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 5 years, 3 months 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 5 years, 3 months ago

Tgagzgsaxfha

2Thank You

ANSWER

What is the volume of frustum?

Posted by Mohd Javvad?? 5 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Mohd Javvad?? 5 years, 3 months ago

Thanxxxx guys??

0Thank You

Acbu Roy 5 years, 3 months ago

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

1Thank You

Yogita Ingle 5 years, 3 months 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 5 years, 3 months ago

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

2Thank You

Rooh Choudhary 5 years, 3 months ago

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

1Thank You

ANSWER

P(x) = x power 3

Posted by Samaira Naaz 5 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Sourav Raj Bharti 5 years, 3 months ago

0Thank You

Naveen Mk 5 years, 3 months 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?? 5 years, 3 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Dr.Riya Bhanushali 5 years, 3 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Agastya Chitransh Shrivastava 5 years, 3 months ago

Same radius

0Thank You

Kaku Kaku 5 years, 3 months ago

Same radius

2Thank You

Sarita Panda 5 years, 3 months ago

Same radius

3Thank You

Divya Singh 5 years, 3 months ago

Same length

1Thank You

Aayush Raj 5 years, 3 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Rishita Rath 5 years, 3 months ago

Thank u very much

0Thank You

Rupesh Nehra 5 years, 3 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Rupesh Nehra 5 years, 3 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 1 month 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Student 10Th 5 years, 2 months 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 5 years ago

CBSE > Class 09 > Mathematics

1 answers

Aashna Jaiswal 5 years, 2 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Shubh Sarin 5 years, 2 months ago

Ok thanku

1Thank You

ANSWER

Rationalize 7/3✓3 -2✓2

Posted by Jd Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Acbu Roy 5 years, 3 months ago

Pls put correct question ?

0Thank You

Acbu Roy 5 years, 3 months ago

Your question is wrong

0Thank You

ANSWER

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

Posted by Acbu Roy 5 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Divya Singh 5 years, 3 months ago

Infinitely many solution

1Thank You

Jiya .... 5 years, 3 months ago

Infinite solutions

1Thank You

Aanchal Jha 5 years, 3 months ago

Infinite solutions

1Thank You

Dr.Riya Bhanushali 5 years, 3 months ago

Infinitely many solutions

1Thank You

Nandini Simalty 5 years, 3 months ago

Infinite solutions

1Thank You

ANSWER

How to prove a quadrilateral a rhombus

Posted by Ayaz Parvez 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Utkarsh Kumar Shaw 5 years, 3 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Aditya Kumawat 5 years, 3 months ago

24/30

0Thank You

ANSWER

What is value of √2 +√3

Posted by Arnav Kaushik 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Vikash Rai 5 years, 3 months 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 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Hlw i have a doubt

Posted by Hardavi Mangar 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Jiya .... 5 years, 3 months ago

Ya akk

0Thank You

Affan Alam 5 years, 3 months ago

Kys

0Thank You

ANSWER

What is terminating expansion

Posted by Rooh Choudhary 5 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Harsh Parewa 5 years, 3 months ago

1Thank You

Jiya .... 5 years, 3 months ago

Termanting is that in which expansion remainder become zero

1Thank You

Rooh Choudhary 5 years, 3 months ago

Hanji

4Thank You

Ayush Dubey 5 years, 3 months ago

Hallo

3Thank You

ANSWER

find the remainder obtained by dividing p(x)= x^2 + x - 5 by x-2 . also find remainder without actual division

Posted by Foram Lakhani 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Rupesh Nehra 5 years, 3 months ago

The answer is 1

1Thank You

Arnav Kaushik 5 years, 3 months ago

The answer is *1*

1Thank You

ANSWER

simplify : (x ^a+b)^a-b . (x^b+c)^b-c /(x^a+c)^a-c

Posted by Foram Lakhani 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Arnav Kaushik 5 years, 3 months ago

The answer is 0

1Thank You

ANSWER

Look at several example of rational number in the form of p/q. Where p and q are integer with no common factors other than 1 and having terminating decimal expansion. Can you guess what property q must satisfy.

Posted by Rooh Choudhary 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Anushka Agarwal 5 years, 3 months ago

Ans: q≠0

2Thank You

Sarita Panda 5 years, 3 months ago

It should be in the form of 2^n and 5^n

1Thank You

ANSWER

Handi

Posted by Ashok Jakhmola 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Number 1to 10 are written on ten separate slips (one number on one slip) kept in a box and mixed well one slip is chosen from the Box without looking into it. (a) what is tha probability of getting a number 6 ? (b) what is the probability of getting a number greater than 6 ?

Posted by Seema Sing 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Rupesh Nehra 5 years, 3 months ago

Answer of 6 (a) part is 1/10 answer of 6 (b) part is 4/10 or2/5

0Thank You

ANSWER

The capacity of a closed cylindrical vessel of height 1m is 15.4 litres.How many square meters if metal sheet would be needed to make it?

Posted by Yuktha .N 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Vinayak Singh 5 years, 3 months ago

height of the cylinder =1m capacity of the cylinder=volume of the cylinder=15.4 litres =15400 cubic cm =0.0154 m sq. so,r2h=0.0154 m sq. 22/7*r2*1=0.0154 r2=0.0154*7/22 r2=0.0049 r=0.07 so the total surface area =2rh+2r2 =2r(r+h) =2*22/7*0.07(0.07+1) =0.44*1.07 =0.4708 m sq.

2Thank You

Vinayak Singh 5 years, 3 months ago

What would you like to ask? 9th Maths Surface Areas and Volumes Surface Area of Right Circular Cylinders and Cones The capacity of a closed cy... MATHS The capacity of a closed cylindrical vessel of height 1 m is 15.4 litres. How many square meters of metal sheet would be needed to make it? MEDIUM Share Study later ANSWER Height of the vessel=1m Capacity of the vessel=15.4 liters =100015.4m3=0.0154m3 Volume of the cylindrical vessel=πr2h=0.0154 ⇒722×r2×1=0.0154 r2=220.0154×7=0.0049 ⇒r=0.07m Metal sheet needed to make the cylindrical vessel=T.S.A of the cylindrical vessel. ⇒2πr(r+h)=2×722×0.07(0.07+1)m2 =0.4708m2 ∴0.4708m2 of sheet will be required to make the vessel.

2Thank You

ANSWER

Multiply ( 6 root 5 ) × (7 root 5 ) × (3 root 5) ?

Posted by Mahek ?? Patel 5 years, 3 months ago

CBSE > Class 09 > Mathematics