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

Ask questions which are clear, concise and easy to understand.

Ask Question

Probability of getting a black jack

Posted by Zunaid Ahmed 8 years, 2 months ago

2 answers

Sakshi Sharma 8 years, 2 months ago

There are total 52 cards . So total number of outcomes are 52. There are only 2 black jacks in cards, So favourable outcomes are 2. Now, Probability= Total number of outcomes/total number of favourable outcomes So, 2/52 in lowest form of fraction we can also write 1/26. I hope that it helps.

0Thank You

Suhani Agrawal 8 years, 2 months ago

2/52

1Thank You

ANSWER

Sample paper

Posted by Abhishek Chaubey 8 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Debojit Lahiri 8 years, 2 months ago

Search in google

0Thank You

Shreya Gunsola 8 years, 2 months ago

Kiska

2Thank You

ANSWER

Posted by Pooja Kaim 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

In the below figure ,∆ABC =69°.∆ACB =31° find ∆BDC .

Posted by Dhiraj Yadav 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Vishal Kaushik 8 years, 2 months ago

2Thank You

ANSWER

Hello anyone is online

Posted by Ayushi Sharma 8 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Durga Verma 8 years, 2 months ago

Yas I am

0Thank You

Vishal Kaushik 8 years, 2 months ago

ya i am

2Thank You

ANSWER

point P is on x axis and is at a distance of 4 units from y axis to its left. write the coordinates of the point P.

Posted by Tanishq Goyal 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Bhavesh Meghwal 8 years, 2 months ago

(-4,0)

0Thank You

ANSWER

construct a triangle whose perimeter is 10and base angle 45and60

Posted by Dhruv Dhruv 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Dhruvrajsinh Vala 8 years, 2 months ago

First draw a line of 10cm then make a angle of 45 on one edge and of 60 on other edge ,then draw angle bisectors of both angles and let them intersect at point O ,next draw side bisectors of the both angle bisectors drawn before.let side bisectors intersect the line we draw at beginning at P and Q respectively and join the 3 points O,P and Q and here is the required triangle POQ. I HOPE IT HELPS???.

2Thank You

ANSWER

If 49a²-b=(7a+½)(7a-½). Find b

Posted by Rahul Sangwan 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Sakshi Sharma 8 years, 2 months ago

b=1/4

0Thank You

ANSWER

Radha mad a picture of a aeroplan with coloured paper as shown in fig 12.15. find the total area of the paper used

Posted by Neeraj Kumar Rathiya 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is formula for Csa of sphere?

Posted by Shubham Singh 8 years, 2 months ago

CBSE > Class 09 > Mathematics

4 answers

Sami Sri N 8 years, 2 months ago

2πr*r or two pie r square

0Thank You

Shivangi Chauhan 8 years, 2 months ago

It is 4πr². U Can take π as 22/7 or 3.14

0Thank You

Dhruvrajsinh Vala 8 years, 2 months ago

CSA and TSA of sphere is equal which is 4×π×r×r , you can assume π =22/7 unless stated otherwise.I hope it helps you.

0Thank You

Preetham Sai 8 years, 2 months ago

4×3.14×r×r

0Thank You

ANSWER

SAI 2 2015 - 16 q no. 17

Posted by Leena Upaguptan 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Trapezium property

Posted by D 57 8 years, 2 months ago

CBSE > Class 09 > Mathematics

4 answers

Preetham Sai 8 years, 2 months ago

Length of median is half of sum of parallel sides

0Thank You

Durga Verma 8 years, 2 months ago

Two opposite sides are parallel

0Thank You

Durga Verma 8 years, 2 months ago

Sum of two angels on non parallel side is always 180

0Thank You

Umesh Bhadauriya 8 years, 2 months ago

One pair parallel

1Thank You

ANSWER

1+1+1+1+1-2-6-11+15+-76-+577-+678-+886

Posted by Biswaranjan Pattanayak 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Yuv Raj 8 years, 2 months ago

2218

1Thank You

ANSWER

A+b+c =√6+√6= 0

Posted by Prakharsahu Sahu 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

if the volume of a sphere increased by 25% then by what % its radius will increase?

Posted by Tripti Lal 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

2x³+3y³-3z³ simplify....?

Posted by Aarti Karera 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

O is the centre of the circle .The distance between P and Q is 4 cm .Find the angle ROQ

Posted by Sunny Verma 8 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Manish Kumar 8 years, 2 months ago

Uuuuuuu

2Thank You

Tripti Lal 8 years, 2 months ago

can you please elaborate the question by showing diagram or giving more clues.

2Thank You

ANSWER

A box contains pencils, sketch pen and ink pen in the ratio 5:8:3.If the number of sketch pens is 12 more than the number of pencils, find the number of ink pen in the box.

Posted by Vinay Pachpohar 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Tripti Lal 8 years, 2 months ago

no. of ink pens is 12.

2Thank You

ANSWER

A box

Posted by Vinay Pachpohar 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Prove that the qudrilateral is a parallellogram when one side is parallel

Posted by Rakesh Angadi 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Tripti Lal 8 years, 2 months ago

this statement cannot be proved because if one pair of opposite sides are parallel in a quadrilateral it can be trapezium

2Thank You

ANSWER

An equilateral triangle of side 9cm is inscribed in a circle.Find radius of the circle.

Posted by Anupam Kumar 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Rakesh Angadi 8 years, 2 months ago

9cm

3Thank You

ANSWER

√3×√3=?

Posted by Amey Vedpathak 8 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Priyanka S 8 years, 2 months ago

2Thank You

Pragya Nayak 8 years, 2 months ago

2Thank You

ANSWER

An equilateral triangle of side 9cm is inscribed in a circle.find the radius of the circle

Posted by Anupam Kumar 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If a^3+1÷a^3=322 FIND a+1÷a

Posted by Arpit Singh 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Avatar invested ₹12000 in a bank after 2 years ,he invested ₹ 6000 more at the end of three years ,he received ₹ 21,360 .Find the rate of interest

Posted by Roshini Pm 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Construct a triangle whose perimeter is 12cm and base 45cm and 60cm ?

Posted by Anish Anish 8 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Harsh Dev Kumar 8 years, 2 months ago

By using =length×base 12×45=540 540×60=32‚400 32‚400÷540=60 Ans=60

1Thank You

ANSWER

The surface area of cuboid is 1357 sq. Cm.if it's dimensions are in ratio of 4:2:1, then it's length is

Posted by Tripti Aggarwal 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

M.c.q

Posted by Kapil Gupta 8 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What is homogenous mixture

Posted by Niraj K 8 years, 2 months ago

CBSE > Class 09 > Mathematics

3 answers

Iniyasudharsan Gd 8 years, 2 months ago

There are all types of mixtures, and we encounter them frequently in our daily lives. Mixtures can be found in the liquids we drink, the foods we eat, and the air we breathe. Homogeneous mixtures have the same composition throughout, and the individual parts of the mixture are not easily identifiable. Homogeneous mixtures are also referred to as solutions. While we normally think of solutions as liquids, such as soft drinks and lemonade, they can actually be in the form of solids, liquids, and gases. Homogeneous mixtures can also be a combination of these forms, as in a liquid-gas mixture.

1Thank You

Pragya Nayak 8 years, 2 months ago

The mixture is said to be homogeneous mixture if it has consist of one type of particle

2Thank You

Pk Kumar 8 years, 2 months ago

The mixtre which is made up of only one type of element is homogeneous mixture ex lemonade

0Thank You

ANSWER