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

(i) Line segment joining the centre to any point on the circle is a radius of the circle.Answer: True; because the distance between centre and any point on circumference is called radius. (ii) A circle has only finite number of equal chords. Answer: False, because a circle can haev infinite number of equal chords. (iii) If a circle is divided into three equal arcs, each is a major arc. Answer: False, because a major arc is always bigger than a minor arc, and they cannot be equal. (iv) A chord of a circle, which is twice as long as its radius, is a diameter of the circle. Answer: True because diameter is the longest chord of a circle and is always twice the radius. (v) Sector is the region between the chord and its corresponding arc. Answer: False, the region between the chord and its corresponding arc is called segment. (vi) A circle is a plane figure. Answer: True

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represent 3+√2.6 on number line

Posted by Aanya Mahi 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Nitya Gupta 5 years, 1 month ago

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Suzanne Smitha 5 years, 1 month ago

We are required to the expression 3 + root 2.6 on the number line. Since, we know, 3+ √2.6 = 3 + √2.6 3+ 1.61 4.61 So, it is required to represent the number 4.61 on the number line. As we know, The number 4.61 lies between the numbers 4.6 and 4.7.

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Define mathematics

Posted by Rajnish Singh 5 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Ravinder Butola 5 years, 1 month ago

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Abir Mishra 5 years, 1 month ago

the science or study of numbers, quantities or shapes

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Suzanne Smitha 5 years, 1 month ago

Mathematics is the science that deals with the logic of shape, quantity and arrangement. Math is all around us, in everything we do. It is the building block for everything in our daily lives, including mobile devices, architecture (ancient and modern), art, money, engineering, and even sports.

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What is the probability of getting non face cards or 2 in the deck of cards?

Posted by Ritika Gupta 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Aayushi Pandey 5 years, 1 month ago

1/52

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If the sum of the bases of trapezium is 12 cm and area is 14.1 cm² then its altitude will be

Posted by Ashish Singh Singh 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Ravinder Butola 5 years, 1 month ago

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Suzanne Smitha 5 years, 1 month ago

Let the altitude of the trapezium be h, Then, The sum of the sides of the trapezium=12 cm Now,The area of the trapezium =14.1 cm² sum of parallel side /2"height=14.1 cm² 12/2"h=14.1 cm² h=14.1cm²/6 h=2.35 cm So,the altitude is 2.35 cm

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?when 40 time tossed the coin and 24 being tail what possibilitiey to get result both head and tail?

Posted by Yogita Mina 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Mehak Kumari 5 years, 1 month ago

Coin tossed= 40 times, Showed tail= 24 times Probability of (getting tail)=40-24 =16/40 =2/5 Probability of (getting head)= 24/40 =12/20 =3/5

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Ritika Gupta 5 years, 1 month ago

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Suzanne Smitha 5 years, 1 month ago

Hence,the possibilitiey to get result both head and tail is =2/5 +3/5 =5/5 =1

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Suzanne Smitha 5 years, 1 month ago

Hence,possibility to get result both head and tail is=2/5 +3/5 =5/5 =1

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Suzanne Smitha 5 years, 1 month ago

Coin tossed = 40 times showed tail = 24 times Probability (getting head) =40-24/40 =16/40 =2/5 Probability (getting tail)=24/40 =12/20 =3/5

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Is √98/√2 a rational number?

Posted by Saanvi Saanvi 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Adarsh Patil 5 years ago

Yes it is an rational number by multiplying root 2 by root 2 we get the answer 7

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Yogita Mina 5 years, 1 month ago

Yes it is a rational number

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6÷2(2+1)

Posted by Kripa Daga 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Yogita Mina 5 years, 1 month ago

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Anuj Pandey 5 years, 1 month ago

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Tamanna Sarfraz 5 years, 1 month ago

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Siddhi Sarolkar 5 years, 1 month ago

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Amreen Khilji 5 years, 1 month ago

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Case study based questions

Posted by Shivakant Yadav 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Suzanne Smitha 5 years, 1 month ago

https://youtube.com/playlist?list=PL2uPMjJCHErQtH4GQiaA-y70Am6tkCFTd Please click on this link and learn the case based Questions in YouTube online . Don't worry for the answers which they've given as to scold you

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Neha Kumari 5 years, 1 month ago

Math

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Shridhar Kumbar 5 years, 1 month ago

Fool

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Shridhar Kumbar 5 years, 1 month ago

You fool you don't know answer

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Shridhar Kumbar 5 years, 1 month ago

Study study study study

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A video on quadrilateral garden and calculation by using herons formula

Posted by Khushboo Chaudhary 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Chirag Panghal 5 years, 1 month ago

A+b+c _ 2

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What is a right angle triangle

Posted by Karan Bag 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Saanvi Saanvi 5 years, 1 month ago

Right angled triangle which have 90 degree angle

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Kripa Daga 5 years, 1 month ago

A triangle having one angle equal to 90° is right angle triangle.

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Amreen Khilji 5 years, 1 month ago

A triangle ? in which one angle is equal to 90°,is called ✔right angle triangle ?.

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Priti Kumari 5 years, 1 month ago

A triangle in which one of the angle is 90 degree and less than 180degree

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धर्मेंद्र कुशवाह 5 years, 1 month ago

A triangle in which one angle is equal to 90°, is called right angled triangle

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The adjacent angles of a parallelogram are (5x-3) and (5x-67). Find all the angles of the parallelogram

Posted by Khushboo Singh 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Deepak Sethi 5 years, 1 month ago

that all the angles of parallelogram are the sum of 360 degree and we also know that the sum of adjacent angles is 180 degree and we also know that the the the opposite angles are equal so if we add all the angles of parallelogram sin 5x - 3 + 5 x -67 both into both are multiplied by 2 then if in Lhs side 2 into 5x- 3 + 5x- 67 is equals to 360 degreeput all the angles with 360 degree so we found the angles we found that x is equal to 25 degree now 5 x minus 3 is equals to 5 into 25 - 3 that is 125 - 3 is equal to 1 22 degree and we know that opposite sides are equal so angle b and angle c is 12122 degree from a war 5 x minus 6 7 is equals to 5 into 25 - 67 that is

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Kripa Daga 5 years, 1 month ago

122°,58°,122°,58°

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In given fig o is centre of circle.om is perpendicular BC,ol perpendicular ab ,on perpendicular AC,Om=on=ok.is triangle ABC equilateral triangle.give reason.chapter circle grade 9

Posted by Shreeji Vakil 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Tanishq Pandya 5 years, 1 month ago

Given :- O is the centre of a circle. OM is perpendicular to BC. So, OM bisects BC (the perpendicular from the centre of a circle to a chord bisects the chord) ON is perpendicular to AC. So, ON bisects AC (same reason as above) OL is perpendicular to AB. So, OL bisects AB (same reason as above) Also, OL=OM=ON ... (i) To prove :- ∆ABC is an equilateral triangle. Proof :- From equation (i), AB=BC=CA (Chords equidistant from the centre of a circle are equal) Therefore, ∆ABC is an equilateral triangle. _________________________ Hope it helps you!

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Prashant shoe shops placing an order for making cardboard boxes for packing issues to sizes of boxes were acquired the bigger of dimensions 22m 215 cm into 5 cm and the smaller of dimensions 15 cm and 10cm and to 5 cm for all the overlap two percent of the total surface area is required extra if the course of the cardboard is 5 piece for thousand CM square find the cost of cardboard required for supplying 200 box of each kind

Posted by Kiratpreet Kaur 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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A triangle can not have more than....... Right angle

Posted by Badal Chandravanshi 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Rajnish Singh 5 years ago

1right angle

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Amreen Khilji 5 years, 1 month ago

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Kripa Daga 5 years, 1 month ago

One

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Aditya Singh 5 years, 1 month ago

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Badal Chandravanshi 5 years, 1 month ago

One

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Express 8.025 in the form of P/Q

Posted by K.Mohana Devi 5 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Adarsh Patil 5 years ago

8025/1000

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Priyal Gupta 5 years, 1 month ago

It can be written as 8025/1000

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Kripa Daga 5 years, 1 month ago

8025/1000 321/100

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The area of triangle 150 cm square side are in ratio 345 what perimeter

Posted by Tejpratap Singh 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Mina 5 years, 1 month ago

1 is the perimeter

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I want help in maths at 4th chapter Linear equation in two variables

Posted by Akash Haldar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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What is a ray

Posted by Pratik Atkal 5 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Vanshika Jain 5 years ago

A ray is a part of line that has one end point and goes on forever in one direction

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Aditi Kumari 5 years, 1 month ago

A ray is a part of line that has one end point and goes on forever in one direction

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Kripa Daga 5 years, 1 month ago

A line having only one end point

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Finde time when principal is rs 45000 ,ci is rs 1000 and rate is 10% per annum

Posted by Prince Raj 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Evaluate 96×104

Posted by Bharani M 5 years, 1 month ago

CBSE > Class 09 > Mathematics

2 answers

Kripa Daga 5 years, 1 month ago

(100-4)(100+4) 100²-4² 10000-16 9984

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Nisha Kumari 5 years, 1 month ago

(100-4)(100+4)=100×100-4×4=10000-16=9984

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show that 1upon (3-√8) -1upon (√8-√7)+1upon(√7-√6)-1upon(√6-√5)+1upon(√7-6)=5

Posted by Suraj Pratap 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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show that if the diagonals of a quadrilateral are equal and bisect each other at right angles then it is a square

Posted by Vipin Siwach 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is exact value of 22/7

Posted by Gurvinder Singh 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Nitya Gupta 5 years ago

3.14

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Saanvi Saanvi 5 years, 1 month ago

3.142857142857 is the exact value of 22\7

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Amreen Khilji 5 years, 1 month ago

3.14

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Priyal Gupta 5 years, 1 month ago

3.142857142857142 is the exact value of 22/7 but 3.142857142857142 is not the exact value of π . We only estimate 22/7 as π. The value of pie is non terminating non repeating which means it never ends. Value of π 3.141592653589793.......... And so on about more that million or billion numerals.

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Ajay Kumar 5 years, 1 month ago

Are exact values are found

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Express 8.0025 in the form

Posted by Inder Pratap 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Vidhi Agarwal 5 years, 1 month ago

Are u askig to express it in fractional form? Then here is ur ans.. 80025/10000 U just have to exclude the decimal and in denominator have to write zeros according to how many digits are thr aftr decimal.. Then convert it into its simplest form.. 3201/400

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3)An iron sphere of radius 14 cm is melted The number of spheres each of diameter 7 cm can be made out of it will be in number

Posted by Radha Khandelwal 5 years, 1 month ago

CBSE > Class 09 > Mathematics