CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

Solution: Following are the data we can collect in our day-to-day life which are around us Number of houses in our housing society. Monthly grocery expenses of our home. Number of people who have used e-services of the state govt. over a year. Number of students who have enrolled for the Math Olympiad in our school. Population increase over the decade in our city.

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In the adjoining figure three coplanar lines AB ,CD and EF intersect at a point O.Find line value of x.Hence ,find AOD,COF and AOF

Posted by Utkarsh Shukla 4 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

(a+b)^2=

Posted by Sri Satya Mani Hemanth Policherla 4 years, 5 months ago

CBSE > Class 09 > Mathematics

4 answers

Ashwini M 4 years, 5 months ago

a²+b²+2ab

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Ayush Yadav 4 years, 5 months ago

a^2 + b^2 + 2ab

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Karan Baid 4 years, 5 months ago

(a+b)2 (?+?)(?+?) ?2+2??+?2

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Aayush Ranjan 4 years, 5 months ago

a2+b2+2ab

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What is linear pair of angles

Posted by Laweibabha Khongmawloh 4 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Rihas Ror Ror 4 years, 5 months ago

If the non -common arm

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Mahi Mishra 4 years, 5 months ago

The angles which are made in a straight line and their sum is 180 degree.

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prove that the sum of angles of a regular hexagon is 720 degree

Posted by Amrutapatil Virat Kohli 4 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Chaithanya Kumar 8Th Class 4 years, 5 months ago

We know that sum of external angles of a polygon is 360°. Sum of both interior and exterior in a hexagon = 180×6 = 1080° Sum of interior angles=1080-sum of exterior angles =1080-360 =720°

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Utkarsh Shukla 4 years, 5 months ago

Ans is 550 degree right angle

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x²-6x+9=0

Posted by Thiraveyan.M M.Thiraveyan 4 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Chaithanya Kumar 8Th Class 4 years, 5 months ago

Zeroes are 3,3

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WHAT CAN THE MAXIMUM NUMBER OF DIGIT BE IN THE REPEATING BLOCK OF DIGIT IN THE DETAILS EXPANSIONS OF 1/17 perform the division to check your answer

Posted by Nishu Singh 4 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

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2×3×1⁴

Posted by Ytu Sharma 4 years, 5 months ago

CBSE > Class 09 > Mathematics

5 answers

Ayush Yadav 4 years, 5 months ago

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Shani Singhyaduvansi 4 years, 5 months ago

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Vanshika Agarwal 4 years, 5 months ago

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9F23 Ragul.K 4 years, 5 months ago

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Account Deleted 4 years, 5 months ago

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An isosceles triangle has area 8 cm square. Then the length of it's hypotenuse is

Posted by Kipa Sarah 4 years, 5 months ago

CBSE > Class 09 > Mathematics

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Maths ch 4 exercise 4.3 &4.4

Posted by Priyanka Meena 4 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Ipshita Kumari 4 years, 5 months ago

Draw the graph of each of the following linear equations in two variables x+y=4

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Priyanshu Mourya 4 years, 5 months ago

Hlo

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Difination of polynomial

Posted by Dyna Ashish Gupta 4 years, 5 months ago

CBSE > Class 09 > Mathematics

3 answers

Keshav Singh 4 years, 5 months ago

????

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Anamika Sharma 4 years, 5 months ago

A Polynomial p(x) is one variable x is an algebraic expression in x of the form p(x) .

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Chaithanya Kumar 8Th Class 4 years, 5 months ago

Definition of polynomial : The algebraic expression having terms more than or equal to one is called polynomial

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(3x+4y)

Posted by Samson Sabar 4 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Mahi Mishra 4 years, 5 months ago

This question can not be solve because there are 2 variables at a same side.

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Ashish Kumar 4 years, 5 months ago

12xy

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The side of triangle are 8cm, 11cm, 13cm . What is it's area?

Posted by Siya Tyagi 4 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Shrishti Rathore 4 years, 5 months ago

43.81

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Give an example of each, of two irrational numbers whose: (i) difference is a rational number. (ii) difference is an irrational number. (iii) sum is a rational number. (iv) sum is an irrational number. (v) product is a rational number.

Posted by K. Sravana Nanda Chaitanya 4 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Chaithanya Kumar 8Th Class 4 years, 5 months ago

(1) √2,√2 (2)√2, -√2 (3)√2, -√2 (4)√2,√2 (5)√2, √2

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The floor of a rectangular hall has a per

Posted by Amit Kumar 4 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Amit Kumar 4 years, 5 months ago

Exercise -13. 1

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Herons formula notes

Posted by Kavya Nidhi 4 years, 5 months ago

CBSE > Class 09 > Mathematics

3 answers

Sapna Lakhera 4 years, 5 months ago

S(semi perimeter)=a+b+c ______ 2 √s(s-a)(s-b)(s-c)

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Chaithanya Kumar 8Th Class 4 years, 5 months ago

Herons formula =√s(s - a)(s - b)(s - c) Where a, b, c are sides of triangle S is a+b+c/2 (or) semi perimeter

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Avni Sharma 4 years, 5 months ago

Please check in the math subject and slide down you will find the chapter Heron's Formula click on that You will see the ' CBSE revision notes ' click on that you will find all the notes of heron's formula

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✓3 +5

Posted by Lokender Singh 4 years, 5 months ago

CBSE > Class 09 > Mathematics

4 answers

Mahi Mishra 4 years, 5 months ago

2√2 will be the correct answer because*√3+5= √8=√2×2×2 One 2 will be out of the root because there is one pair of √2 so 2×√2=√2* Hope u have understood

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Ashish Kumar 4 years, 5 months ago

5√3

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Bhavna Sharma 4 years, 5 months ago

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Karan Baid 4 years, 5 months ago

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Find the co-ordinates of fourth vertex of rectangle ABCD whose three vertices in order are A(-5,0); B(5,0) and C(5,2).

Posted by Samuel Kashyap Ji 4 years, 5 months ago

CBSE > Class 09 > Mathematics

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Classify the following number as rational or irrational : 2 ) (3+√23)-√23 =

Posted by Sagar Prasad 4 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Pra Jit 4 years, 5 months ago

(3+√23)-√23 ,(+√23 will be cancelled with -√23) and the last answer is 3 we can write 3 in the form 3/1, so hence it is a rational number.

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Engineer equation in one variable all chapter revision and dash

Posted by Pawan Singh 4 years, 5 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Every irrational number is a real number. Is it true or false .

Posted by Rohini Prajapati ..... 🤪 4 years, 5 months ago

CBSE > Class 09 > Mathematics

5 answers

Karan Baid 4 years, 5 months ago

Every irrational number is a real number. This statement is true because the set of real numbers consists of rational numbers and irrational numbers. For example, √2 is an irrational number which is also a real number. Thus, irrational numbers are a subset of real numbers.

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Khushi K Patel 4 years, 5 months ago

Ya,true

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Trisha Verma 4 years, 5 months ago

True

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Om Shinde 4 years, 5 months ago

True because complete rational and irrational numbers is called real numbers

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Chaithanya Kumar 8Th Class 4 years, 5 months ago

True because the complete rational and irrational numbers is called real numbers

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In triangle ABC , AB =AC . The value of x is

Posted by Pari Agrawal 4 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Om Shinde 4 years, 5 months ago

The value of x is 130 degree

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Rohini Prajapati ..... 🤪 4 years, 5 months ago

The value of x is 130° .

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Ncert exercise 7.1 question 1

Posted by Aleeza Aleeza 4 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Ipshita Choyal 4 years, 5 months ago

Given: In quadrilateral ABCD, AC=AD and AB bisects Angle A. To prove: ∆ABCD=∆ABCD Proof: In ∆ABC and ∆ABD AC=AD [Given] Angle BAC = Angle BAD[• AB bisects Angle A] AB=AC [Common] • Angle ABC= Angle ABD [ By SAS Congruency] Thus BC=BD [By CPCT].

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What is square root of 25

Posted by Sameer Sinha 4 years, 5 months ago

CBSE > Class 09 > Mathematics