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If abc = 1

Posted by Ranvir Longia 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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Why mathematics is important

Posted by Tushar Kaushik 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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Wha is a quadilatetal

Posted by Magesh Sekar 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Kyathi Subha Manohar Konathala 8 years, 6 months ago

A closed figure bounded by 4 sides

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If 2a = 3b = 6c then show that c=ab/a+b

Posted by Yuvi 172J 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Mohit Sharma 8 years, 2 months ago

If 2∧a=3∧b=6∧c, then prove that c=ab/a=b
let 2∧a=3∧b=6∧c=d
so,2∧a=d
⇒d∧1/a=2----------------eq 1.
and 3∧b=d
⇒d∧1/b=3----------------eq 2.
and also 6∧c=d
⇒d∧1/c=6-----------------eq 3.
we know that 6=2×3-----------------eq 4.
now put value of 2, 3 and 6 from eg. 1,2 and 3
we get d∧1/a × d∧1/b = d∧1/c
d(1/a=1/b) = d∧1/c
so, 1/c = 1/a + 1/b ⇒1/c = (b+a) / (ab)
⇒c=ab / a+b hence proved

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Prove that if two lines intersect , the vertically opposite angles are equal

Posted by Suruthi Maran 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Divyanshu Agrawal 8 years, 6 months ago

The question is takenfrom ncert book so see on book don't hate oversmart

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Derive the area of issues triangle by Heron's formula

Posted by Dinesh Sharma 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Divyanshu Agrawal 8 years, 6 months ago

I don't now this ans do anything you will get answer

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1000+5678

Posted by Suhana Khan 8 years, 6 months ago

CBSE > Class 09 > Mathematics

2 answers

Isha Mandpe 8 years, 6 months ago

1000+5678=6678

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Rishi Jaiswal 8 years, 6 months ago

6678

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How many linear equation in x and y can be satisfied by x=1 y=2.

Posted by Arjit Choudhary 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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What is a motion

Posted by Srishti Puranik 8 years, 6 months ago

CBSE > Class 09 > Mathematics

3 answers

Isha Mandpe 8 years, 6 months ago

If an object changes its position with respect to surroundings,then that object is said to be in motion. On the other hand,if an object does not change its position with respect to surroundings ,then that object is said to be at rest.

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Utkarsh Jaiswal 8 years, 6 months ago

A body is said to be in motion if it changes its position which time with respect to an observer or reference point

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Divyansh Kimothi 8 years, 6 months ago

Any which is moving is in motion

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5-7

Posted by Harshit Sharma 8 years, 6 months ago

CBSE > Class 09 > Mathematics

3 answers

Isha Mandpe 8 years, 6 months ago

5-7=-2

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Amandeep Kaur Amani 8 years, 6 months ago

-2

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Shruti Thakar 8 years, 6 months ago

-2

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1+1=2

Posted by Priyanshi Singh 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Priyanshi Singh 8 years, 6 months ago

It is correct

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What is cell?

Posted by Krishna Yadav 8 years, 6 months ago

CBSE > Class 09 > Mathematics

3 answers

Suruthi Maran 8 years, 6 months ago

Cells are called as little room in Latin .this was told by Robert Hooke

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Shruti Thakar 8 years, 6 months ago

Cell is a structural and functional unit of life

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Tk Khan 8 years, 6 months ago

It is discovered by Robert Hook with the help of maroshope

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What is median in geometry

Posted by Mohd Areesh 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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In a triangle ABC, AD is bisector of angle A , angle B is twice of angle C , AB=DC . prove that angle A = 72°

Posted by Rutanshi Pradhan 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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Find the value of 8√15÷2√3

Posted by Dev Verma 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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What is conjecuate in number system

Posted by Vaibhav Kumar 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Preeti Mishra 8 years, 6 months ago

Changing the sign of imaginary part is called conjugating of co.plex no.

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AB isparallel to CD and CD to EF. also EA is perpendicular toAB if angle BEF is 55 find the values of x,y,z

Posted by Kiran Arora 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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How many congruence are there

Posted by Neelansha Chouhan 8 years, 6 months ago

CBSE > Class 09 > Mathematics

3 answers

Isha Mandpe 8 years, 6 months ago

In triangle ,there are 6 congruency tests- 1.A-S-A 2.S-S-S 3.S-A-S 4.A-A-A 5.A-A-A 6.Hypotenuse side test

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Nakul Sangal 8 years, 6 months ago

Two more 4-R.H.S. S.A.S

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Nakul Sangal 8 years, 6 months ago

Five congruence 1- A.S.A 2-SSS 3-A.A.S

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125x×5x÷25x

Posted by Md Owais 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Tushar Siingh 8 years, 6 months ago

25x

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If lines pq and rs intersect at point t such that

Posted by Aman Jain 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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What is 1+2×3÷5+9+3×5×2+7÷4+7÷3+×3+7×3+7=k

Posted by Amit Garje 8 years, 6 months ago

CBSE > Class 09 > Mathematics

2 answers

Rounak Bisht 8 years, 6 months ago

90.249

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Khushi Aggarwal 8 years, 6 months ago

90.249

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Find the 51th term of the A. P, whose 1th two terms are -2 and 6

Posted by Amit Pal 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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Factorise 27p3 - 1/216 -9/2p2 +1/4p

Posted by Shivansh Sahu 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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Find the remaider when x3 find the remainder when x cube + 3 X square + 3 X + 1 is divided by X + 5 by long division method

Posted by Hardik Lamba 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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(5+6)*2

Posted by Prateek Sharma 8 years, 6 months ago

CBSE > Class 09 > Mathematics

4 answers

Prateek Sharma 8 years, 6 months ago

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Isha Mandpe 8 years, 6 months ago

(5+6)*2=11*2=22

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Amit Garje 8 years, 6 months ago

(2×5=10)+(2×6=12) =22

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Prateek Sharma 8 years, 6 months ago

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A3-b3-c3

Posted by Anant Singh 8 years, 6 months ago

CBSE > Class 09 > Mathematics

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How can i remember all the identities of polynomials????

Posted by Rounak Bisht 8 years, 6 months ago

CBSE > Class 09 > Mathematics

3 answers

Deepak Madhavan 8 years, 6 months ago

Everyday u revise

1Thank You

Rounak Bisht 8 years, 6 months ago

Miss shreya garje if u think that i dont have brain so for gods sake go to hell??and i have asked a question here to solve my problems not for hearing from a bullshit ......

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Amit Garje 8 years, 6 months ago

It is very easy to learn idintities we learn by mind . Yo have no mind I think so

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Maths theory of chapter 7 all theory

Posted by Gauri Gauri 8 years, 6 months ago

CBSE > Class 09 > Mathematics