Incorrect URL accessed!!!!

Gaurav Seth 7 years, 3 months ago

43=7+(n-1)3

36+3=3n

39=3n

n=13

Puja Sahoo? 7 years, 3 months ago

There are 13 terms......

3Thank You

ANSWER

Find the ratio in which p(4,m) divides the line segment joining the points a(2,3) and b(6,-3).

Posted by Abhishek Kumar 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Dad'S Angel? 7 years, 3 months ago

Req. ratio is 1:1 and the value of m is 0

ANSWER

Construct an isosceles triangle whose base is 8cm and altitude it's 4cm and then a triangle whose sides are 1 1/2 times the corresponding sides of the isosceles triangle.

Posted by Tanisha Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Gaurav Seth 7 years, 3 months ago

Let us assume that ΔABC is an isosceles triangle having CA and CB of equal lengths, base AB of 8 cm, and AD is the altitude of 4 cm.

</header>

A ΔAB'C' whose sides aretimes of ΔABC can be drawn as follows.

Step 1

Draw a line segment AB of 8 cm. Draw arcs of same radius on both sides of the line segment while taking point A and B as its centre. Let these arcs intersect each other at O and O'. Join OO'. Let OO' intersect AB at D.

Step 2

Taking D as centre, draw an arc of 4 cm radius which cuts the extended line segment OO' at point C. An isosceles ΔABC is formed, having CD (altitude) as 4 cm and AB (base) as 8 cm.

Step 3

Draw a ray AX making an acute angle with line segment AB on the opposite side of vertex C.

Step 4

Locate 3 points (as 3 is greater between 3 and 2) A1, A2, and A3 on AX such that AA1 = A1A2 = A2A3.

Step 5

Join BA2 and draw a line through A3 parallel to BA2 to intersect extended line segment AB at point B'.

Step 6

Draw a line through B' parallel to BC intersecting the extended line segment AC at C'. ΔAB'C' is the required triangle.

Justification

The construction can be justified by proving that

In ΔABC and ΔAB'C',

∠ABC = ∠AB'C' (Corresponding angles)

∠BAC = ∠B'AC' (Common)

∴ ΔABC ∼ ΔAB'C' (AA similarity criterion)

… (1)

In ΔAA2B and ΔAA3B',

∠A2AB = ∠A3AB' (Common)

∠AA2B = ∠AA3B' (Corresponding angles)

∴ ΔAA2B ∼ ΔAA3B' (AA similarity criterion)

On comparing equations (1) and (2), we obtain

⇒

This justifies the construction.

Ram Kushwah 7 years, 3 months ago

If base =2x=8

x=4

Side² =x²+h²=16+16=32

side=4√2=4×1.41=5.64 cm

AB=AC=5.64 Cm BC=8 cm

Puja Sahoo? 7 years, 3 months ago

How to construct here?

Riya ? 7 years, 3 months ago

ya actually bhumika is right.

????? ❤️ 7 years, 3 months ago

Yaha pe construction kaise kare

ANSWER

Find the value of "k" if the equation is 2x+kx+3=0 how to do this question

Posted by Durga Appa 7 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Durga Appa 7 years, 3 months ago

Answer is coming as k=root of -24

Riya ? 7 years, 3 months ago

put the value in formula of discriminant:- D = b^2 - 4ac

Saurabh Singh Harariya 7 years, 3 months ago

Yes aditya is correct

Lionel Messi⚽️ 7 years, 3 months ago

Nothing D you put only a b and c

Lionel Messi⚽️ 7 years, 3 months ago

Find D or discriminant apply D = b2 - 4ac

ANSWER

Gbvvvx gg

Posted by Raghav Khaneja 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Vansh Sehgal 5 years, 11 months ago

Anyone online

Vansh Sehgal 7 years, 3 months ago

Means?

ANSWER

____ + ___ = 8 + + ____ -- ___ = 6 = = 13 8

Posted by Prince Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The nth term of an AP is given by - 4n+15 . find first 20 terms of these AP.

Posted by ????? ❤️ 7 years, 3 months ago

CBSE > Class 10 > Mathematics

6 answers

????? ❤️ 7 years, 3 months ago

Ek or question h

????? ❤️ 7 years, 3 months ago

Thnks kabir ji

Gurjar Kabir (बैंसला) 7 years, 3 months ago

Sorry first 20 terms are 11,7,3,-1,-5,-9,-13,-17,-21,-25,-29,-33,-37,-41, -45,-49,-53,-57,-61,-65...

Gurjar Kabir (बैंसला) 7 years, 3 months ago

Put n=1,2,3 In -4n+15 A1 = -4*1+15 =11 A2. =-4*2+15=7. A3 =-4*3+15 =3. D= A2 - A1 D= 7 -11 =-4 A20. = A1 + 19D = 11+(19*-4) = 11-76 -65....

????? ❤️ 7 years, 3 months ago

Solution pls

Gurjar Kabir (बैंसला) 7 years, 3 months ago

-65....

ANSWER

Any one help me to prepare chapter A. P.......

Posted by Gurjar Kabir (बैंसला) 7 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Anushka Jugran ? 7 years, 3 months ago

Don't worry jitna jyada questions solve karoge utne hi expert hote jaoge

Vansh Sehgal 7 years, 3 months ago

You can tell if u have problem in any question or any querie

Vansh Sehgal 7 years, 3 months ago

Ya tell the question

Anushka Jugran ? 7 years, 3 months ago

Just try to understand the questions first... Read it atleast two times and then answer it. Also learn all the formulae of this chapter

ANSWER

The angle of elevation of the top Q of a vertical tower PQ from a point X on the ground is 60°. At a point Y, 40m vertically above X, the angle of elevation is 45°. Find the height of the tower PQ and the distance XQ.

Posted by Shwet Choudhary 7 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Riya ? 7 years, 3 months ago

use tan theta

Riya ? 7 years, 3 months ago

use Tan theta ?

Riya ? 7 years, 3 months ago

use Tan theta.?

ANSWER

Find the zeros of the polynomial x square - 4 x + 4

Posted by Atul Bharti 7 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Dad'S Angel? 7 years, 3 months ago

DHAMA bhi gujjar hote hai .... Kabir bro??

Riya ? 7 years, 3 months ago

zeroes are 2 and 2.

Dad'S Angel? 7 years, 3 months ago

Zeroes r 2,2 ☺☺

. . 7 years, 3 months ago

2,2

ANSWER

The mean of the following frequency distribution is 132 and the sum of observation is 50.Find the missing frequency f1 and f2

Posted by Mehak Vishwakarma 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Is that 2+x=0 x=-2 ?????? Why?

Posted by Anikait Garg 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Rishi Shukla 7 years, 3 months ago

2+×=0 so ×=-2

ANSWER

Why the number on side of equal to go to other side by changing its sign

Posted by Anikait Garg 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the number of points where graph of the polynomial f(x)=x^3-2x^2+x, meets the x-axis.

Posted by Kirti Tank 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Is RD sharma book important for board exam? Which book for maths do you prefer guys for board examination?

Posted by Anjali Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

7 answers

Neha Choudhary 7 years, 3 months ago

First NCERT then RD

Anjali Singh 7 years, 3 months ago

Ya you are right Jasline K

Jasline S.? 7 years, 3 months ago

You know mai ncert karti hu but it doesn't help me because paper muskil hi lagta h . So I think sample paper are good for preparation. Mujhe to ncert book rat gayi h revise kr kr k.

Puja Sahoo? 7 years, 3 months ago

Ncert......... first complete it

| | | {R J } .....! ! !: ; 7 years, 3 months ago

NCERT

Anushka Jugran ? 7 years, 3 months ago

I prefer ncert exampler and arihant sample paper is also important.

Jasline S.? 7 years, 3 months ago

I an using " u like "

ANSWER

22+79+76+75-72+65+34

Posted by Om Pol 7 years, 3 months ago

CBSE > Class 10 > Mathematics

7 answers

Dad'S Angel? 7 years, 3 months ago

Right answer is 423

Jasline S.? 7 years, 3 months ago

Neha is right

Jasline S.? 7 years, 3 months ago

No no no no 276

Jasline S.? 7 years, 3 months ago

Is 579

Avanish Yadav 7 years, 3 months ago

423

Avanish Yadav 7 years, 3 months ago

galat ans

Neha Choudhary 7 years, 3 months ago

279

ANSWER

cross multiplication

Posted by Ankush Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

144 cartons of coke cans and 90 cartons of pepsi cans are to be stacked in a cantern . If each stack is of the same height and is to contain cartons of the same drink,what would be the greatest number of cartons each stack would have?

Posted by Deepika Pansotra 6 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 9 months ago

The greatest number of cartons is the HCF of 144 and 90
Now the prime factorization of 144 and 90 are
{tex}144=16×9=2^4{/tex} {tex}\times{/tex} 3^{2.{tex}{/tex}}
{tex}90=2\times3\times3\times5=2\times3^2\times5{/tex}
HCF (144,90)= 2 {tex}\times{/tex} 3² = 18
{tex}\therefore{/tex} The greatest number of cartons each stack would have= 18.

ANSWER

The cone of maximum size is carved out from a cube of edge 14 cm. Find the surface area of the remaining solid after the cone is carved out

Posted by Rohit Shishodia 5 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Avanish Yadav 7 years, 3 months ago

Avanish Yadav 7 years, 3 months ago

Avanish Yadav 7 years, 3 months ago

3Thank You

ANSWER

Hiiiiii friends

Posted by Twinkle Star ( Atul )....... ?? 7 years, 3 months ago

CBSE > Class 10 > Mathematics

6 answers

Aradhana Singh 7 years, 3 months ago

Hlw how are yu friends

Anushka Jugran ? 7 years, 3 months ago

Hii

Pihu Saini 7 years, 3 months ago

Kaha s hoo

Yaar 7 years, 3 months ago

Hii bhai

Twinkle Star ( Atul )....... ?? 7 years, 3 months ago

Pihu Saini 7 years, 3 months ago

Hii

ANSWER

Find the distance between origin and a point p(x,y)

Posted by Harpreet Chahal 7 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Puja Sahoo? 7 years, 3 months ago

x square + y square whole root over. As coordinate of origin Q(0,0). Put the distance formula

. . 7 years, 3 months ago

Root xsq.+ysq.

Susmita Mandal 7 years, 3 months ago

√x^2+y^2

ANSWER

If (1,p-

Posted by Shivya Chaudhry 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Lionel Messi⚽️ 7 years, 3 months ago

What is it question man

Puja Sahoo? 7 years, 3 months ago

Complete your question .....

ANSWER

CosA/1-tanA+sinA/1-cotA=sinA+cosA

Posted by Manoj Singh 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yaar 7 years, 3 months ago

LHS =cosA/(1-tanA)+sinA/(1-cotA) =cos A/(1 - sin A/cos A) + sin A/(1 - cos A/sin A) =cos²A/ (cos A - sin A) + sin²A / (sin A - cos A) =cos²A/ (cos A - sin A) - sin²A / (cos A - sin A) =(cos ² A - sin ² A) / (cos A - sin A) =(cos A - sin A)(cos A + sin A) / (cos A - sin A) =cos A + sin A i.e RHS Read more on Brainly.in - https://brainly.in/question/1346932#readmore

ANSWER

In the figure PQR is a tangent to the circle at Q whose centre is O and AB is a chord parallel to PR such that BQR = 70 then AQB= ?

Posted by Fehmina Tabassum 6 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 9 months ago

Given,

AB II PR
{tex}\angle{/tex}B = {tex}\angle{/tex}Q [Alternate interior angles]
{tex}\angle{/tex}B = 70^o
{tex}\triangle{/tex}AQB is an Isosceles triangle,
AQ = BQ
So, {tex}\angle{/tex}BQR = {tex}\angle{/tex}BAQ
{tex}\angle{/tex}A = 70^o
In {tex}\triangle{/tex}AQB,
{tex}\angle{/tex}QAB+ {tex}\angle{/tex}ABQ + {tex}\angle{/tex}BQA = 180^o
{tex}\Rightarrow{/tex} {tex}70° + 70° +{/tex} {tex}\angle{/tex}{tex}Q = 180^o{/tex}
{tex}\Rightarrow{/tex} {tex}\angle{/tex}B{tex}QA = 180^o - 140^o = 40^o{/tex}

ANSWER

If Mth term of an A.P. is 1÷n and the nth term is 1÷m then find the sum of its first mn term

Posted by Yashika Goyal 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Gaurav Seth 7 years, 3 months ago

Let a and d be the first term and common difference respectively of the given AP,then

mth term = a+(m-1)d ==> a+(m-1)d = 1/n -----(1)

and nth term=a+(n-1)d ==> a+(n-1)d = 1/m -----(2)

subtracting (2) from (1), we have

Let the first term of the A.P be 'a ' and its common difference be 'd '

Now, mth term of the A.P is 1/n

which means, a + (m - 1)d = 1/n --- (i)

Again,

its nth term is 1/m

which means, a + (n - 1)d = 1/m --- (ii)

on substracting eqn. (ii) from (i) we get,

a + (m - 1)d - a - (n - 1)d = 1/n - 1/m

=> d (m - 1 - n + 1) = (m - n)/mn

=> d (m - n) = (m - n) / mn

=> d = 1/mn

so, a = 1/m - (n - 1)(1/mn) = n - n + 1 / mn =1/mn

ie., a = d = 1/mn

Now, Smn = mn/2 [2a + (mn - 1)d]

= mn/2 [2/mn + (mn - 1)1/mn]

= mn/2 [2 + mn - 1]/mn

= (mn + 1)/2

. . 7 years, 3 months ago

mn+1by2

ANSWER

A well having 3.5m diameter and 20m deep is to be dug in a rectangular field 20m by 14m. The earth taken out of it has been spread evenly all round the well to the width of 2m to form an embankment ,find the height of the embankment

Posted by Aa Bisht 6 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 9 months ago

Radius of well {tex} = \frac{7}{4}m{/tex}
Depth of well = 20m
{tex}\therefore {/tex} Volume of earth taken out {tex} = \frac{{22}}{7} \times \frac{7}{4} \times \frac{7}{4} \times 20c{m^3} = \frac{{385}}{2}{m^3}{/tex}
Area of field {tex} = 20m \times 14m = 280{m^2}{/tex}
Area of field excluding well {tex} = \left( {280 - \frac{{22}}{7} \times \frac{7}{4} \times \frac{7}{4}} \right){m^2} = \frac{{2163}}{8}{m^2}{/tex}
{tex}\therefore {/tex} Level of earth raised {tex} = \frac{{volume\;of\;earth\;taken\;out}}{{Area\;of\;field}}{/tex}
{tex} = \frac{{385}}{2} \times \frac{8}{{2163}}m = 0.7119m{/tex}
= 71.19 cm

ANSWER

If cosec thita + cot thita = p prove that cos thita = p^2-1/p^2+1

Posted by Aa Bisht 7 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In an AP:[an] if common difference is 3 find a37-a15

Posted by Aa Bisht 7 years, 3 months ago

CBSE > Class 10 > Mathematics

6 answers

. . 7 years, 3 months ago

Most most most most most wlcm

Anushka Jugran ? 7 years, 3 months ago

Most wlcm neha

Aa Bisht 7 years, 3 months ago

Thanks to all

Anushka Jugran ? 7 years, 3 months ago

Chētnà Pandey✌️ 7 years, 3 months ago

Yes 66 is correct answer ....... Just make equation like a37= a+36d and then solve accordingly but I solved it the answer is 66

. . 7 years, 3 months ago

ANSWER

A card is drawn from a well shuffled pack of 52 cards. Find the probability of getting a red queen or a heart

Posted by Aa Bisht 7 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Riya ? 7 years, 3 months ago

in a pack of card there is only 2 red queen so the probability of getting a red queen =2/52 =1/26 Ans and probability of getting heart :- total number of heart in a card =13 so, P (heart)= favorable outcomes /total outcomes =13/52 =1/4 Ans

Chētnà Pandey✌️ 7 years, 3 months ago

Your welcome @Neha Bisht

Aa Bisht 7 years, 3 months ago

Thanks chetna

Vishakha Singh? 7 years, 3 months ago

14/52 i.e. 7/26