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Posted by Arpit Singh 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Diksha Singh 7 years, 9 months ago

Your teacher

ANSWER

proof of opposite side of cyclic quadrilateral is 180

Posted by Rajveer Verma 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Abc Abc 7 years, 9 months ago

Construction :- Draw a regular quadrilateral .. A point is made in the interior of the quad... Say p ( this point is the centre of the circle made ) We know that a point surrounds 360° around it ... _________ Now pass a line segment from one vertex to the opposite vertex passing through the point p .. Note :- the line segment is not a straight line or a diagonal.... Let the quadrilateral be named as ABCD , IN WHICH A POINT P LIES IN THE INTERIOR OF IT ... WE ALSO WNOW THAT angle at the centre is twice the pripheral angle. Thus CONSIDER ABPD AND BCDP AS QUADRILATERAL.. If angle DPA is the central angle then peripheral angle is DPA/2 Similarly angle EXTERIOR DAB MEASURES Ext.DPA/ 2 Ext. Angle DPA + angle DPA = 360° thus Angle DCB + ANGLE DAB = 1/2 ENT ANGLE DPA + 1/2 ANGLE DPA = 1/2(DPA + ENT. DPA) = 1/2 ( 360°)= 180° Thus Angle DCB+DAB= 180° Similarly ANGLE ADC + ANGLE CBA = 180° THUS WE CAN STATE THAT sum of the opposite angles of a cyclic quadrilateral is 180° ... Guys it seems lengthy but actually very easy and i am sorry as i can not state the diagram of the proof..

ANSWER

If 2x+ky=10k intersects x axis at (2,0) find k

Posted by Juhini Valand 7 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

Abc Abc 7 years, 9 months ago

2(2)+K(0)= 10K ( as the value of X= 2 and Y = 0) Now, 4+ 0= 10k and 4= 10k And hence the value of k = 4/10

Astha Gupta 7 years, 9 months ago

Putting the value of x and y..... 2(2)+k(0)=10k 4+0=10k 4=10k 10k=4 k=4/10 k=2/5

ANSWER

If each side of a equilateral triangle is tripled.Then what is the percentage of increase in the area of the triangle.

Posted by Aditya Mohanty 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Ankita ?? Arpita☺️ 7 years, 9 months ago

Yes

ANSWER

There are 3 red balls and 7 black Balls in a sack . One ball is taken out of the sack . Find the probability of getting red balls and black balls .

Posted by Shreya Mahajan 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Vishnu Pandit 7 years, 9 months ago

Red - 3/10 & black - 7/10

ANSWER

Prove that 2 distinct lines cannot have more than one point in common

Posted by Aditya Mohanty 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If two parallel lines are intersected by a transversal, then bisectors of any two corresponding angles are parallel.

Posted by Kushwaha Aryan 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Saurav Singhania 7 years, 9 months ago

Yaa

ANSWER

Find the surface area of sphere of radius: 10.5

Posted by Anuj Gupta 7 years, 9 months ago

CBSE > Class 09 > Mathematics

10 answers

Prashant Chaudhary 7 years, 9 months ago

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Khushi Singh 7 years, 9 months ago

Again hii

Prashant Chaudhary 7 years, 9 months ago

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Prashant Chaudhary 7 years, 9 months ago

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Prashant Chaudhary 7 years, 9 months ago

Hii khushi

Khushi Singh 7 years, 9 months ago

Hii prashant

Prashant Chaudhary 7 years, 9 months ago

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Diksha Singh 7 years, 9 months ago

1386

Anuj Gupta 7 years, 9 months ago

1386 unit sq.

Prashant Chaudhary 7 years, 9 months ago

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ANSWER

What is cyclic quadilateral

Posted by Nikunj Gupta 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Anuj Gupta 7 years, 9 months ago

4 points on the circumference of circle are join is called a cyclic quadrilateral

ANSWER

If a=2+√3,find the value of 3(acube+1/acube)+ (asquare+1/asquare)+(a+1/a)

Posted by Khushi Kumari 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is the volume of a hollow cylinder??

Posted by Mannu Chhabra 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Nikunj Gupta 7 years, 9 months ago

Pie(R^2 - r^2)

ANSWER

Find mean of 2,3,4,5,6

Posted by Saurabh Singh 7 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

Ss S 7 years, 9 months ago

4

Lovish Singla 7 years, 9 months ago

2 +3+4+ 5 +6 ÷5 20÷5 4

ANSWER

If is given that 3a+2b=5c then find the value of 27a^3+8b^3-125c^3 if abc =0

Posted by Vandhiya Devan 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Hello...

Posted by Vishal Kaushik 7 years, 9 months ago

CBSE > Class 09 > Mathematics

9 answers

Khushi Singh 7 years, 9 months ago

Pta mhi

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Vishal Kaushik 7 years, 9 months ago

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Khushi Singh 7 years, 9 months ago

Hlo

ANSWER

Observation is 50 and mean is 80.4 then 96 misread as69 what's correct mean?

Posted by Gautam Mishra 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

X=3-2√2. Find x^3 - 1/x^3

Posted by Bala Sneha 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Find the value of a and b, 3√2+2√3÷3√2-2√3-3√2-2√3÷3√2+2√3=a+b√6

Posted by Anushka Singh 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Formula of perimeter of parallelogram

Posted by Rajesh Bansal 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Deeksha Kalyan 7 years, 9 months ago

Sum of all sides or 2(a+b) where a and b are sides of parallelogram

ANSWER

5a +2ab+4ba-8a+5 divided by 3x+2

Posted by Khushi Gupta 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Ankita ?? Arpita☺️ 7 years, 9 months ago

Wrong question

ANSWER

Find the value of adjacent figure. 2x, 3x,5x. Find the value of x.

Posted by Aditya Magon 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Ankita ?? Arpita☺️ 7 years, 9 months ago

Where figure

ANSWER

The line segment joining the mid points of two sides of a triangle is parallel to third side and half of it.

Posted by G.Mani Kanta 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

K is a zero polynomial p(x)= x^2-11x+24 . If K is a prime no. . Find the value of K

Posted by Xyz Uio 7 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Astha Gupta 7 years, 9 months ago

Where is K in the equation???

ANSWER

angle in the same segment are equal

Posted by Akshay Soni 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

x³-6x²+11x-6

Posted by Roshan Kumar 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

(4x ×9y)(8x ×6y)

Posted by Mobin Raza 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

All theorem solution of chapter 10 circles

Posted by Shristi Sharma 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Ex. 13.6

Posted by Ayan Ishtiyaque 7 years, 9 months ago

CBSE > Class 09 > Mathematics

6 answers

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Raagini Pandey 7 years, 9 months ago

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ANSWER

Side of a triangle are in the ratio 12:17:25 and it's perimeter is 540cm find its area

Posted by Gurkaran Singh 7 years, 9 months ago

CBSE > Class 09 > Mathematics

5 answers

Ashish Boora 7 years, 9 months ago

First add 12x+17x+25x, then divide by 540 You will get x =10 Sides of the triangle will be 120,170 and 250 Now using Heron's Formula the answer will be 9,000 cm square

Tanu Sahu 7 years, 9 months ago

First try to add this 12:17:25 then yr ans ll 54x then divide 54/540 u get

Tanu Sahu 7 years, 9 months ago

First try to add this 12:17:25 then yr ans ll 54x then divide 54/540 u g

Tanu Sahu 7 years, 9 months ago

First try to

Tanu Sahu 7 years, 9 months ago

First try t

ANSWER

Why are isosceles triangle have 2side equal

Posted by Mohit Kumar 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

The perimeter of an isosces triangle is 42cm and its base is 1½ times each of equal sides. Find the area of the triangle

Posted by Yashi Sharma 7 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

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