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

We know that tangent are drawn to the point of contact is perpendicular to its radius so parellel tangents have each 90 deg. Angle but these are also the alternate interior angle so lines are parallel

1Thank You

Honey ??? 7 years, 1 month ago

Just show the alternate angles are equal means 90 deg. then the line will be parallel

1Thank You

ANSWER

If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points the other two sides are divided in the same ratio.

Posted by Vibhav Jha 7 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Rishab Jain 7 years, 1 month ago

It is thales theorem and also known as basic proportionality theorem(BPT). You see in your ncert maths book

1Thank You

Ankit Jaat 7 years, 1 month ago

Its bpt..... Krna kya h.. Question hii incomplete h

1Thank You

Honey ??? 7 years, 1 month ago

In short words it is thales theorem

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ANSWER

Which stream should i choose after 10th

Posted by Ankit Jaat 7 years, 1 month ago

CBSE > Class 10 > Mathematics

6 answers

Bhuvnesh Rajpurohit 7 years, 1 month ago

you should go in football

1Thank You

Geetanand Yadav/ Rao Sahab??????✌??? 7 years, 1 month ago

No maths or arts

1Thank You

Ankit Jaat 7 years, 1 month ago

Are you sure Vishaka

1Thank You

Vishakha Singh? 7 years, 1 month ago

Then choose commerce phe

1Thank You

Ankit Jaat 7 years, 1 month ago

Nothing... My career is in sports

0Thank You

Geetanand Yadav/ Rao Sahab??????✌??? 7 years, 1 month ago

Which subject you like most

2Thank You

ANSWER

The probability of selecting a rotten apple randomly from a heap of 900 apples is 0.18. What is the number of rotten apples in the heap

Posted by Sushant Chaubey 7 years, 1 month ago

CBSE > Class 10 > Mathematics

5 answers

Sushant Chaubey 7 years, 1 month ago

Let the number of rotten apples be x. P(rotten apple) = x/900 x/900 = 0.18/1 x=900×0.18 x = 162 Hence, the number of rotten apples in the heap is 162.

1Thank You

Rishab Jain 7 years, 1 month ago

162 Apple

1Thank You

Satys Singh 7 years, 1 month ago

162

1Thank You

Ankit Jaat 7 years, 1 month ago

162 ?

2Thank You

Vishakha Singh? 7 years, 1 month ago

162

3Thank You

ANSWER

Is all questions come from n.c.e.r.t. books only in mathematics? Plz answer this

Posted by Shashwat Singh 7 years, 1 month ago

CBSE > Class 10 > Mathematics

4 answers

Bhuvnesh Rajpurohit 7 years, 1 month ago

80% ncert 20% from outsidw

0Thank You

Rishab Jain 7 years, 1 month ago

No.but 70percent

0Thank You

Ankit Jaat 7 years, 1 month ago

I got cbse sample papers... Anyone want that

1Thank You

Vishakha Singh? 7 years, 1 month ago

Most of the ques. come from NCERT but not all....as far as I know....but for sure the methods to solve/prove those ques. is based on NCERT if we are able to understand ques.

2Thank You

ANSWER

solve pair of linear equation:(a-b)x +(a+b)y=a*a-2ab-b*b And (a+b)(x+y)=a*a+b*b

Posted by Geetanand Yadav/ Rao Sahab??????✌??? 7 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the sum of first 40 positive integers divisible by 6.

Posted by Vanshika Mehta 7 years, 1 month ago

CBSE > Class 10 > Mathematics

4 answers

Rishab Jain 7 years, 1 month ago

4920

1Thank You

Geetanand Yadav/ Rao Sahab??????✌??? 7 years, 1 month ago

AP=6,12,................,240 n=40,d=6,l=240 Sn=n/2(a+l) Sn=40/2(6+240) Sn=20(246) Sn=4920. Ans..........

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Ankit Jaat 7 years, 1 month ago

andFindtheratiooftheareaof

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Puja Sahoo? 7 years, 1 month ago

4920......

2Thank You

ANSWER

In the right ? ABC, angle A =90 and AD perpendicular bc. Then BD➗ DC

Posted by Gautav Barman 7 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Rishab Jain 7 years, 1 month ago

Matlab

1Thank You

Puja Sahoo? 7 years, 1 month ago

Shayad question adha hai..........??

3Thank You

ANSWER

X square - 2 x minus 8

Posted by Utkarsh Patel 7 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Dhirendra Behera 7 years, 1 month ago

The value of x can be (-2) and 4.

0Thank You

Yogita Ingle 7 years, 1 month ago

x² - 2x - 8
= x² - 4x + 2x - 8
= x(x - 4) + 2 ( x - 4)
= ( x + 2) (x - 4)

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ANSWER

If one zero of quadratic polynomial x square minus x minus into 2 plus 2k is 4 find the value of k

Posted by Abhishek Kumar 7 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Rita Gokani 7 years, 1 month ago

X^2-x-(2+2k)=0 (4)^2 - 4-(2+2k)=0 16-4-2-2k=0 10-2k=0 -2k=-10 K=5

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ANSWER

Two water taps together can fill a tank in 9 3/8 hours. The tap of larger diameter takes 10 hours less than the smaller one to fill the tank separately. Find the time in which each tap can separately fill the tank.

Posted by Shreenidhi Karkun 7 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Geetanand Yadav/ Rao Sahab??????✌??? 7 years, 1 month ago

For small tap 18 hours and for big tap 12hours

2Thank You

Rita Gokani 7 years, 1 month ago

Let the time taken by smaller tap be xhrs And larger =x-10hrs ATQ 1/X +1/X-10=8/75 SOLVE...

1Thank You

S N Mahato 7 years, 1 month ago

Let time taken by the largest tap to fill the tank completely be x hours Then volume it can fill in 1 hour is 1/X Then volume it can fill in 75/8 hours is75/8x Then time taken by smaller tab to fill the tank completely is X + 10 hours Volume it can fill in 1 hour is 1/X + 10 Then volume it fill in 75/8 hours is 75 / 8 ( X + 10) Tank filled by the largest tab + tank filled by smaller tab = 1 A/Q..... 75 / 8X + 75 / 8 (x + 10 )= 1 By calculating this you will get the answer .thank you

1Thank You

ANSWER

ABCD is a square with e,f,g,h as mid point of AB,BC,CD,DA respectively.M is any point inside square such that area of quadrilateral AeMh is 20sq.cm,BeMf is 32sq.cm, DgMh is16sq.cm.Find the area of quadrilateral CgMf.

Posted by Muskan Kumari 7 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

2+2q+r=5 Find value of q and r

Posted by Tkdf Ghjg 7 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Geetanand Yadav/ Rao Sahab??????✌??? 7 years, 1 month ago

2q+r=3 Then value of r=0,1 If r=0 ,then value of q=3/2 If r=1,then value of q=1

1Thank You

ANSWER

Which chapters from maths are enough to practise from ncert

Posted by Soumya Agrawal 7 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Maisha Singh 7 years, 1 month ago

Ncert is main for all other subjects as well... Obviously ncert is enough if u practice each n evry question with all the concepts clear...

2Thank You

Mohammad Amaan 7 years, 1 month ago

I think, all

3Thank You

ANSWER

How to nake linear eq in two variable

Posted by Super Singh 7 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If m and n are prime positive integers prove that root m + root n is an irrational number

Posted by Aysha Shayan 7 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Show that the sum of first n even natural numbers is equal to (1+1/n)times the sum of first n odd natural numbers

Posted by Prashant Parihar 6 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 7 months ago

Let S₁ be the sum of the first n even natural numbers.
Then, S₁ = 2 + 4 + 6 + ....+ 2n
{tex}\Rightarrow{/tex} S₁ = {tex}\frac{n}{2}{/tex}[2 {tex}\times{/tex} 2 + (n - 1)2]
{tex}\Rightarrow{/tex} S₁ = {tex}\frac{n}{2}{/tex}[4 + 2n - 2] = n(n + 1) ........(i)
Let the S₂ be the sum of the first n odd natural numbers.
Then, S₂ = {tex}\frac{n}{2}{/tex}[2 {tex}\times{/tex} 1 + (n - 1)2] = n²
From (i),we have, {tex}{/tex} {tex}{/tex}{tex}S_1=n^2(1+\frac{1}{n})=(1+\frac{1}{n})n^2=(1+\frac{1}{n})S_2{/tex}

Therefore, the sum of first n even natural numbers is equal to (1 + {tex}\frac{1}{n}{/tex}) times the sum of the first n odd natural numbers {tex}=(1+\frac{1}{n})S_2{/tex}

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ANSWER

A hollow cone is cut by a plane parallel to the base and the upper portion is removed if the curved surface of the remainder is 1 by 9 of the curved surface of the whole cone find the ratio of the line segment in which the altitude of the cone is divided by the plane

Posted by Sreedeep Dev K 7 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Puja Sahoo? 7 years, 1 month ago

Same, question mere preboard me aya tha bt apne, 1 by 9 of curved surface are, pucha hai, hmara, 8 by 9 th tha

2Thank You

ANSWER

In the given figure PQ and PR are tangents to the circle with Centre O such that angle QPR is equal to 50 degree then find the angle AOC you are

Posted by Shallu Jaiswal 7 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Puja Sahoo? 7 years, 1 month ago

Yupe, bt where is yur fig..........

2Thank You

Anshika / U Can Call Me Alien ???? 7 years, 1 month ago

In the figure form , PQ=PR, Hence it made an isosceles triangle PQR= 180 2Q=180-50 2Q=130 Q=130/2 Q=65 And, Angle OQP=90 In which RQP=65 So, angle OQR=90-65=25 Hence, the angle is 25 HOPE IT HELPS!

3Thank You

Honey ??? 7 years, 1 month ago

Figure kahan hain

1Thank You

ANSWER

I am forgetting the sum very soon what should I do to remember it for a long time

Posted by Guru Kiran Kr 7 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Honey ??? 7 years, 1 month ago

Which sum

3Thank You

ANSWER

AD is median of triangle ABC, AB2+AC2=148 & AD=7. Find BC.

Posted by Preet Kotiya 7 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Ashwani Yadav 7 years, 1 month ago

BC = 10 units

0Thank You

ANSWER

If the sum of n terms of an AP is 2n + 5 then prove that aN =4n+3

Posted by Niya Sharma 7 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Madhur Dubey ??? 7 years, 1 month ago

Since,. Sn=2n+5. Therefore,. Sn-1=2(n-1)+5 Or,. =2n+3. We Know that,. An=Sn-Sn-1. Or,. =2n-1-(2n+3). Or,. = -4 Since, value of n donot exist Therefore this donot form any A.P. Please check your question Sn must be 2n²+5

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ANSWER

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