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

Given , a=15 , b=28 , c=41 Semiperimetre = 15+28+42/2 = 84/2 = 42 Area = √s(s-a)(s-b)(s-c) A=√42(42-15)(42-28)(42-41) A=√42×27×14×1 A=√2×3×7×1×3×3×3×1×2×7×1×1 A=2×3×7×3×1×1 A=126 cm*2

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Angle bisector Given value of x

Posted by Saima Noor 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

7 root 3 by 10 root 3

Posted by Deepak Santhosh 5 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Mohd Raza 5 years, 3 months ago

7/10

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Jaswinder Singh 5 years, 3 months ago

7/3 and 10/3

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Yash Jain 5 years, 3 months ago

7/10

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SIMPLIFY : 5√ x^4 4√x^3 3√x^2 √x.

Posted by Gaurav Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Sharma 5 years, 3 months ago

X119/120

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ANSWER

How to get 50 above .marks in maths

Posted by Sumana Singh 5 years, 3 months ago

CBSE > Class 09 > Mathematics

11 answers

Mohd Raza 5 years, 3 months ago

Practice being concentrated and interested in maths.This is how u will find maths interesting and start scoring good marks in it.

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Shakti Sarkar 5 years, 3 months ago

Practice more and ask doubts in class. It will make you a topper.

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Noty Kannika 5 years, 3 months ago

Dont feae for maths do and understand the sums method which will make you to have a good marks...

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Raj Kumar 5 years, 3 months ago

Practice and More Practice

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Mortal Combat 5 years, 3 months ago

dont get tensed

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Prashant Choubey 5 years, 3 months ago

Dont take more stress keep calm and if possible manage the last year question paper because my 32 /40 marks in maths came from last year question paper

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Sarika Sharma 5 years, 3 months ago

Do hard work and focus in math

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Shraddha Panchbhai 5 years, 3 months ago

hiiii??

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Jaswinder Singh 5 years, 3 months ago

Do more hard work and spend more time to study

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Shraddha Panchbhai 5 years, 3 months ago

do more hardwork and avoid laziness.revise it and practice it many time

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Krish Choudhary 5 years, 3 months ago

Revise syllabus more time

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Find The area of isosceles triangle with unequal side as 8cm and each side as5cm

Posted by Kanchan Saini 5 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Mohd Raza 5 years, 3 months ago

By herons formula

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Mohd Raza 5 years, 3 months ago

12cm sq.

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Jaswinder Singh 5 years, 3 months ago

8×5 =40

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Jaswinder Singh 5 years, 3 months ago

8×5 = 49

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If a if a transversal insert intersect two Parallel Lines then prove that each pair of alternate angle are equal

Posted by Prem Lata 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Jaswinder Singh 5 years, 3 months ago

Transversal are supplementary THEN the lines are parallel

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Sahil Saudagar 5 years, 3 months ago

Ruk bata ta hu

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If x=2+√3 , then find x - 1/3.

Posted by Gaurav Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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How to do middle term split up

Posted by Sanidhya Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Exercise 6.3 full questions with solutions

Posted by Ashish Meelu663 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 3 months ago

Check solution here : https://mycbseguide.com/ncert-solutions.html

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√5-2√2 /√20+√32

Posted by Jiban Pradeep 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 3 months ago

√5-2√2 /√20+√32=7.260

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The class mark of the class 90-120 is

Posted by Meetu Nadir 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If x=2+root2 find the value of x +1/x

Posted by Ankit Dubey 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Mohit Agrawal 5 years, 3 months ago

8+2root2

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Arnit Raj 5 years, 3 months ago

(6+root2)1/2

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4 is a zero of the polynomial, p(x)=x-4

Posted by Mukesh Yadav 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Sarika Sharma 5 years, 3 months ago

Yes

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45516111? 46 5 years, 3 months ago

Yes

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If pr= qs and pq=qr then prove that pq= 1/3ps

Posted by Divick Pandey 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

In triangle ABC sides AB and AC are produced to point P and Q such that angle PBC < angle QCB prove that AC >AB

Posted by Arushi Gaur 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 3 months ago

Given : Side AB and AC of {tex}\triangle{/tex}ABC are extended to points P and Q respectively. Also ∠PBC < ∠QCB.
To Prove : AC > AB.
Proof : ∠PBC < ∠QCB
{tex}\therefore{/tex} -∠PBC > - ∠QCB
{tex}\therefore{/tex} 180^o - ∠PBC > 180^o - ∠QCB
{tex}\therefore{/tex} ∠ABC > ∠ACB
{tex}\therefore{/tex} AC > AB . . . [Side opposite to greater angle is longer]

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A plastic box 1.5 metre long 1.25 m wide and 65 M deep is to be made it is open at the top ignoring 20 metre

Posted by Disha Singh 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 3 months ago

l = 1.5 m, b = 1.25 m, h = 65 cm = 0.65 m
∴ The area of the sheet required for making the box.
= lb + 2(bh + hl)
= (1.5) (1.25) + 2{(1.25)(0.65) + (0.65) (1.5)}
= 1.875 + 2{0.8125 + 0.975}
= 1.875 + 2(1.7875) = 1.875 + 3.575 = 5.45 m²
The cost of sheet for it = Rs. 5.45 × 20 = Rs. 109

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In the figure of side BC of a triangle ABC and angle ACD meet at point D prove that angle BAC =1/2 angle BAC

Posted by Anas Paaha 5 years, 3 months ago

CBSE > Class 09 > Mathematics