Ask questions, doubts, problems and we will help you..
Ask questions which are clear, concise and easy to understand.
Ask Question
CBSE, JEE, NEET, CUET
Question Bank, Mock Tests, Exam Papers
NCERT Solutions, Sample Papers, Notes, Videos
Posted by Anas Ali 3 years, 3 months ago (13107029)
- 3 answers
Mohit Singh 3 years, 3 months ago (13766340)
Asad Alam 3 years, 3 months ago (13477277)
Posted by Sadhan Vijaya Kumar 3 years, 3 months ago (11813955)
- 5 answers
Sagar Shil 3 years, 3 months ago (13753324)
Posted by Shiva Shiva 3 years, 3 months ago (4128675)
- 2 answers
Posted by Aniket Topwal 3 years, 3 months ago (11954632)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
Let A(a, a), B(-a, -a) C{tex}\left( { - \sqrt 3 a,,\sqrt 3 a} \right){/tex}
{tex}AB = \sqrt {{{( - a - a)}^2} + {{( - a - a)}^2}} = \sqrt {8{a^2}} = 2\sqrt 2 a{/tex}
{tex}BC = \sqrt {{{( - \sqrt 3 a + a)}^2} + {{(\sqrt 3 a + a)}^2}} = 2\sqrt 2 a{/tex}
{tex}AC = \sqrt {{{( - \sqrt 3 a - a)}^2} + {{(\sqrt 3 a - a)}^2}} = 2\sqrt 2 a{/tex}
{tex}\therefore {/tex} AB = BC = AC = {tex}2\sqrt 2 a{/tex}
{tex}ar\Delta ABC = \frac{{\sqrt 3 }}{4} \times {(side)^2}{/tex}
{tex} = \frac{{\sqrt 3 }}{4} \times \left( {2\sqrt 2 a} \right)^2{/tex}
{tex} = 2\sqrt 3 {a^2}{/tex} sq. units
Posted by Aryan Dhanraj 3 years, 3 months ago (13113154)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
Database Management System (DBMS) is a collection of programs that enable users to create, maintain a database, and control all the access to the database. The primary goal of the DBMS is to provide an environment that is both convenient and efficient for users to retrieve and store information. The advantages of using DBMS for school are as follows:
- In school, DBMS is used to store the data about students, teachers, and any other related things at a centralised location.
- It provides security to the personal information of the school, stored in it.
Posted by Nihal Mishra 3 years, 3 months ago (9056696)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
The Bengal School of Art, commonly referred as Bengal School, was an art movement and a style of Indian painting that originated in Bengal, primarily Kolkata and Shantiniketan, and flourished throughout the Indian subcontinent, during the British Raj in the early 20th century.
Posted by Vinod Sharma 3 years, 3 months ago (13734257)
- 4 answers
Prity Mandal 3 years, 3 months ago (13779179)
Chhavi Sharma 3 years, 3 months ago (13734223)
Jessika Chauhan 3 years, 3 months ago (12960530)
Posted by Rachit Goyal 3 years, 3 months ago (13759372)
- 3 answers
Posted by E. Ragini Sree 3 years, 3 months ago (13619043)
- 4 answers
Sushamita Singh 3 years, 3 months ago (13659975)
Vamsi Kotthapalli 3 years, 3 months ago (13758797)
Posted by Divya Bisht 3 years, 3 months ago (13644512)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
Pushkar Singh Dhami
Satpal Maharaj
Premchand Aggarwal
Ganesh Joshi
Dhan Singh Rawat
Posted by Ritu Kumari 3 years, 3 months ago (13724544)
- 2 answers
Posted by Deepak Thakur 3 years, 3 months ago (13755706)
- 2 answers
Posted by Vanshu Maheshwari 3 years, 3 months ago (13609536)
- 4 answers
Deerdha Arroa 2 years, 1 month ago (13765830)
Few rules to keep homework help section safe, clean and informative.
- Don't post personal information, mobile numbers and other details.
- Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
- Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
- Ask specific question which are clear and concise.
Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.
Posted by Manish Tyagi 3 years, 3 months ago (13759237)
- 1 answers
Mukesh Ray 3 years, 3 months ago (13742412)
Posted by Sohit Hudda 3 years, 3 months ago (13759169)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
किसी परीक्षण के लिये निर्धारित प्रक्रिया परीक्षण विधि कहलाती है। सही परीक्षण के लिये सुविचारित परीक्षण विधि का उपयोग करना बहुत आवश्यक है। परीक्षण वह मानकीकृत साधन है जिसके द्वारा संपूर्ण मानव व्यवहार के विभिन्न पक्षों संबंधी विशेषताओं का मात्रात्मक एवं गुणात्मक अध्ययन किया जाता है
Posted by Vis H 3 years, 3 months ago (5474097)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
Given: A circle with centre O. A tangent CD at C.
Diameter AB is produced to D.
BC and AC chords are joined, ∠BAC = 30°
To prove: BC = BD
Proof: DC is tangent at C and, CB is chord at C.
Therefore, ∠DCB = ∠BAC [∠s in alternate segment of a circle]
⇒ ∠DCB = 30° …(i) [∵ ∠BAC = 30° (Given)]
AOB is diameter. [Given]
Therefore, ∠BCA = 90° [Angle in s semi circle]
Therefore, ∠ABC = 180° - 90° - 30° = 60°
In ΔBDC,
Exterior ∠B = ∠D + ∠BCD
⇒ 60° = ∠D + 30°
⇒ ∠D = 30° …(ii)
Therefore, ∠DCB = ∠D = 30° [From (i), (ii)]
⇒ BD = BC [∵ Sides opposite to equal angles are equal in a triangle]
Hence, proved.
Posted by Saksham Sharma 3 years, 3 months ago (10615988)
- 0 answers
Posted by Chhathu Pandit 3 years, 3 months ago (13734677)
- 2 answers
Posted by Chhathu Pandit 3 years, 3 months ago (13734677)
- 0 answers
Posted by Yugesh Kumar S 3 years, 3 months ago (13512022)
- 1 answers
Pearl S 3 years, 3 months ago (11082683)
Posted by Chhathu Pandit 3 years, 3 months ago (13734677)
- 0 answers
Posted by Siddharth Yadav 3 years, 3 months ago (13737775)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
Given,
There are some dietary requirements of the staple food of the adolescent students of some schools.
To Find,
(1) 2 food items including one pulse and one cereal.
(2)The minimum cost of one pulse and one cereal.
(3) The formulated version of the corresponding linear programming problem.
(4)The problem graph,
Solution,
We can solve this mathematical linear programming problem using the method.
At first let's assume that the 2 food items be, Wheat and arhar dal or pigeon peas.
The rate of Wheat is Rs. 20 per kg and the rate of Arhar dal is Rs. 100 per kg.
So, we need to minimize the 100x+20y.
We know protein in arhar dal is 220gm / kg and in wheat 100gm/kg.
Carbohydrate in arhar dal is 630gm / kg and in wheat 760gm/kg.
Suppose the dietary requirements of adolescent students are as below,
- The requirement for protein is 60gm
- Carbohydrate is 1500gm.
So we can formulate our corresponding linear programming problem as follows,
Zminimize=100x+20y
Constrains are-
{tex}\begin{aligned} & 220 x+100 y \geq 60 \\ & 630 x+760 y \geq 1500 \text { and } \mathrm{x}, \mathrm{y} \geq 0 \end{aligned}{/tex}
Hence, the answers are as follows- The two food items including one pulse and one cereal are Wheat and Arhar dal/ pigeon peas. The arhar dal is Rs.100/kg and wheat is Rs. 20/kg. The linear programming problem is -Zminimize=100x+20y, Constrains are- {tex}\begin{aligned} & 220 x+100 y \geq 60 \\ & 630 x+760 y \geq 1500 \text { and } \mathrm{x}, \mathrm{y} \geq 0 \end{aligned}{/tex} and x,y{tex}\geq 0{/tex}
Posted by Mahi Rajput 3 years, 3 months ago (13759114)
- 4 answers
Dilraj Singh 3 years, 3 months ago (13762015)
Posted by Daksh Dhanwani 3 years, 3 months ago (10503760)
- 1 answers
Posted by Swara Pandya 3 years, 3 months ago (13695826)
- 2 answers
Preeti Dabral 3 years, 3 months ago (2983787)
1.Go to the Review tab.
2.In the Changes group, click on the Track Changes option and select Highlight Changes.
3.In the Highlight Changes dialog box, check the option – 'Track changes while editing. This also shares your workbook'. ...
4.Click OK.
Posted by Mandeep Mondal 3 years, 3 months ago (11761512)
- 1 answers
Preeti Dabral 3 years, 3 months ago (2983787)
x {tex}\le{/tex} {tex}\frac{-19}{13} {/tex}
Posted by Mandeep Mondal 3 years, 3 months ago (11761512)
- 1 answers
Posted by Bhumika Kapoor 3 years, 3 months ago (13711826)
- 1 answers
Vamsi Kotthapalli 3 years, 3 months ago (13758797)
Posted by Vidhi Maan 3 years, 3 months ago (9812885)
- 2 answers
Preeti Dabral 3 years, 3 months ago (2983787)
The biological component includes the plants, animals, insects, earthworms, nematodes, arthropods, protozoa, fungi, and bacteria that live in the soil. The biological community is a very important component of soil health
Raunak Yadav 3 years, 3 months ago (13767837)
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
....,..., ....,....., 3 years, 3 months ago (13443321)
2 Thank You