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

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Let triangle ABC, right angle at B and D is the mid points of AC show that DA = DB = DC

Posted by Mehak Choudhary 4 years, 11 months ago

CBSE > Class 09 > Mathematics

4 answers

Chandan Kumar 4 years, 11 months ago

AD=CD are equal because point D is mid point of AC .

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Mehak Choudhary 4 years, 11 months ago

Thx

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Anushka Mallick 4 years, 11 months ago

Nice

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Vineet Jakhar 4 years, 11 months ago

(DA=DB=DC) le dekh le

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concept map of math chapters

Posted by Rankaj Sharma 4 years, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Prisha Gupta 4 years, 11 months ago

Which chapter ?

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Lokesh Sharma 4 years, 11 months ago

Go to link you get your answer

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Lokesh Sharma 4 years, 11 months ago

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Find the perimeter of the following shape (a) Triangle of side 9 meter

Posted by Full Time Intro Gamer 4 years, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Chandan Kumar 4 years, 11 months ago

If this is an equilateral triangle then, Perimeter=(9+9+9)m =27m

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Priya Bungla 4 years, 11 months ago

1=The sides of a triangle are 3cm,4cm,5cm. Perimeter of the triangle = 3+4+5=12 cm 2= The side of the equilateral triangle is 9cm. So the perimeter of a equilateral triangle is 9cm+9cm+9cm =27cm . 2= The equal sides of a isosceles triangle are 8cm And the other side is of 6cm So the perimeter = 8cm+8cm+6cm = 22 cm .

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Gaurav Seth 4 years, 11 months ago

Q : Find the perimeter of each of the following shapes: (a) A triangle of sides 3 cm, 4 cm and 5 cm. (b) An equilateral triangle of side 9 cm. (c) An isosceles triangle with equal sides 8 cm each and third side 6 cm.

A}
perimeter=3+4+5=12 cm
b}
perimeter=9×3=27 cm
c}
perimeter÷8+8+6=22 cm

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Formula of median. STATISTICS Please any one tell.

Posted by G.Amrutha Varshini 19 4 years, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Priya Bungla 4 years, 11 months ago

If the term is odd so the formula =n+2/2 If the term is even so the fornula = n/2+ n+1/2

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Ravi Kumar 4 years, 11 months ago

If the items are arranged in increasing or decreasin order of magnitude, the middle value is called median.

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Ashutosh Kumar Tiwari 4 years, 11 months ago

arrange all the given numbers in asending order then count them if they are odd in total then divide it by 2 i.e. n+1/2 where n is the no of numbers if they are even then divide it by two i.e. n/2

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What is the degree of root2 ?

Posted by Siri.Korti Korti 4 years, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Priya Bungla 4 years, 11 months ago

The dregree of root 2 is zero

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Lokesh Sharma 4 years, 11 months ago

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Sahab Ram 4 years, 11 months ago

The degree of root2 is zero

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I want offline lab manual of class 9 of evergreen

Posted by Satanand Patel 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Mahiya Mehrotra 4 years, 11 months ago

Not available offline u can buy it ...

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329 divide 400 decimal expansion

Posted by Two In One 4 years, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Hitkar Miglani 4 years, 11 months ago

329/400=0.8225

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Shiyamal Neog 4 years, 11 months ago

Fkdkdd

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Vadde Surekha 4 years, 11 months ago

0.8225 ans

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In the figure the area of a parallelogram ABCD is 40 cm if PQ os a median of triangleCDP then find the area of triangle PDQ

Posted by Niyati Joshi 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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Find the volume of the the largest circular cone that can be cut of a cube whose edge is 9 centimetre

Posted by Mahendra Sharma 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Gunmeet Pahwa 4 years, 11 months ago

It has been given that the cube ' S edge is 9cm so we can conclude that the height of cube will be also 9cm. Now We know that the cube touches it's base as well as edge. So from here we can say that it's diameter is 9cm then ultimately it's radius will be 4.5cm. Now apply the volume of cube to get answer i. e. 1/3πr^h. So 1/3 into 22/7 into (4.5)^2 into 9 = 190.33cm^3

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Ad is a diameter of a circle and AB is a chord of ad =34cm AB =30cm the distance of an form a centra of circle is .83

Posted by Poonam Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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Chapter 13.4

Posted by Vijay Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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Akash has rs 25 take 55 and give 99 how much persnt he get

Posted by Yashashvi Ingle 4 years, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Nazim Saify 4 years, 11 months ago

dfghj,

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Prathamesh Jadhav 4 years, 11 months ago

-31

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√27+√16-√3-√4

Posted by Khushi Umariya 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

#Joel Wilson 4 years, 11 months ago

=√27+√16-√3-√4 =3√3+4-√3-2 =3√3-√3+4-2 =2√3+2

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How to take out class size

Posted by Sneha Dua 4 years, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Mamun??? Papa'S Dear 4 years, 11 months ago

By measuring

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G.Amrutha Varshini 19 4 years, 11 months ago

The highest frequency minus lowest frequency. i.e 120- 140=20 class size.

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ABC is an isosceles triangle in which AB equal AC AD bisect exterior angle PAC and CD parallel AD Show that (1) angle dac equal angle bca (2) Abcd is a parallelogram .

Posted by Harshit Saxena 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 4 years, 11 months ago

Given: ABC is an isosceles triangle in which AB = AC. AD bisects ∠PAC and CD || AB.
To Prove:
(i) ∠DAC = ∠BCA
(ii) ABCD is a parallelogram.
Proof:
(i) In ∆ABC,
∵ AB = AC
∴ ∠B = ∠C ...(1)
| Angles opposite to equal sides of a triangle are equal
Also, Ext. ∠PAC = ∠B + ∠C
| An exterior angle of a triangle is equal to the sum of two interior opposite angles
⇒ ∠PAC = ∠C + ∠C | From (1)
⇒ 2 ∠CAD = 2 ∠C | ∵ AD bisects ∠PAC
⇒ ∠CAD = ∠C
⇒ ∠DAC = ∠BCA
(ii) But these angles form a pair of equal alternate interior angles
∴ AD || BC
Also, CD || AB
∴ ABCD is a parallelogram
| A quadrilateral is a parallelogram if its both the pairs of opposite sides are parallel.

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What is formula of an iscoscels triangle

Posted by Umesh Suthar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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Whatvin vertical in Graph called?

Posted by Amit Kumar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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Prove that the perpendicular bisected of a side cyclic

Posted by Shreya Singh Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Mukhvir Singh 4 years, 11 months ago

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In a circle CD perpendicular AB such that AB=12cm and CE=3cm Find radius of the circle

Posted by Ved Prakash Yadav 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 4 years, 11 months ago

Q: The diameter CD of a circle with Centre O is perpendicular to chord AB if AB is equal to 12 cm and CE=3cm, calculate the radius of the circle

E X P L A N A T I O N :

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On the head and the if log 2 x minus 1 base X + 1 + log x + 1 base 2 x minus 1 is equal to 2 find x

Posted by Kavya Rathour 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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can you proof it 8

Posted by Mohd Maaz 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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how to do ncert textbook maths ex 12.2 question 2 ?????

Posted by Stella Antony 4 years, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Mehak Choudhary 4 years, 11 months ago

Triangle ABC ac sq = ab sq +=bc sq (5) sq = 3 sq + 4sq Therefore, triangle ABC is a right angled triangle right angle at point B . AREA of triangle ABC = HALF AB = BC ( half × 3× 4) =6cmsq For triangle ADC perimeter=2s =AC+CD+DA=(5+4+5) CM 14cm S =7cm By herons formula area of triangle =√ s(s - a ) ( s - b ) ( s - c ) Area of triangle ADC =√ 7 ( 7-5) (7-5) (7-4) cm sq = √ 7 (2)(2)(3) cm sq =2 √ 21 cm sq = ( 2× 4. 583 ) cmsq =9.166cm sq Area of ABCD = area of triangle ABC + area of triangle ACD

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Aryan Kothari 4 years, 11 months ago

Ar(abc) = 1÷2 bh (because irs a pythagoreas triplet so, ar(abc)= 6cm*2 Ar(adc) (by herons formula) S= (5+5+4)÷2=7 Area = √84 Area=2√21 cm*2 Area abcd = 6cm*2 +2√21 cm2

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Vinayak Killedar 4 years, 11 months ago

I dont know

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