CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

(Distance bw wall and foot of ladder)²+(height of window)²=(length of the ladder)² (2.5)²+(6)²=6.25+36=42.25 =>Lenngth of ladder =√42.25=6.5m______Ans

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What is the Roman number of 5000?

Posted by Dilkhush Kumar 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

{tex}\bar V{/tex}

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For what value of k, is 3 a zero of polynomial

Posted by Sheshmani Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Ranjan Raj 7 years, 3 months ago

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Solve the following system of equations 8v-3u=5uv 6v-5u=-2uv

Posted by Sheshmani Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Sweta Verma 7 years, 3 months ago

V= 19/22 u= 7/11

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Raunak _ Pandey ?? 7 years, 3 months ago

No solution

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The angle of cyclic quadrilateral ABCD are:<A=(6x+10)°,<B=(5x)°,

Posted by Yash Adhav 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Rakesh Kumar Tiwari 7 years, 3 months ago

sum of opposite angles = 180 sum of all the interior angles= 360

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Umit Marandi 7 years, 3 months ago

360

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To prove sin^4 + cos ^4 = 1

Posted by Raunak _ Pandey ?? 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Vaibhav Goel 7 years, 3 months ago

Lhs Sin4 +cos4 (Sin2)2+(cos2)2 (sin2 +cos2) 2 (1)2 1 Rhs 1 Verified

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How to prepare maths for board exams. Anyone please

Posted by Radhika :) Mishra:} 7 years, 3 months ago

CBSE > Class 10 > Mathematics

7 answers

Ankit Bist 7 years, 3 months ago

Do it yourself because i also don't know?

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Brahmani Sharma 7 years, 3 months ago

Daily practise will make u perfect so practise hard

1Thank You

Angel James 7 years, 3 months ago

Hello sejal

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Shubham Carbon 7 years, 3 months ago

Study hard! Prepare these topics well:- 1. Trigonometry 2. Circles 3. Triangles 4. Quadratic Equations 5. Co-ordinate Geometry 7. Statistics 8. Probabilty

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Sejal Ameta 7 years, 3 months ago

And hyyy aleena

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Sejal Ameta 7 years, 3 months ago

Roz ki practice se

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Angel James 7 years, 3 months ago

Hyyy

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If m times the mth of an ap is equal to n times nth term find (m+n)th term of an ao

Posted by Kartik Gedekar 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Golu M 7 years, 3 months ago

Zero

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Sanjana Yadav 7 years, 3 months ago

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What is the mean and standard deviation of 6,7,8,9 and 2 respectively ?

Posted by Dakshesh Nayak 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

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How to represent three upon four on the number line.

Posted by Ayush Chauhan 7 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Uttam Kumar 7 years, 3 months ago

Divide 0-1into four equal parts and third part will denote3/4

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Sanjivani Gawade 7 years, 3 months ago

Question

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Sanjivani Gawade 7 years, 3 months ago

Thats not the answer for his queston

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Sanjana Yadav 7 years, 3 months ago

Hello ayush

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I don't have a question regarding any chapter or concept. I am in 10th Class NCERT. My board exams are coming and i am not able to understand things whether it's science or mathematics. Is there any expert or teacher who can give me some important questions. I am really afraid. Please.

Posted by Farzan Yaseen 7 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Sanjivani Gawade 7 years, 3 months ago

Dont worry Radhika just get focused and study hard

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Sanjana Yadav 7 years, 3 months ago

Gud answer Rakesh

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Rakesh Kumar Tiwari 7 years, 3 months ago

If you can't understand, what will you do with the questions.

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Sanjana Yadav 7 years, 3 months ago

Omg

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Radhika :) Mishra:} 7 years, 3 months ago

Im also afraid ??please anyone help us????

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Give some tips about 10th CBSE board papers

Posted by Mita H Shukla Shukla 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Ratna Bhargaw 7 years, 3 months ago

Nice thought Radhika

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Radhika :) Mishra:} 7 years, 3 months ago

Write clearly and properly , if you don't know the correct answer than write anything related to that chapter , if u writing any definition than u have to write it's formula also, lastly if you don't know the correct answer so you can get marks if your formula is correct. That's all

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X-2/x-3+x-4/x-5=10/3

Posted by Siddu Sundara 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

The given equation is:
{tex}\frac { x - 2 } { x - 3 } + \frac { x - 4 } { x - 5 } = \frac { 10 } { 3 }{/tex}

By cross multiplication method we have,
{tex} \frac { ( x - 2 ) ( x - 5 ) + ( x - 4 ) ( x - 3 ) } { ( x - 3 ) ( x - 5 ) } = \frac { 10 } { 3 }{/tex}
{tex}\Rightarrow \frac { \left( x ^ { 2 } - 7 x + 10 \right) + \left( x ^ { 2 } - 7 x + 12 \right) } { \left( x ^ { 2 } - 8 x + 15 \right) } = \frac { 10 } { 3 }{/tex}
{tex}\Rightarrow \frac { \left( 2 x ^ { 2 } - 14 x + 22 \right) } { \left( x ^ { 2 } - 8 x + 15 \right) } = \frac { 10 } { 3 }{/tex}
{tex}\Rightarrow{/tex} 3(2x²- 14x + 22) = 10(x²- 8x + 15) [ by cross multiplication method ]
{tex}\Rightarrow{/tex} 6x² - 42x + 66 = 10x² - 80x +150
{tex}\Rightarrow{/tex} 4x² - 38x + 84 = 0 {tex}\Rightarrow{/tex} 2x²- 19x + 42 = 0
{tex}\Rightarrow{/tex} 2x²- 12x - 7x + 42 = 0 {tex}\Rightarrow{/tex} 2x(x -6 ) - 7(x - 6) = 0
{tex}\Rightarrow{/tex} (x - 6)(2x - 7) = 0 {tex}\Rightarrow{/tex} x - 6 = 0 or 2x - 7 = 0
Either x = 6 or x = {tex}\frac{7}{2}{/tex}.
Hence, the roots of given equation are 6 and {tex}\frac{7}{2}{/tex}.

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If HCF (a,b)=12 and a×b=1800,find the LCMof a and b

Posted by Shreyas Jayaram 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Radhika :) Mishra:} 7 years, 3 months ago

As we know that " Lcm×Hcf= product of two numbers" so, let lcm be 'a'.than a× hcf= product of two numbers. a× 12=1800 . a= 1800/12. a=150

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What is the compound interest of p=18000 for 2.5years at 10% per annum

Posted by Vaijnath Mitkari 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

By using year by year calculation
S.I. on Rs. 18000 at 10% per annum for 1 year
{tex} = \frac{{18000 \times 10 \times 1}}{{100}} = Rs.1800{/tex}
∴ Amount at the end of 1st year
= Rs. 18000 + Rs. 1800
= Rs. 19800
= Principle for 2nd year.
S.I. on Rs. 19800 at 10% per annum for 1 year
{tex} = \frac{{19800 \times 10 \times 1}}{{100}}{/tex}
= Rs. 1980
∴ Amount at the end of 2nd year
= Rs. 19800 + Rs. 1980
= Rs. 21780
= Principle for 3rd year
S.I. on Rs. 21780 at 10% per annum for {tex}\frac{1}{2}{/tex} year
{tex} = \frac{{21780 \times 10 \times 1}}{{2 \times 100}}{/tex}
= Rs. 1089
∴ Amount at the end of {tex}2\frac{1}{2}{/tex} years
= Rs. 21780 + Rs. 1089
= Rs. 22869
this is the required amount.
Now,
C.I. = Rs. 22869 – Rs. 18000
= Rs. 4869.

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chapter 1 question no. 4 exercise 1.2 given that hcf (306,657) =find lcm (306,657).

Posted by Anjali Pal 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Rupal ???? 7 years, 3 months ago

L.C.M = product of 2 numbers / H.C.F

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Cos45 Sen 30+cosec 30

Posted by Arun Banna 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 7 years, 3 months ago

Cos 45 = 1/√2
Sin 30 = 1/2
Cosec 30 = 2
Cos45 Sin30 + Cosec 30 = (1/√2) (1/2) + 2 = 1/2√2 + 2 = (1 + √2)/2√2 =

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Gunjan Girdhar 7 years, 3 months ago

(√2+3)÷2

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Cos4A_cos2A=sin4A_sin2A

Posted by Megha Kumari 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Megha Kumari 6 years, 9 months ago

Thanks

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Shiva Yadav Shiva Yadav 7 years, 3 months ago

22.5

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Chapter 9 question numbers 14☺️

Posted by Isha Pareek 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

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

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A circle is inscribed in a square of side 4 cm and an other circle in circumscribing the square . prove that area of the circumscribed circle is two times the area of inscribed circle

Posted by Swati Priya 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

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Prove that Thales theorem

Posted by Alok Gupta 5 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Alok Gupta 7 years, 3 months ago

Fast

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how to balance the reaction of sodium and water to give product sodium hydroxide and hydrogen

Posted by Komal Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 7 years, 3 months ago

Sodium metal reacts rapidly with water to form a colourless solution of sodium hydroxide (NaOH) and hydrogen gas (H₂).
2Na + 2H₂O → 2NaOH + H₂

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Anjali Singh 7 years, 3 months ago

2Na + 2H2O gives 2NaOH + H2 Kindly note: I was unable to write subscript characters , henceforth H2O and H2

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Exercise 3.6

Posted by Shubham Yadav 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

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What Is Euclid Division lemma.

Posted by Chanchal Dhiman 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Roman Reigns 7 years, 3 months ago

For any given two integers a and b there exists unique whole numbers p and q such that a=bq+r,where 0<_r<b

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SOLVE: sin48 - cos42

Posted by Krish Pusha 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 7 years, 3 months ago

We know sin(90- a) = cos a
cos 42 - cos 42 = 0

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Simran Samra 7 years, 3 months ago

Sin48 - cos(90-48)=sin48 - sin48 =0

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Chapter 4 exercise 4.2 Question number 4 find two consecutive positive integers, sum of whose squares is 365.

Posted by Shalom Gehlot 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Simran Samra 7 years, 3 months ago

Let numbers be x;x+1 (X)2+(x+1)2=365 X2+x2+1+2x=365 2x2+2x+1-365=0 2x2+2x-364=0 2(x2+x-182)=0 X2+x-182=0 X2-13x+14x-182=0 X(x-13)+14(x-13)=0 (X+14)(x-13)=0 X=-14;x=13 X=-14 rejected Other no. Is 13+1=14

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what is s+2÷6=7

Posted by Divya Dharshini 7 years, 3 months ago

CBSE > Class 10 > Mathematics