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

Let one angle=x Let second angle=2/3of x =2/3x 1st angle+2nd angle=180° x+2/3x=180° 5/3x=180° x=180°×3/5 x=36×3 x=108° so one angle=x=108° second angle=2/3x=2/3×108°=72°

2Thank You

Yogita Ingle 4 years, 1 month ago

Let one angle=x
Let second angle=2/3of x =2/3x
1st angle+2nd angle=180°
x+2/3x=180°
5/3x=180°
x=180°×3/5
x=36×3
x=108°
so one angle=x=108°
second angle=2/3x=2/3×108°=72°

3Thank You

Krish Chouhan 4 years, 1 month ago

Tgagzgsaxfha

2Thank You

ANSWER

What is the volume of frustum?

Posted by Mohd Javvad?? 4 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Mohd Javvad?? 4 years, 1 month ago

Thanxxxx guys??

0Thank You

Acbu Roy 4 years, 1 month ago

V = (1/3) * π * h * (r12 + r22 + (r1 * r2)).

1Thank You

Yogita Ingle 4 years, 1 month ago

Frustum of cone is the part of cone when it is cut by a plane into two parts. The upper part of cone remains same in shape but the bottom part makes a frustum.
The conical frustum formula of cone in terms of radius ‘r’ and height ‘h’ is given by;
Slant height = √((r – r’)² + h²)
Volume = (1/3) x π x h x (r² + r’² + (r x r’))

1Thank You

Laya R 4 years, 1 month ago

Volume of a conical frustum =V=(1/3)*pi*h*(r12+r22+(r1*r2))

2Thank You

Rooh Choudhary 4 years, 1 month ago

(1/3)*pi*h*(r12+r22 +(r1*r2)

1Thank You

ANSWER

P(x) = x power 3

Posted by Samaira Naaz 4 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Sourav Raj Bharti 4 years, 1 month ago

0Thank You

Naveen Mk 4 years, 1 month ago

P(2) =2³ , p(2) =8, 8 is the answer you can take any number for x=1, 2,3,4 5 6 7 8,9,37............

0Thank You

Mohd Javvad?? 4 years, 1 month ago

What is question ? It not understood ...

1Thank You

ANSWER

Revised syllabus of all subjects Pls answer this Coz I'm getting confused ? from Google ?

Posted by Ekta Kumari 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Dr.Riya Bhanushali 4 years, 1 month ago

It's given in this app please refer with this app

0Thank You

ANSWER

Two circles are said to be congruent if they have * Same length Same radius Same angle None of these

Posted by Bunty Kumar 4 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Agastya Chitransh Shrivastava 4 years, 1 month ago

Same radius

0Thank You

Kaku Kaku 4 years, 1 month ago

Same radius

2Thank You

Sarita Panda 4 years, 1 month ago

Same radius

3Thank You

Divya Singh 4 years, 1 month ago

Same length

1Thank You

Aayush Raj 4 years, 1 month ago

Same radius

1Thank You

ANSWER

If log x to the base 10=a,then 10^a-1 in terms of x is ?

Posted by Rishita Rath 4 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Rishita Rath 4 years, 1 month ago

Thank u very much

0Thank You

Rupesh Nehra 4 years, 1 month ago

The answer is 2

1Thank You

ANSWER

r1 and r2 are the remainder in polynomial x square x cube + 2 x square - 5 x + 7 and x cube + x square - 2 x + 6 are divided by x + 1 and x minus 2 respectively if r1 minus 2 is equal to 18 find the value of a

Posted by Tarun Sharma 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Rupesh Nehra 4 years, 1 month ago

A=5/4

0Thank You

ANSWER

the marks obtained by students in unit test of mathematics are given below.Represent the data by histogram Marks 0-10,10-30,30-45,45-50. Number of students 8,32,18,10

Posted by Almi Aami 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 3 years, 11 months ago

Given : marks obtained by students in unit test of mathematics are given

To Find : .Represent the data by histogram

Solution:

Marks Number of students

0-10, 8

10-30, 32

30-45, 18

45-50. 10

Histogram: a graphical display of data using bars of different heights. It is similar to a Bar Chart, but a histogram groups numbers into ranges

0Thank You

ANSWER

Show that a median of a triangle divides it whose triangles of equal area

Posted by Pralaya Beniwal 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Student 10Th 4 years, 1 month ago

Let ABC be a triangle and Let AD be one of its medians. In △ABD and △ADC the vertex is common and these bases BD and DC are equal. Draw AE⊥BC. Now area(△ABD)= 2 1 ×base×altitude of△ADB = 2 1 ×BD×AE = 2 1 ×DC×AE(∵BD=DC) but DC and AE is the base and altitude of △ACD = 2 1 × base DC × altitude of △ACD =area△ACD ⇒area(△ABD)=area(△ACD) Hence the median of a triangle divides it into two triangles of equal areas. solution.

0Thank You

ANSWER

Simplyify 7√3/√10 +√3 -2√5 /√6 + √5

Posted by Jd Sharma 3 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Aashna Jaiswal 4 years, 1 month ago

11+16√15/2√15

0Thank You

ANSWER

The mean of 15 observations is 42 out of these observations if the mean of first 8 observations is 40 and that of last 8 observations is 44 find the 8th. observation?

Posted by Shubh Sarin 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Shubh Sarin 4 years ago

Ok thanku

1Thank You

ANSWER

Rationalize 7/3✓3 -2✓2

Posted by Jd Sharma 4 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Acbu Roy 4 years, 1 month ago

Pls put correct question ?

0Thank You

Acbu Roy 4 years, 1 month ago

Your question is wrong

0Thank You

ANSWER

A linear equation in 2 variables has ___________________ please tell me the answer.... ???....

Posted by Acbu Roy 4 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Divya Singh 4 years, 1 month ago

Infinitely many solution

1Thank You

Jiya .... 4 years, 1 month ago

Infinite solutions

1Thank You

Aanchal Jha 4 years, 1 month ago

Infinite solutions

1Thank You

Dr.Riya Bhanushali 4 years, 1 month ago

Infinitely many solutions

1Thank You

Nandini Simalty 4 years, 1 month ago

Infinite solutions

1Thank You

ANSWER

How to prove a quadrilateral a rhombus

Posted by Ayaz Parvez 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Utkarsh Kumar Shaw 4 years, 1 month ago

When proving a quadrilateral is a rhombus, we must know several things: 1) A rhombus is a parallelogram with equal side lengths. 2) A rhombus has diagonals that are perpendicular to one another and bisect one another. 3) A rhombus' diagonals bisect the angles of the vertices each diagonal intersects. Prove that when in a rectangle, the midpoints of the sides of the rectangle are drawn and labeled A,B,C, and D, then the quadrilateral ABCD is a rhombus. Say that the rectangle had side lengths of length e and f. Then the side lengths of quadrilateral ABCD, by the Pythagorean Theorem, are √(e2)2+(f2)2. Since all sides of this quadrilateral are equal then quadrilateral ABCD must be a rhombus.

2Thank You

ANSWER

In a cricket match, a batswoman hits a boundary 6 time out of 30 balls she plays. Find the probability that she did not hit a boundary.

Posted by Vikash Rai 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Aditya Kumawat 4 years, 1 month ago

24/30

0Thank You

ANSWER

What is value of √2 +√3

Posted by Arnav Kaushik 4 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Vikash Rai 4 years, 1 month ago

The square root of 3 is denoted by √3. The square root basically, gives a value which, when multiplied by itself gives the original number. Hence, it is the root of the original number.

2Thank You

ANSWER

170

Posted by Mohammad Ssmeer 4 years, 1 month ago

CBSE > Class 09 > Mathematics