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

Ask questions which are clear, concise and easy to understand.

Ask Question

Square abcd is rhombus. If m<bac is 40 find m<adc

Posted by Gunjal Panchal 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If the diagonal of a parallelogram are equal then show it is a rectangle

Posted by Sanjeev Jain 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Yash Arya 8 years, 3 months ago

Given= ABCD is a parallelogram with diagonal AC and BD are equal To prove = ABCD is a rectangle Proof = In triangle ABC and BAD 1. AB = AB ( COMMON ) 2. AC = BD (GIVEN) 3. AD = BC ( OPPOSITE SIDE OF A PARALLELOGRAM ARE EQUAL ) Therefore triangle ABC = BAD ( BY SSS CONGRUENCY) Angle DAB + Angle CBA = 180° [ Therefore the sum of consecutive Angeles of a parallelogram is 180° ] From 1 and 2 Angle DAB = angle CBA = 90° [ Similarly , the other two angles are of 90° each ] HENCE ABCD IS A RECTANGLE

0Thank You

Golua Singham 8 years, 3 months ago

See example 8.7 (page no.141) of NCERT math's book you will definitely et your answer....

0Thank You

ANSWER

Greatest chord of the cricle

Posted by Deepanjali Gupta 8 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Shubh Fojdar 8 years, 3 months ago

DIAMETER

0Thank You

Afzal Siddique 8 years, 3 months ago

Diameter

0Thank You

Deepanjali Gupta 8 years, 3 months ago

Diameter

1Thank You

ANSWER

How are the silver candlesticks important to the bishop

Posted by Devanshu Mishra 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Vivek Verma 8 years, 3 months ago

It is because silver candlesticks was the memory of his mother's after his dying she gave to bishop

1Thank You

Anuska Thakur 8 years, 3 months ago

Coz these candlesticks were the only thing which bishop had as the last memory of his mother.....

1Thank You

ANSWER

The thickness of a metallic tube is1cm and it's outer radius is 11cm .Find the mass of such a 1m long tube if the density of the metal is 7.5gpercm

Posted by Virendra Singh 8 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Nancy Garg 8 years, 3 months ago

38.5

1Thank You

Amanpreet Singh 8 years, 3 months ago

This answer may be right

0Thank You

Amanpreet Singh 8 years, 3 months ago

284.955kg

1Thank You

ANSWER

Cbse last yer que paper set 1 que no 18

Posted by Dilip Kamti 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Golua Singham 8 years, 3 months ago

Plz visit www.ncerthelp.com

1Thank You

ANSWER

Anita has x apples and y mangoes . If no. Of apples is 2 more than thrice the no. Of mangoes then write this information as a linear equation in two variables?

Posted by Amanpreet Singh 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Amanpreet Singh 8 years, 3 months ago

X=2+3y.

5Thank You

ANSWER

Who is the president Of India

Posted by Nisha Patro 8 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Ruchi Kapoor 8 years, 3 months ago

Ram Nath kovind is the president of India

0Thank You

Anuska Thakur 8 years, 3 months ago

It's Ram nath kovind

1Thank You

Golua Singham 8 years, 3 months ago

Vainkiya naidu

0Thank You

ANSWER

If the diagonals of a cyclic quadrilateral are diameters then prove that it is a cyclic quadrilateral.

Posted by Tanmay Shende 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Kartik Kumar 8 years, 3 months ago

The diagonals of a cyclic quadrilateral are diameters then it form 90 degree angles because angle in the semicircle is 90.

0Thank You

ANSWER

If the diagonals of a parallelogram are equal prove that it is a rectangle

Posted by Tanisha Bose 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

1+3

Posted by Pardeep Dahiya 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gourav Sharma 8 years, 3 months ago

A donkey 1+3=4 OK. nonsense

1Thank You

ANSWER

a ball is thrown upward from the ground at tower speed 20m/s there is window in the tower at the height of 15 m from the ground how many times and when will the ball pass the window

Posted by Juhi Sharma 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Yash Garg 8 years, 3 months ago

4/3

1Thank You

ANSWER

factorise :-X(Y^2+Z^2)+Y(Z^2+X^2)+Z(X^2+Y^2)+2XYZ

Posted by Vaibhav Namdev 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is the Formula of isosceles triangle ?

Posted by Dhiraj Kumar 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Asmi Loona 8 years, 3 months ago

a root 4b^2 - a^2 / 4

0Thank You

ANSWER

Solve it by factorisation method a-2√3x-xsquare divided by 3 - xsquare

Posted by Gaurav Kumar 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If 2A=3B=4C Find A:B:C.

Posted by Shweta Singh 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Shweta Singh 8 years, 3 months ago

2a:3b:4c=k 2a=k÷2,3b=k÷3,4c=k÷4 Then k will be cancelled A=1÷2 B =1÷3 C=1÷4 1will be cancelled It will be 2:3:4 We will find the L.C.M now It will be 12 2a =1×12÷2 3b = 1×12÷3 4c= 1×12÷4 2a:3b:4c=6:4:3 Ans......

1Thank You

Satyam Barnwal 8 years, 3 months ago

A=12,B=8,C=6 =12:8:6

1Thank You

ANSWER

XY is a line parallel to side BC of triangle ABC

Posted by Yash Mishra 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

ABCs is a rectangle prove that it is a rhombus

Posted by Priyanshu Kumar 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What will be the interest on Rs 100 for 1 year in a fixed deposit which offers 11.25% per annum simple interest rate?

Posted by Anu Angel 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Prove that..... The four angles of the quadrilateral is 360.

Posted by Piyush Gautam 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Golua Singham 8 years, 3 months ago

Let ABCD be a quadrilateral. Join AC. Clearly, ∠1 + ∠2 = ∠A ...... (i) And, ∠3 + ∠4 = ∠C ...... (ii) We know that the sum of the angles of a triangle is 180°. Angle Sum Property of a Quadrilateral 0Save Therefore, from ∆ABC, we have ∠2 + ∠4 + ∠B = 180° (Angle sum property of triangle) From ∆ACD, we have ∠1 + ∠3 + ∠D = 180° (Angle sum property of triangle) Adding the angles on either side, we get; ∠2 + ∠4 + ∠B + ∠1 + ∠3 + ∠D = 360° ⇒ (∠1 + ∠2) + ∠B + (∠3 + ∠4) + ∠D = 360° ⇒ ∠A + ∠B + ∠C + ∠D = 360° [using (i) and (ii)]. Hence, the sum of all the four angles of a quadrilateral is 360°.

3Thank You

Ramu Kevat 8 years, 3 months ago

Vvjj

1Thank You

ANSWER

Prove that the line which is close to the centre of circle is larger

Posted by Kalpana Sidharth 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If cube of 6 cm is made up of 2cm cube find then the number of cube

Posted by Anmol Gill 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

9 add 9

Posted by Pravesh Mishra 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Construct a ---------------------ab-ac=3.5

Posted by Harshit Sanwal 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Nancy Garg 8 years, 3 months ago

How will we draw this on mobile

0Thank You

Harshit Sanwal 8 years, 3 months ago

1Thank You

ANSWER

a-2√3x -x^2 / 3-x^2

Posted by Raghav Mittal 8 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

How I can draw a underoot of5

Posted by Karan Lunawat 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Kashish Goyal 8 years, 3 months ago

Underoot 5=underoot 4+ underoot1 Underoot 5=underroot 2 square + underoot 1 square H=b+p First draw a line 2 cm long and name it A and B. Now draw a 90 degree angle on B and mark it 1 cm and name it c. Then join C and A. It is how one can make underoot of 5.

0Thank You

ANSWER

What is therom

Posted by Dileep Rathour 8 years, 3 months ago

CBSE > Class 09 > Mathematics