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

Let, first term is A1=2×1+1 =3 Second term A2=2×3+1 =7 Now, D=A2 - A1 D=7 - 3 D= 4 Then, sum of first (n) terms Sn = n/2[2a+(n-1)d] Sn =n/2[2×3+(n-1)4] Sn=n/2[6+4n-4] Sn=n/2[2+4n] Sn=n ^2+n [Hence, Sn=n square +n]

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What is parabola?

Posted by The Innocent Boy ?? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

4 answers

Manya Mahajan 5 years, 5 months ago

Parabola is a graph like U shape . It can be on upward direction and downward.

2Thank You

The Innocent Boy ?? 5 years, 5 months ago

Ok thnks

1Thank You

Saurabh Tripathi 5 years, 5 months ago

In maths

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Saurabh Tripathi 5 years, 5 months ago

Parabola is a type of graph

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ANSWER

Prove. tanA+tanB÷cotA+cotB=tanAtanB

Posted by Saurabh Tripathi 5 years, 5 months ago

CBSE > Class 10 > Mathematics

4 answers

Saurabh Tripathi 5 years, 5 months ago

Can i give few more ques. In trigno..

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Saurabh Tripathi 5 years, 5 months ago

Thanks

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Saurabh Tripathi 5 years, 5 months ago

1Thank You

Sameeksha V H 5 years, 5 months ago

CotA=1/TanA and cotB=1/tanB TanA+TanB ÷(1/tanA+1/tanB) 1/tanA+1/TanB=tanA+tanB ÷tanAtanB While dividing tanA+tanB cancels and the answer is TanATanB

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ANSWER

explain iota

Posted by Aryan Kumar 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Tanisha Chhikara 5 years, 5 months ago

Iota is an imaginary number

1Thank You

Aryan Kumar 5 years, 5 months ago

iota represent imaginary number

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ANSWER

Basic math simple Peper

Posted by Gautam Panwar 5 years, 5 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What type of lines do the pair of equation x=c and y=c represent graphically

Posted by Sahil A Tripathi 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhavya Sharma 5 years, 5 months ago

The line x = c

This line is a vertical line passing through point (c, 0) on the graph

For example x = 3 is a vertical line drawn at the point (3, 0

The line y = c

This is a horizontal line passing through point (0, c)

For example y = 4 is a horizontal line drawn at point (0, 4)

Read more on Brainly.in - https://brainly.in/question/4053361#readmore

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5xsquare +24x -243

Posted by Ishwar Adv 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Ravinder Yadav 5 years, 5 months ago

it have no real root b Square -4ac = 4284

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Kajal Garg 5 years, 5 months ago

Answer

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ANSWER

Plz ans meme solve

Posted by Katha Shukla 5 years, 5 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

P(x)=3x2+x+2 G(x)=x-1

Posted by Katha Shukla 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Ujjawal Kumar 5 years, 5 months ago

There's two ways to solve but we use simple way so, Let, g(x) =0 Therefore X=1 Now,put in P(x) We get = 3+1+2=6 Hence answer is 6

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Ravinder Yadav 5 years, 5 months ago

Answer is 9

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Sanchana K 5 years, 5 months ago

P(x)=3x2+x+2 (1)=3(1)2+(1)+2 3+1+2 =6

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2, 7,12...... to 10term?

Posted by Aditi Mishra 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Tanisha ?? 5 years, 5 months ago

a¹⁰=a+(n-1)d a¹⁰=2+(10-1)5 a¹⁰=2+45 a¹⁰=47

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Bhavya Sharma 5 years, 5 months ago

S10 = a + (n -1) d = 2 + ( 10-1) 5

= 2 + 9 x5 = 2 + 45 = 47

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ANSWER

Find the sum and product of the roots of the quadratic equation given x2+7x+5=0.

Posted by Manjot Singh Jot Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Bad? Boy 5 years, 5 months ago

Sum of roots=7 and p.o.r=5

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ANSWER

Write the zeroes of polynomial x2+2x+1

Posted by Manjot Singh Jot Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

B.Aishwarya 203 Kalyannagar 5 years, 5 months ago

The zeroes of the polynomial are x=-1, -1.

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Ravinder Yadav 5 years, 5 months ago

Answer is -1

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ANSWER

solve: x/2 +2y/3 =11 and x-y/4 =3

Posted by Kulwinder Kaur 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Sameeksha V H 5 years, 5 months ago

First make two linear equations 3x+4y=66 take it as eq1 (solve that same as like fractions ) 3×x+2y×2/6=11 Next eq no2 4x-y=12 4×x-y×1/4=3 Solve the two eqs 3x+4y=66 and 4x-y=12 multiply 4 for 1st eq and add to balance coeffiecient of y So we get x=6 and y=12

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Given that HCF (3o6,657)=9 find lcm (306,657)

Posted by Biswajit Gudu 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Ravinder Yadav 5 years, 5 months ago

Answer is 22338

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Yash Lohchab 5 years, 5 months ago

LCM(306,657)= (306*657)/9 LCM= 657*39 LCM is 25623

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ANSWER

Find roots of √3x^-2x-√3

Posted by Tanisha Tanisha 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Ravinder Yadav 5 years, 5 months ago

X =-1/underroot 3 and x =underroot 3

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ANSWER

13. A rectangular courtyard is 18m72cm long and 13m20cm broad. It is to be paved with square tiles of the same size. Find the least possible number of such tiles.

Posted by Kunal Chandan 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 5 months ago

Length = 1872 cm

Width = 1320 cm

The edge of the square tile must be the common divisor of the dimensions of the courtyard.

So, maximum edge of square tile = HCF of 1872 and 1320 = 24 cm

So, required number of tiles = area of courtyard/ Area of square tile = 1872 x 1320/ (24)² = 4290

Thus, the least number of tiles required to cover the courtyard is 4290.

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ANSWER

Raghav bought 37/2m cloth for 1961/8 .sameer buys 55/2m same cloth. How much should samer pay the shopkeeper ?

Posted by Shivam Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find common difference of ap 1,-2, -5, -8

Posted by Abhishek Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Ravinder Yadav 5 years, 5 months ago

-3

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Dipesh Gupta 5 years, 5 months ago

As -2-(+1)=-3 & -8-(-5)=-3 Thus, common difference ,d=-3

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Dipesh Gupta 5 years, 5 months ago

common differnce , d = -3

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ANSWER

A man starts frm his house with some money to visit four temples. 1. As soon as he enters temple 1 his money gets doubled. He donates 100 rs nd moves. 2. At temple 2 again his money is doubled and he donates 100 rs. 3. His money is doubled again at temple 3 and he donates 100 rs. 4. At temple 4 again his money gets doubled. He donates 100 rs. again and returns home empty handed. How much money he had when he started from his house??? ❓❓❓❓❓❓❓

Posted by Anup Kumar Dutta 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Gaurav Seth 5 years, 5 months ago

Let the amount the man initially had be x

When he reached the first temple, the money doubled. So, the amount now is 2x.

He donates 100. So, balance amount = 2x – 100

This again doubles at 2nd temple. So, he has 2 (2x - 100) => 4x – 200

He gives 100. So, he has 4x – 200 – 100 = 4x – 300

Same process at Temple 3.

It doubles and he has 2(4x - 300) = 8x – 600

He gives 100. So, he has 8x – 700

Again doubling at Temple 4. Thus, he has 2(8x - 700) = 16x – 1400

He gives 100 and has nothing. Thus 16x – 1400 – 100 = 0

=> 16x – 1500 = 0

=> 16x = 1500

Therefore, x = 1500/16 = 93.75

Thus, he started from home with Rs.93.75

1Thank You

Anup Kumar Dutta 5 years, 5 months ago

ANSWER ???? Let the money be = x In temple 1 the money is doubled = 2(x) = 2x He donates rupees 100 in first temple. Then the money will be =2x - 100 In temple 2 the money is doubled = 2( 2x-100) = 4x-200 He donates rupees 100 in second temple = 4x -200-100 = 4X -300 In temple 3 the money is doubled = 2(4x-300) = 8x-600 He donates rupees 100 in third temple =8x-600-100 =8x-700 In temple 4 the money is doubled = 2(8x-700) =16X -1400 He donates rupees 100 in temple fourth =16X -1400-100 = 16X -1500 Therefore => 16X =1500 => X = 1500/16 => X = 93.75 (answer) ???????????????????

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If a is 4 and Sn is 40 then find d

Posted by Anushka Negi 5 years, 5 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

All formula, S of probability

Posted by Navneet Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Anish Sharma 5 years, 5 months ago

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ANSWER

for the following Arthemetic progression write the common difference 10,13,16,19

Posted by Ak18 Ak18 5 years, 5 months ago

CBSE > Class 10 > Mathematics

4 answers

Akshat Shah 5 years, 5 months ago

3 is common difference

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Avinash Kumar 5 years, 5 months ago

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Divyansh Agarwal 5 years, 5 months ago

3 is the common difference

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Debasish Mahapatra 5 years, 5 months ago

3 is the common difference

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ANSWER

Show the graphical representation

Posted by Anshika Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Angell Tripathi 5 years, 5 months ago

Please write properly ....

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#Sareef Balak 5 years, 5 months ago

Kis chej ki

1Thank You

ANSWER

Prove 5-√2 is irrational

Posted by Anushka Negi 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Arjun Kashyap 5 years, 5 months ago

It is a long process. Will tell you again sometime.

2Thank You

ANSWER

use euclid division lemma to show that the cube ofvany positive integer is of the form 9m,9m+1or9m+8

Posted by Yatish Murtadak 5 years, 5 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Prove that √p and √q is irrational if p and q are prime number

Posted by Sahil A Tripathi 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Abhishek Kumar 5 years, 5 months ago

Let us suppose that √p + √q is rational. Let √p + √q = a, where a is rational. => √q = a – √p Squaring on both sides, we get q = a2 + p - 2a√p => √p = (a2 + p - q)/2a, which is a contradiction as the right hand side is rational number, while√p is irrational. Hence, √p + √q is irrational. Read more on Brainly.in - https://brainly.in/question/2815918#readmore

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