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

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The Boys 2 years, 1 month ago

34.732m

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Campaigning regarding girl’s education was organized by students of class IX. Students made (x-5) rows and (3x-4) columns for the rally. Write the total number of students in the form of a polynomial.

Posted by Ram Singh 2 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Deepesh Saharan 2 years, 1 month ago

3x²-9

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Vat Deepak 2 years, 1 month ago

Solving this question

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Patel Nisha 2 years, 1 month ago

I am sansi say it in German

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Find the volume of a cube whose total surface area is 54 cm²

Posted by Kashish Pandit 2 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Kashish Pandit 2 years ago

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Tarun Kumar 2 years, 1 month ago

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Mahesh Kaushik Mahesh Kaushik 2 years, 1 month ago

2+2-4

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Raj Laxmi 2 years, 1 month ago

Total surface area of cube is 6a² Given 6a²=54 a²=54/6 a²= 9 a= 3 Volume of cube is a³ = (3)³=27

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Ss Ss 2 years ago

I don't know please help me

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METHOD OF CONSTRUCTION 1. Take a piece of plywood with dimensions 30cm * 30cm

Posted by Vansh Chandeliya 2 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Ravindra Yadav 2 years, 1 month ago

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Aniket Sah 2 years, 1 month ago

Mid point theorem

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Prove that2+√5

Posted by Ajay Sheoran 2 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Mahesh Kaushik Mahesh Kaushik 2 years, 1 month ago

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2Thank You

Ajay Sheoran 2 years, 1 month ago

2+√5

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Prove that√5

Posted by Ajay Sheoran 2 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Deepesh Saharan 2 years, 1 month ago

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2a-3a+2=0

Posted by Rakshit Rawat 2 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Aryan Garg 2 years, 1 month ago

-a+2

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Rohitha S 2 years, 1 month ago

7a2

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Anu Das 2 years, 1 month ago

7a2

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Show that the line segment joining the mid point of the opposite sides of a quadrilateral bisect each other

Posted by Shiv Singh 2 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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Que 8

Posted by Gargi Gargi 2 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Tanishka Chaudhary 2 years, 1 month ago

Case study questions

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Gargi Gargi 2 years, 2 months ago

If non-parallel sides of a trapezium are equal , prove that it is a cyclic.

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A hollow spherical shell is made up of a metal of density 9.6 gper cm square the external diameter of the shell is 10 cm and it's internal diameter is 9 cm find its volume of the metal contained in the shell, weight of the shell, outer surface area of the shell

Posted by Suhani Chaudhary 2 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

4(a+b)-6(a+b)^2

Posted by Rupayan Dutta 2 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Kabir Thakkar 2 years, 1 month ago

TSA of sphere

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Show and proof mid point theorem

Posted by Mahek Meghani 2 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Arshdeep Kaur 2 years, 1 month ago

A line joining midpoints of any two sides of a triangle is parallel to the third side and a half of third side. GIVEN- a triangle ABC in which D and E mid points of AB and AC. TO PROVE- DE parallel to BC and DE =1 by 2 BC .CONSTRUCTION-draw a line CF parallel to AB and then produce DE to F. PROOF-in 🔺️ ABC and in 🔺️CEF ≈angle 1= angle 2(alternate angles),angle3=angle4(vertically opposite angles),AE=CE(given),so 🔺️ ABC congruence to 🔺️ CEF by AAS congruence condition AD=CF by cpct(1).AD=BD -given (2).from (1)nd (2) DF parallel to BC. DE parallel to BC. DF=BC. DE+EF=BC. (🔺️ ADE congruent to 🔺️ CEF, DE=EF by cpct). 2DE=BC. DE =1/2BC

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1 is Prime number or Composite number

Posted by Abhinav Aryan 2 years, 2 months ago

CBSE > Class 09 > Mathematics

4 answers

Harshdeep Singh 2 years, 1 month ago

Neither prime nor composite

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Palak Singhal 2 years, 1 month ago

It is neither prime nor composite

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Nitheesh T 2 years, 1 month ago

Neither prime nor composite

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Mahek Meghani 2 years, 2 months ago

Prime No.

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The p/q form of 0.3333.....=0.3......

Posted by O Hassangadiya 2 years, 2 months ago

CBSE > Class 09 > Mathematics

5 answers

Twarit Sharma 2 years, 1 month ago

1 3

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Arshdeep Kaur 2 years, 1 month ago

1/3 ans Let the number be x X=0.3.... 10×x=10×0.3... 10x=3.3... 10x=3+0.3... 10x=3+x 10x-x=3 9x=3 X=3/9 X=1/3

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Tanishka Chaudhary 2 years, 1 month ago

Case study questions class 9

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Suraj Sharma 2 years, 2 months ago

What is hrore formula

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Mahendra Singh Tanwar 2 years, 2 months ago

Yes

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ANSWER

6 ousten of 7•1

Posted by Gaivi Khakat 2 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

There are infinite number of lines is it true or false and write statements

Posted by Pranav Lawange 2 years, 2 months ago

CBSE > Class 09 > Mathematics

4 answers

Harshdeep Singh 2 years, 1 month ago

Yes, through a point, infinite lines can be pass

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Priyanshi Patel 2 years, 2 months ago

It is true.

2Thank You

Class 9 2 years, 2 months ago

Yes, it's true .....................

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Class 9 2 years, 2 months ago

Yes, it's true .....................

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What I have to study to clear my basics that help me in class10

Posted by Unknown User 2 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Krishna Kumar 2 years, 1 month ago

Firstly you able to solve all the numerical in science example in the numerical of motion,Force and law of motion, gravity.

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Pranav Lawange 2 years, 2 months ago

You have to clear your basics first and concerned in class it will help you in 10 standard

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Sides of a triangle are in tha ratio Of 12.17.25 and it's perimeter is 540 cm find its area

Posted by Srishti Rajak 2 years, 2 months ago

CBSE > Class 09 > Mathematics

5 answers

Class 9 2 years, 2 months ago

9000 will be correct answer....... ( by using heroen formula) ur answer will come correct

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Valentina Mengu 2 years, 2 months ago

Chapter 15 notes

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Unknown User 2 years, 2 months ago

123

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Himanshu Tyagi 2 years, 2 months ago

123

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Yaminee Rajak 2 years, 2 months ago

123

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Ex 15 a q no 9

Posted by Ishant Kumar Verma 2 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Khushi Khushi Choudhary 2 years, 2 months ago

What is poor

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If x+1/x=3 and x-1/x=5 then find x²-1/x²=?

Posted by Kushagra Singh 2 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Kushagra Singh 2 years ago

Difference between lok Sabha and rajya sabha

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Kalappa ????? 2 years, 2 months ago

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Find the product using identity (x-1/2) × (x+1/2)×( x^2+1/x^2) × (x^4+1/x^4)

Posted by Methra Arumugam 2 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is mole concept?.. (Please answer in brief explanation)

Posted by Ananya Agrawal 2 years, 2 months ago

CBSE > Class 09 > Mathematics

3 answers

Class 9 2 years, 2 months ago

This concept is deleted in 9 studies..... Kindly check it in ur syllabus

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Ayush Singh 2 years, 2 months ago

Chemistry ka

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Ayush Singh 2 years, 2 months ago

To express the amount of any matter in chemical reaction an important SI unit called mole concept

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ANSWER

the perimeter of an isosceles triangle is 32cm the ratio of the equal sides to its base is 3:2 find the area of the triangle

Posted by Account Deleted 2 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Shourya Deep 2 years, 2 months ago

Let the equal side be 'a' and base be 'b', then its perimeter = 2a + b Let 'a' be 3k and 'b' be 2k. A/Q Perimeter = 32cm. ⇒2×3k + 2k = 32cm ⇒8k = 32cm ⇒k= 4cm. Hence, sides of triangles are 12cm, 12cm and 8cm. a=12 cm b=8cm Now, area of isosceles triangle= (b/4) × √(4a²–b²) = 2× √(4×144–64) = 2× √(576–64) = 2× √(512) =2× 16√2 =32√2 Hence, area of triangle is 32√2cm².

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