. Around 325 BC Euclid, a teacher of mathematics at Alexandria in Egypt, collected all the known work and arranged it in his famous treatise, called 'Elements'. He divided the 'Elements' into thirteen chapters, each called a book. These books influenced the whole world's understanding of geometry for generations to come. Euclid listed 23 definitions in book 1 of the 'Elements'.

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2√6/√2+√3 +6√2/√6+√3- 8√3/√6+√2

Posted by Shubhangi Mozarkar 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If x =3+2 root 2 find a= x + 1/x and b= x square +1/x square

Posted by Priyanshu Singh 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Which of is factors of (x+y)3 - (x3+y3)

Posted by Sachin Panwar 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

how we draw root76 on no. line

Posted by Harsh Shrivas 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

For what value of p the point (p,2) lie on the line 3x+y=11

Posted by Brije Mohan Singh 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

A cube plus b cube ka whole squer

Posted by Prabhu Narayan 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Bibek Pokhrel 5 years, 5 months ago

a ka power 6 plus 2 into a cube into b cube plus b ka power 6

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If 2-root 3 find the value of x+1/x to the whole cube

Posted by Ayush Raj Sinha 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Ayush Raj Sinha 5 years, 5 months ago

If x=2-root 3 Then 1/x=1/1-root 3 1/2-√3×2+√3/2+√3 2+√3/2 to the power 2-√3 to the power 2 2+√3/4-3 2+√4/1 2+√4 Now: x+1/x to the whole cube =(2-√3)+(2-√3) (X+ 1/x) to the whole cube=2+2 (X+1/x) to the whole cube =4 X+1/x to the whole cube=4 to whole cube(squaring both side) X cube +1/x cube +3×4=64 X cube +1/x cube=64-12 X cube +1/x cube=52

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Are the square roots of all positive integers irrational?

Posted by Mayank Shrivastava 5 years, 5 months ago

CBSE > Class 09 > Mathematics

5 answers

Bibek Pokhrel 5 years, 5 months ago

No. Just take a example as 9 which is a positive integer but its square root is 3 which is a rational number...

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Sahil 4832 5 years, 5 months ago

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Varsha Raj 5 years, 5 months ago

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Vaishnavi Patil 5 years, 5 months ago

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Munna Kumar 5 years, 5 months ago

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Factorise 4x^2+2x+6

Posted by Tushu Ura 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Ayush Raj Sinha 5 years, 5 months ago

4x^2+6x-4x+6 2x(2x+3)-2(2x+3) (2x+3)(2x-2)

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ANSWER

find 5 rational number between 5upon 7 and 3 upon 4

Posted by Mahek Soni 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Kashika Khuranaa.. ? 5 years, 5 months ago

22/28 ,24/28 25/28 27/28, 29/28

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ANSWER

Give 2 rational numbers lying between 0.23233233323333 .......and 0.21211211121111..........

Posted by Guru Randhava 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Kritika Singh 5 years, 5 months ago

0.223232322322223

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Divide x^3+4x^2-3x-10 by x+1 and verify the remainder obtained by remainder theorem

Posted by Krishna Khaneja 5 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Krishna Khaneja 5 years, 5 months ago

Right answer?

2Thank You

Krishna Khaneja 5 years, 5 months ago

1Thank You

ANSWER

simplify(81/36)-3/4 or(625)0.25or(625)28/100

Posted by Bharti Sankhla 5 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Bharti Sankhla 5 years ago

L.C.M of 5 to 15

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Bharti Sankhla 5 years, 5 months ago

Find the zero of polynomial (i) x+1+xqubrut2 +4x+3

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ANSWER

Co prime number

Posted by Ankit Madhu 5 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Lalitha Dhulipala 5 years, 5 months ago

The numbers which have only 1 common factor each. Example: 5 and 7, 4 and 5 etc

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Vaishnavi Patil 5 years, 5 months ago

Co prime no are those who have common factor only 1

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2^√13,3^√17,6^√27 find greatest and smallest number

Posted by Girraj Siingh 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Divide p(x) by q(x) and verify dividend = divisor × quotient + remainder. 1. p(x) = 9x

Posted by Anushka Khadolia 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

35-{23-}19-(15-x)}]=12×2÷12

Posted by Aditya Sikarwar 5 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is communitative property

Posted by Arun Ganesan 5 years, 5 months ago

CBSE > Class 09 > Mathematics

3 answers

Shambhavi Srivastav 5 years, 5 months ago

Two numbers can be added, multiplied in any order. He 2+3=3+2 ,both are equal to 5 .

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Faiq Ahmed 5 years, 5 months ago

A*b=b*a

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Kap Sharma 5 years, 5 months ago

A+b=b+a

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ANSWER

Rationalise the denominator of 1/√2.

Posted by Abcdefgh20 Kumar 5 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Ayush Raj Sinha 5 years, 5 months ago

1\√2×√2/√2 √2/√2^2 √2/2 Ans

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Yogita Ingle 5 years, 5 months ago

{tex}\frac1{\sqrt2}\times\frac{\sqrt2}{\sqrt2}=\;\frac{\sqrt2}{\sqrt4}=\;\frac{\sqrt2}2{/tex}

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ANSWER

Prove that the sum of triangle is 180

Posted by Mayaukh Kakoti 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Kap Sharma 5 years, 5 months ago

Draw a triangle on a paper and mark the angles then cut the marked angles .place these angles in semicircle form on a scale .you will see a semicircle with 180 degree

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How to find median and mode missing frequencies

Posted by Chunduri Shunmukh 5 years, 5 months ago

CBSE > Class 09 > Mathematics