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Maths class ix

Posted by Roshni Di Esh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Posted by Uttam Swain 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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yyyytyyyrwryyyyty

Posted by Uttam Swain 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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Sec A + tan A = 4 then find cos A , tanA & sin A ?

Posted by Anirudh Sharma 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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3x-7=2/3 (x+7)

Posted by Rudra Naini 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Amar Kumar 8 years, 4 months ago

{tex}\eqalign{ & 3x - 7 = {2 \over 3}{\rm{ }}\left( {x + 7} \right) \cr & {\rm{9x - 21 = 2x + 14}} \cr & {\rm{9x - 2x = 14 + 21}} \cr & {\rm{7x = 35}} \cr & {\rm{x = 5}} \cr} {/tex}

5Thank You

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The cost of a notebook is twice greater than the cost of pen. Write a leniar equation in two veriable to represent the statement

Posted by Akky Kumar 8 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Raghav Viswa 8 years, 4 months ago

Let the cost of pen be x Then the cost of notebook be y ° 2x=y ° °

1Thank You

Amar Kumar 8 years, 4 months ago

Let the cost of pen is x

Cost of notebook is y

so y=2x

3Thank You

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How to Mack at.20 cricket match in histogram

Posted by Alwin Anthnoy 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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If a=12 & a+b = 30 b?

Posted by Raj Jaiswal 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Shruti Rani 8 years, 4 months ago

a+b=30. 12+b=30. b=30-12. b=18

2Thank You

ANSWER

12@5=9_√

Posted by Kunal Gupta 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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655+52

Posted by Apurva Gupta 8 years, 4 months ago

CBSE > Class 09 > Mathematics

9 answers

Yashleen Kaur 8 years, 4 months ago

Easy 707

0Thank You

Abhishek Bhatt 8 years, 4 months ago

707

1Thank You

Aditya Panday 8 years, 4 months ago

707

0Thank You

Shilpi Singh 8 years, 4 months ago

Sorry 707

0Thank You

Shilpi Singh 8 years, 4 months ago

702

0Thank You

Shivansh Agrawal 8 years, 4 months ago

707

0Thank You

Abp Rebels 8 years, 4 months ago

Its so easy .707

0Thank You

Sahana Chaudhari 8 years, 4 months ago

707

0Thank You

Shreya Chinnu 8 years, 4 months ago

707

0Thank You

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Prove opposite the angles of parallelogram are equal

Posted by Prathiksha Yadav 8 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Yashvi Khandelwal 8 years, 4 months ago

By using this theorem diagonal of a parallelogram divided it into 2 congurent triangle . Now use the alternate angles theorem . Now it can be solved

0Thank You

Abhishek Bhatt 8 years, 4 months ago

You can see this answer from rd Sharma book

0Thank You

Kundan Kumar 8 years, 4 months ago

Yaar. You can see any book of math of class9. U will get the ans of this question

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In a quadrilateral ABCD ,CO and DO are bisector of angle c and angle D;prove that angle COD =1/2( angleA+angleB)?

Posted by Kashish Shah 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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Complementry angles are those angleswhose sum are between0 and 90degree or complemetry angles are those angles whose sum are exactly 90degree

Posted by Shivansh Garg 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Kundan Kumar 8 years, 4 months ago

Exactly 90°

0Thank You

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Give example oftwo irrational number Whose different is rational

Posted by Lakshya Jain Jain 8 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Kundan Kumar 8 years, 4 months ago

✅2-✅2=0.And 0 is a rational no. Becoz 0 can be written in form of 0/1 and both are integer so

1Thank You

Amf Amf A 8 years, 4 months ago

Huuu

1Thank You

Lakshya Jain Jain 8 years, 4 months ago

Vxhdj

1Thank You

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Give me mathpaper format for 9th 2017-2018

Posted by Shubhangi Sarode 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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Give me some extra questions of children 15

Posted by Avichal Gogna 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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5×6×67÷5-56×92

Posted by Vishal Panghal 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Chetna Rawal 8 years, 4 months ago

-4750

1Thank You

ANSWER

surface area of sphere

Posted by Kunal Gupta 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Yash Upreti 8 years, 4 months ago

4πr2

1Thank You

ANSWER

19524

Posted by Bhavya Taparia 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

How can I construct a kite using it's side=4.5cm and diagonals of measure 8.4cm and 5.8cm?

Posted by Nehal Ashraf 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is the probility

Posted by Shivang Satnalika 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Aditi Shandilya 8 years, 4 months ago

Chances of outcome

1Thank You

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AB and CD are two chords of a circle whose centre is O and their intersect each other at p.if PO bisects the angle APD then prove that AB=CD.

Posted by Vaishnavi Priya 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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You can show me 2nd term exam paper (Please)

Posted by Kunal Sharma 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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The sum of first n terms of an AP is given by Sn=2n2+3n find sixteenth term of the AP

Posted by Sourav Choudhary 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Mohit Sharma 8 years, 2 months ago

Solution:
Let an be the nth term & Sn be the sum of first n terms.

Given:
Sn = 2n²+3n

an = S(n) - S(n-1)

=2n²+3n -[ 2(n-1)²+3(n-1)]

= 2n²+3n -[2(n²+1-2n)+3n -3]

= 2n²+3n -[2n²+2-4n + 3n -3]

= 2n²+3n -2n²+4n-3n -2+3

= 2n²+2n²+3n -3n +4n -2+3

= 4n +1

an = 4n+1

a16= 4×16 +1= 64+1= 65

Hence, the 16th term of an AP is 65