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

The average of values of a class limits for a given class.A class mark is also called a mid value or central value (Kenny and keeping 1962, p.14 ) and is commonly denoted class interval , class limits

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Ruchi Bansal 5 years, 1 month ago

Class mark= Upper limit+lower limit/2

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If triangle ABC,AB=AC and angle B=65° then angle C is equal to

Posted by Rajkanya Patil 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Anush Mittal 5 years, 1 month ago

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Satwinder Singh 5 years, 1 month ago

If AB=AC and angle B is 65 then angle C is also 65 because triangle ABC is an isosceles triangle and an isosceles triangle have equal angles opposite to equal sides ...

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Represent-7/5 on the number line

Posted by Laxmi Rajput 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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Draw the graph linear equation in two variable x-y=2

Posted by Avanesh Kumar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Meet Saab 5 years, 1 month ago

How we can draw graph here Mr. ??

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fill in the blanks 0.83458456764

Posted by Paras Puniya 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Meet Saab 5 years, 1 month ago

What? Hm blank is where

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16×2^n+1 - 4×2^n ÷ 16×2^n+2 - 2×2^n+2

Posted by Vaibhavi Mirani 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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If two chords of a circle are equal then their corresponding arcs(semiciecular,minor or major)are cogruent.

Posted by Piyush Kumar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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Rs agarwal ex 12a circles solved theorem no 5

Posted by Piyush Kumar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Aryan Shrivas 5 years, 1 month ago

Given: Two chords of a circle (AB and CD) which are equal to one another. Tp: OE=OF Proof: In triangle AOB and COD AB=CD(GIVEN) OA=OC(RADII OF CIRCLE) OB=OD(RADII OF CIRCLE) So, by SSS congruence rule Triangle AOB IS CONGRUENT TO COD THEREFORE, by cpct OE=OF. HENCE PROVED.............

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If (x-a) is a factor of x8-ax7+x6-ax5+x4-ax3+3x-a+2=0,then find the value of a.

Posted by Rishabh Tamrakar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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Prove that √2 is irrational.

Posted by Shagun Gaur 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 5 years, 1 month ago

Let us assume √2 is rational number.
a rational number can be written into he form of p/q
√2=p/q
p=√2q
Squaring on both sides
p²=2q²__________(1)
.·.2 divides p² then 2 also divides p
.·.p is an even number
Let p=2a (definition of even number,'a' is positive integer)
Put p=2a in eq (1)
p²=2q²
(2a)²=2q²
4a²=2q²
q²=2a²
.·.2 divides q² then 2 also divides q
Both p and q have 2 as common factor.
But this contradicts the fact that p and q are co primes or integers.
Our supposition is false
.·.√2 is an irrational number.

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What is the perfect number after 1

Posted by Adarsh Seth 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Meet Saab 5 years, 1 month ago

Someone can guess My answer✌? can someone guess it my answer if he she have brain

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Meet Saab 5 years, 1 month ago

Its answer is ...... Loading...... That is ?✌

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Anurag Yadav 5 years, 1 month ago

1.2

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Nikita Roster 5 years, 1 month ago

Afcorse the no are2

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Baby Kaur 5 years, 1 month ago

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a3-b3 _ ( a- b)3 +( a - ab + b)

Posted by Aparna Chaturvedi 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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What is the full form of CPCT

Posted by Karan Bungla 5 years, 1 month ago

CBSE > Class 09 > Mathematics

13 answers

Nikhil B 5 years, 1 month ago

Corresponding Part of Congruent Triangles

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Meet Saab 5 years, 1 month ago

CPCT- Corresponding parts of congruent triangle plz like it?

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Anush Mittal 5 years, 1 month ago

Corresponding part of congurent triangle

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Satwinder Singh 5 years, 1 month ago

Corresponding parts of congruent triangles is the full form of CPCT...

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Lakshay Meghvanshi 5 years, 1 month ago

Corresponding part of congruent triangles

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Adarsh Seth 5 years, 1 month ago

Congruent triangle corresponding part

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Rajmanish Sannu 5 years, 1 month ago

Hhhuu

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Ashree Akankhya Lenka 5 years, 1 month ago

Corresponding parts of congurent triangle is the full form of CPCT

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Abhay Thakur 5 years, 1 month ago

Corresponding parts of congruent triangles

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Ayanjyoti Roy 5 years, 1 month ago

corresponding parts of congruent triangles

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Aparna Chaturvedi 5 years, 1 month ago

Corresponding parts of congurent triangles

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Manoj Kumar 5 years, 1 month ago

corresponding parts of congruent trianglles

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Arshad Rasheed 5 years, 1 month ago

Corresponding parts of congruent triangles

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The volume of sphere is 310 .4 cm^3 . Find its radius

Posted by Vansh Meena 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

A.V.M Unnao 2 years, 1 month ago

Volume of sphere =310.4cm^3 4/3πr^3=310.4cm^3 4/3×22/7×r^3=310.4 22×4×r^3=310.4×7×3 88×r^3 =6518.4 r^3=74.0727273 r=4.20027 Or 4.2

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What is probility?

Posted by Rohan Raj 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 5 years, 1 month ago

Probability is the chance of an occurrence of a given event, i.e how likely it is that an event will take place. For example, if we toss a coin, there is 50 percent chance each that it might be heads or tails.

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Jkk

Posted by Anmol Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Tanishk Ghaloth 5 years, 1 month ago

????

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The paint in a certain

Posted by Vansh Singh 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Meet Saab 5 years, 1 month ago

What is full question ?

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Asif Khan 5 years, 1 month ago

किसका जवाब लिखना है

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If the mean of 25 numbers is 8 and 2 is added to each number what would be the new mean

Posted by Kanta Achhani 5 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Aryan Shrivas 5 years, 1 month ago

27 would be the new mean.

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Ritik Pulani 5 years, 1 month ago

10 is the new mean

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Anmol Singh 5 years, 1 month ago

You are from which school?

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The pillars of the temple are cylindrically sbaped.if each pillar has a circular base of radius 20cm anx height 10 m,how much concrete mixture would be required to build 14 such pillar

Posted by Ashish Agrahari 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Ashish Agrahari 5 years, 1 month ago

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Anmol Singh 4 years, 11 months ago

You are from which school?

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X^4+9

Posted by Pranav Pawar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Aditya Sinha 5 years, 1 month ago

X^2)^2 + 3 ^2 can be solv3d to get the correct solution

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Anmol Singh 5 years, 1 month ago

You are from which school?

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A hemispherical dome of a building needs to be painted.if the circumference of the base of the dome is 17.6m,find the cost of painting it ,given the cost of painting is rs 5 per cm2

Posted by Ashish Agrahari 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Anmol Singh 5 years, 1 month ago

You are from which school

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1. If x = 0 and y = k is a solution of the equation 5x-3y=3, find the value of k.

Posted by Adarsh Kumar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

4 answers

Ritik Pulani 5 years, 1 month ago

5x-3y=3 x=0,y=k 5*0-3*k=3 0-3k=3 -3k=3 k=-3/3 k=-1

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Arshad Rasheed 5 years, 1 month ago

K=-1

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Anmol Singh 5 years, 1 month ago

You are from which school

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Ashish Agrahari 5 years, 1 month ago

K ka value 2

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How to take scale for graph ex.14.3 ,7th problem

Posted by Chiru Leku 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Prateek Mishra 5 years, 1 month ago

Bhai is question me kuch bhi ni hai

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Prateek Mishra 5 years, 1 month ago

Plz check out the form

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Prove that equal chords of a circle subtend equal angle at the center

Posted by Ashish Agrahari 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Yogesh Kumar Kashyap 5 years, 1 month ago

Instructions: £=Angle

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Yogesh Kumar Kashyap 5 years, 1 month ago

Given, I)A circle with center O. AB =CD RTP:- £AOB =£COD Proof: In ∆AOB & ∆COD AB=CD (given) OA =OC (radius of circle) OB=OD ( radius of circle) By SSS rule ∆AOB =~∆COD Therefore, By CPCT £AOB =£COD Hence Proved That equal chords of a circle subtend equal angle at center. My name is Lokesh Kashyap

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,find the cost of labelling in the form of it side as 70 cm,50cm,and 60 cm at Rs7 per m

Posted by Anjali Yadav 5 years, 1 month ago

CBSE > Class 09 > Mathematics