CBSE > Class 11 > Mathematics | CBSE Board | Homework Help

let the length of rope be x. rope used to tie box= 1/4 of x= x/4 remaining rope = x-x/4=3x/4 rope used to make skipping rope= 3x/4*5/9= 5x/12 remaining rope =3x/4-5x/12= 4x/12 4x/12=120 x= 360 cm lenght of rope. rope used to tie box= 360*1/4=90cm

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Purva Jain 5 years, 6 months ago

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What does intervals mean in chapter sets? Plz ans

Posted by Divyanshi S 5 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Amit Rout 5 years, 6 months ago

Intervals refers to the range of elements that can lie between two real numbers

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Write the set of all positive integers whose cube is odd

Posted by Rakesh Kumar 5 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Divyanshi S 5 years, 6 months ago

Set={1,3,5,7,9,11,13,15,17,19,21...............}

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Miscellaneous ex ques no 1

Posted by Simran Kaur 5 years, 6 months ago

CBSE > Class 11 > Mathematics

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What should be subtracted from -3 to get -9

Posted by Kavita Kumari 5 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Bhavya Sharma 5 years, 6 months ago

-3 - x = -9

-x = -9 +3

-x = -6

x = 6

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Find the domain and range of the given real function- f(x)= -|x|

Posted by Aman Verma 5 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Amit Rout 5 years, 6 months ago

Here we can put any real value of x therefore domain of f = R and to find the range you can use the following rules of modulus function

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How to log out from mycbseguide???????????????? ¿¿¿¿¿¿¿¿¿¿¿¿

Posted by ?Royal Thakur? 5 years, 6 months ago

CBSE > Class 11 > Mathematics

3 answers

The Innocent Boy ?? 5 years, 6 months ago

I also don't know gm

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Divyanshi S 5 years, 6 months ago

Why u want to log out?

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Pk . 5 years, 6 months ago

I don't know .......gm

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The hypotenuse of a right angle triangle has ends at point (1,3), (-4,1) . Find equation of legs of tringle

Posted by Tripathy Rasmi 5 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 5 years, 6 months ago

Base equation : y = 1

Perpendicular equation : x = 1

Step-by-step explanation:

For better understanding of the solution see the attached figure :

The base RQ of the triangle will be parallel to x-axis so the equation will be : y = constant

But the coordinates of the hypotenuse side is given to be (-4,1) so the y-intercept will be same. Hence, the equation will be y = 1

Now, for the equation of perpendicular the line will be parallel to the y-axis and the intercept will be equal to the x-intercept of the point (1,3). Hence, the required equation of the perpendicular : x = 1

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Class11-CBSE- straight line chapter -miscellaneous exercise-17number

Posted by Tripathy Rasmi 5 years, 6 months ago

CBSE > Class 11 > Mathematics

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if a + IB upon c + ID is equal to x +iy prove that x square + y square is equal to a square + b square upon c square + d square chapter name is comppex no

Posted by Abhay Chaudhary 5 years, 6 months ago

CBSE > Class 11 > Mathematics

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Find the general term in the expansion of (2x^2-1/3x^3)^10

Posted by Gunjan Lathwal 5 years, 6 months ago

CBSE > Class 11 > Mathematics

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Slove 3x < 12, when. 1=x is a natural number. 2=x is a real number

Posted by Pubg_Lover Amritpalsingh 5 years, 6 months ago

CBSE > Class 11 > Mathematics

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A metal sheet 27 cm long ,8 cm broad and 1 cm thick is melted in to a cube .What will be the difference between the surface areas of two solids .

Posted by Yatinder Chauhan 5 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Sia ? 4 years, 7 months ago

Volume of sheet = volume of cube
First we will calculate volume of metal sheet =l X b x h
= 27 x8 x1=216cm³
So volume of the cube is also 216 cm³
216=a³

So surface area of sheet = 2(lb+bh+hl)
= 2(27x8+8x1+1x27)
= 502cm²
And surface area of cube
=6a²
=6 x6^2=216cm²
Difference between surface area = 502-216=286cm²