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CAN ANYONE EXPLAIN all the Arithmetic Progression Equations and also when do we have to put this equations

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Sita Shah 5 years, 2 months ago

Name Sita

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Pranali Solanke 5 years, 2 months ago

Arithmetic Progression (AP) is asequence of numbers in order in which the difference of any two consecutive numbers is a constant value. For example, the series of natural numbers: 1, 2, 3, 4, 5, 6,… is an AP, which has a common difference between two successive terms (say 1 and 2) equal to 1 (2 -1).

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When do we have to put Sn =n/2 (a+an)

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Simaran Nikam 5 years, 2 months ago

We put "Sn = n/2 ( a + an )" when we know the value of "an" (last term of an AP) to find the sum of "n" terms when we know the last term of an AP.

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Pranali Solanke 5 years, 2 months ago

Sorry I didn't know

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When do we put this equation Sn=n/2 ( 2a +(n-1)d) Not this an= a+(n-1)d

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Simaran Nikam 5 years, 2 months ago

We put "Sn= n/2 ( 2a+ ( n - 1 )d )" when we have to find sum of "n" terms of a given AP and we put "an = a + ( n - 1 )d" when we are finding the value of the "n"th term of a given AP.

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Find the roots of the equation X square + x minus b (p + 1) close is equal to zero

Posted by Vishal Sharma 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

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Find the roots of the equation X square + X - B (team + 1) close is equal to zero

Posted by Vishal Sharma 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Sita Shah 5 years, 2 months ago

Name Sita Kumari

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A copper wire, 3 mm in diameter is wound about a cylinder whose length is 12 cm and diameter 10 cm, so as to cover the curved surface of the cylinder. Find the length and mass of the wire, assuming the density of copper to be 8.88 g per cm cube

Posted by Sanika Walimbe 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Jega Shree 5 years, 2 months ago

Diameter of wire= 3mm Convert into cm then =0.3cm Length=12cm. Radius of cylinder=5cm No.of. Turns= length/diameter =12/0.3=90 Length of one turns=circumference. =2πr=2×3.14×5=31.4cm. Total length=31.4×40=1256 L=1256 Radius of wire=0.3/2=0.15cm Volume=πr^2h=πr^2L =(3.14×0.15×1256) cm^3 =88.7364 cm^3 Mass=88.74×8.88=788.01. ----------×----------- Here (^) is power for example Cm^2 is cm power 2

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will the decimal representation of of 42/26250 terminate ? if it is so write in decimal form and write after how many places of decimals it terminates

Posted by Bhavya Kripa 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In an AP the first term is - 18 and 10th term is 0 find the common difference is of AP also write the first three terms of an Ap In this instead of an=0 why we write it as a10 =0 Also n=10 Can anyone explain the answer of this question

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Riya Philip 5 years, 2 months ago

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Arshika ✨ 5 years, 2 months ago

Because n is given 10 already...they says the 10th term is 0 so we will take a10=0..

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IS n and an same?

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

4 answers

Yangzee Sherpa 5 years, 2 months ago

?No?

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Raghav Gulati 5 years, 2 months ago

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Riya Philip 5 years, 2 months ago

nope

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Paridhi Sankhla 5 years, 2 months ago

No they are not same n is the number of terms whereas an is the last term of an AP

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Find the 15th term of an Ap 12, 15, 18 etc a=12 d=15-12=3 n = 15 in this why we put n= 15? Also an =a15 why..... explain

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Arshika ✨ 5 years, 2 months ago

n is the number of terms here and 15 is the number of terms... (an is last term here n is number of terms).

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Find the 15th term of an Ap 12, 15, 18 etc a=12 d=15-12=3 n = 15 in this why we put n= 15?

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Paridhi Sankhla 5 years, 2 months ago

We put n = 15 because the formula is a+(n-1)*d and here n refers to the No. Of terms

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What is natural number, Consecutive, integers

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Divya Rajesh 5 years, 2 months ago

Natural no starts from 1 and goes on like 1,2,3.... Consecutive: next or continuous no for example 2,3,4 are consecutive after 1 Integers: negative and positive no

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Solve the question 5 whole root 3/x +7whole root x/3 =22 2/3

Posted by Aditi Sharma 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Siddharth Chauhan 5 years, 2 months ago

Sec theta

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a two digit number is such that the product of the digits is 12 and 36 is added to the number the digit interchange their place formulate the quadratic equation whose roots is a digit of the number.

Posted by Rupesh Kumar Mahato 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Arshika ✨ 5 years, 2 months ago

Let the no.be m and n ATQ: m*n=12_____(1) 10m+n=10n+m+36 9m-9n=36 m-n=4_____(2) m=4+n [By putting value of m in first eq] (4+n)n=12 n^2+4n-12=0 n=2,-6 m=6,-2

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Riya Philip 5 years, 2 months ago

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If sin theta = c / under root c square + d square , where d > 0 then find the value of cos theta and tan theta

Posted by Priya Singh 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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The internal bisector of an angle of a triangle divides the opposite side internally in the ratio of the sides containing the angle.

Posted by Harsh Gupta 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 2 months ago

The internal (external) bisector of an angle of a triangle divides the opposite side internally (externally) in the ratio of the corresponding sides containing the angle.

Case (i) (Internally) :

Given : In ΔABC, AD is the internal bisector of ∠BAC which meets BC at D.

To prove : BD/DC = AB/AC

Construction : Draw CE ∥ DA to meet BA produced at E.

Proof (Internally) :

Because CE ∥ DA and AC is the transversal, we have

∠DAC = ∠ACE (alternate angles) -----(1)

and

∠BAD = ∠AEC (corresponding angles) -----(2)

Because AD is the angle bisector of ∠A,

∠BAD = ∠DAC -----(3)

From (1), (2) and (3), we have

∠ACE = ∠AEC

Thus in ΔACE, we have

AE = AC

(Sides opposite to equal angles are equal)

Now, in ΔBCE we have, CE ∥ DA.

By Thales Theorem,

BD/DC = BA/AE

Because AE = AC,

BD/DC = AB/AC

Hence the theorem.

Case (i) (Externally) :

Given : In ΔABC, AD is the external bisector of ∠BAC and intersects BC produced at D.

To prove : BD/DC = AB/AC

Construction : Draw CE ∥ DA meeting AB at E.

Proof (Externally) :

Because CE ∥ DA and AC is a transversal, we have

∠ECA = ∠CAD (alternate angles) -----(1)

Also, CE ∥ DA and BP is a transversal, we have

∠CEA = ∠DAP (corresponding angles) -----(2)

But AD is the bisector of ∠CAP,

∠CAD = ∠DAP -----(3)

From (1), (2) and (3), we have

∠CEA = ∠ECA

(Sides opposite to equal angles are equal)

In ΔBDA, we have EC ∥ AD.

By Thales Theorem,

BD/DC = BA/AE

Because AE = AC,

BD/DC = BA/AC

Hence the theorem.

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A vertical pole of length 6m casts a shadow 4m long on the ground and at the same time a tower casts a shadow 28m long. Find the height of the tower.

Posted by Harsh Gupta 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Sanika Walimbe 5 years, 2 months ago

42 cm

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What is the zeros of x square - 2 X + 8

Posted by Kritik Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Paridhi Sankhla 5 years, 2 months ago

Please check the equation again.

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Riya Philip 5 years, 2 months ago

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Taran Sagar 5 years, 2 months ago

Foxixzuuzxfi

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In Arithmetic Progression What is d, an, a ?

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Shrawani Kadam 5 years, 2 months ago

D" is common difference, "a" is first term and "an" is last term.

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Harsh Gupta 5 years, 2 months ago

"D" is common difference, "a" is first term and "an" is last term.

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Riya Philip 5 years, 2 months ago

"d" is common difference, "a" is the first term of A.P.,"an" is the general term.

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What is an?

Posted by Vishnupriya Ravi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Harsh Gupta 5 years, 2 months ago

"An" is a last term

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Riya Philip 5 years, 2 months ago

Hlo......join betternation.xyz this is a site where u can have a lot of friends and fun ? ? ?

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Gaurav Mishra 5 years, 2 months ago

Hii

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If a pair of linear equations is consistent then the line will be

Posted by Suraj Kumar Vaishya 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Dhruv Singhal 5 years, 2 months ago

Infinite many solution or unique solution

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Riya Philip 5 years, 2 months ago

Intersecting or coincident .

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Suraj Kumar Vaishya 5 years, 2 months ago

Intersecting or coincident

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If mean 54 find the value of p Class 0-20 20-40 40-60 60-80 80-100 Frequency 7 p 10 9 13

Posted by Harsh Pardhan 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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Question no 4 of ex 14.2

Posted by Mehwish Al Mubarak 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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According to ch7 coordinate geometry ,if we are given to to tell that something is rectangle but it all sides are equal and also diagonals are equal so can we consider it as rectangle

Posted by Disha Agarwal 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Riya Philip 5 years, 2 months ago

Join betternation.xyz This is a site where u can have a lot of friends and fun ? ? ?

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ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years, 2 months ago

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Maths kis na bani thi

Posted by Kashish Lakra 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Yangzee Sherpa 5 years, 2 months ago

??Maine??

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Versha Kawaliya 5 years, 2 months ago

✌️ correct question

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Riya Philip 5 years, 2 months ago

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In coordinate geometry there is the formula given for area of triangle:-- 1/2 [x1 (y2-y3) + x2 (y3-y1) + x3 (y1-y2)................so can we write like this 1/2 [x1 (y1-y2) + x2 (y3-y1) + x3 (y1-y2) ]. ??

Posted by Khushi Gangwani 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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The angle of evolution

Posted by Suhani Khapra 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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a sphere of maximum volume is cut out from a solid hemisphere of radius 6cm . find the volume of cut out sphere

Posted by Gungun Thakur 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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Chapter 8 8.1

Posted by Kapil Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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Prove root3 as. irrational no.

Posted by Amar M 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 2 months ago

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