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

We conclude that the line joining the mid point of two sides of a triangle is equal to half the length of the third side. The conserve of this theorem states: If a line is drawn through the mid point of a side of a triangle parallel to the second side, it will bisect third side.

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Exercise 7

Posted by Nitin And Anu Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Abhishek Chaudhary 5 years, 3 months ago

Question to send Kar de Mera payre bhai

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Ch 5 maths come in exam

Posted by Shivam Kumar 5 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Jashith Sharma 5 years, 3 months ago

O yes it is deleted. Sorry my mistake. I thought that it is for science

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Jashith Sharma 5 years, 3 months ago

No, this chapter is not deleted

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Uchit Patel 5 years, 3 months ago

But why?

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Zoya . 5 years, 3 months ago

No,this chapter is deleted from syllabus.

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Simplify each of the following expressions (3+√3)(2+√2)

Posted by Priyanka Roy 5 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Uchit Patel 5 years, 3 months ago

3(2+√2) + √3(2+√2) = 6+3 √2 + 2√3 +6

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Lavishka Choudhary 5 years, 3 months ago

=3(2+√2) + √3(2+√2) =6+3√2 + 2√3+6

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Lavishka Choudhary 5 years, 3 months ago

3(2+√2) +√3(2+√2) 6+3√2 + 2√3+6

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if x=1,y=6 is a solution of equation 8x-ay+a^2=0,find the value of a

Posted by Kartik Haldwaniya 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Lavishka Choudhary 5 years, 3 months ago

Which chapter's question is this

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Write three numbers whose decimal expansion are non terminating non recurring

Posted by Ananya K 5 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Naina Gupta 5 years, 3 months ago

0.150150015000150000.......................... 0.120120012000120000..... 0.910910091000910000.....

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Radha Kothari 5 years, 3 months ago

The three numbers that have their expansions as non-terminating on recurring decimal are given below. 0.04004000400004…. 0.07007000700007…. 0.013001300013000013….

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Guriya Devi 5 years, 3 months ago

M c p

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Convert 4/3√16 into sure if simplest form

Posted by Manatpreet Kaur Manatpreet Kaur 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gauransh Natani 5 years, 3 months ago

1/3

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Factorise 4x²+y²+9z²-4xy-6yz+12zx

Posted by Shreya Shetty 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Ananya K 5 years, 3 months ago

4x²+y²+9x²-4xy+6yz-12zx =(2x)²+(-y)²+(-3z)²+2(2z)(-y)+2(-y)(-3z)+2(-3z)(2x) =(2x-y-3z)² =(2x-y-3z)(2x-y-3z)

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Factorise 4 x square + y square + 90 x square - 4 x square minus 6 y z plus 12 ZX

Posted by Shreya Shetty 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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Rationalise the denominated of 1/7+3=\<2

Posted by Dev Yadav 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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What is HRS in triangle

Posted by Küsh Sàíñî 5 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Kartikeya Srivastav 5 years, 3 months ago

It is RHS Right Hypotenuse Side

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Ananya K 5 years, 3 months ago

The answer is not HRS

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Garima Saini 5 years, 3 months ago

Right angle hypothesis side

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Garima Saini 5 years, 3 months ago

IT is not HRS .IT is RHS ,right annge hypothesis side

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2value is

Posted by Neelam Banerjee 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

ಮಮತಾ ಡಿ ಮಮತಾ ಡಿ 5 years, 3 months ago

Means

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Nifty Sharma 5 years, 3 months ago

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The number 1.10.100 1000 10001... Is

Posted by Rajesh Verma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Naina Gupta 5 years, 3 months ago

Not terminating non recurring

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Garima Saini 5 years, 3 months ago

Non recurring

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Jashith Sharma 5 years, 3 months ago

Hey mate your answer is ? Non-terminating and non-recurring

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The number

Posted by Rajesh Verma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Nifty Sharma 5 years, 3 months ago

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If the opposite sides of a quadrilateral are equal and parallel then prove that it is a parallelogram

Posted by A K 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 1 month ago

Given: A quadrilateral ABCD in which AB ║ DC and AB = DC.

To Prove: ABCD is a parallelogram

i.e., AB ║ DC and AD ║ BC.

Construction: Join A and C.

Proof : Since AB is parallel to DC and AC is transversal

∠BAC = ∠DCA [Alternate angles]

AB = DC [Given]

And AC = AC [Common side]

⇒ ∆BAC ≅ ∆DCA [By SAS]

⇒ ∠BCA = ∠DAC [By cpctc]

But these are alternate angles and whenever alternate angles are equal, the lines are parallel.

⇒ AD ║ BC

Now, AB ║ DC (given) and AD ║ BC [Proved above]

⇒ ABCD is a parallelogram

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Write four solution for the following equation 2 X + Y is equal to 7

Posted by Samruddhi Helavi 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Shaikh Kumari 5 years, 3 months ago

2x + y = 7 Put x=0 2×0 + y =7 0 +y = 7 Solution. (0, 7) Again put x=1 2×1+y =7 2 + y =7 Y= 7-2 Y=5 Solution. (1, 7) Similarly again put x= -1 2x + y= 7 2× (-1) + y =7 -2+y = 7 y=7+2 y=9 3rd solution.. (-1, 9) Finally put x=2 2x+y=7 2×2 + y=7 4 +y =7 y =7 -4 y=3 Solution.. (2, 3)

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show that x-2 is a factor of 3x^2 + 6x-24

Posted by Vishesh King 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

let x-2=0

then, x=2

put x in (i)

3(2)⁽²⁾+6(2)-24=0

12+12-24=0 {use BODMAS rule for solution}...

24-24=0

0=0

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1-1/2+2/3-3/4+4/5

Posted by Anushka Raj 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Radha Kothari 5 years, 3 months ago

0/4/0/8/5

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If x+y =8 and xy=15 then x²+y²

Posted by Vaibhav Gavande 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Yogita Ingle 5 years, 3 months ago

x + y = 8
xy = 15.

{tex}( x+y )^2 = x^2 + y^2 + 2xy{/tex}
{tex}x^2 + y^2 = ( x + y )^2 - 2xy{/tex}
{tex}= 8^2 - 2×15{/tex}
= 64 - 30
{tex}x^2 + y^2 = 34.{/tex}

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... Kumari 5 years, 3 months ago

Let x =5 and y =3 Then, x+y =5+3=8 xy=5×3=15 x^2+y^2= 5×5+3×3=25+9=34

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√(404.41)cm=

Posted by Hisham Ichoo 5 years, 3 months ago

CBSE > Class 09 > Mathematics