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

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1Thank You

Nidhi Srivastava 1 year, 1 month ago

1/xy

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ANSWER

sin 2A= 2 sin A is true when A =

Posted by Rafe Arshad 1 year, 1 month ago

CBSE > Class 10 > Mathematics

5 answers

Muskan Negi 1 year, 1 month ago

0°

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Angel Dixit 1 year, 1 month ago

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Dhruvi Maheshwari 1 year, 1 month ago

0°

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Tanya Singh 1 year, 1 month ago

0°

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Tharani Dharan 1 year, 1 month ago

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The value of c for which the equation axsqare + 2bx+c has equal roots

Posted by Priya Nagar 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Himanshi Surana 1 year, 1 month ago

B^2/A

1Thank You

ANSWER

The comman difference of the AP whose Sn=3n2 +7n is

Posted by Shashi Kant Jena 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Shreya Singh 1 year, 1 month ago

0Thank You

ANSWER

546 ke formula

Posted by Rudra Kushwah 1 year, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the two zeroes of polynomial 5x۸-7x+k are reciprocal to each other find the value of k.

Posted by Mohammad Shahid 1 year, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 1 month ago

K=5

2Thank You

M Charith 1 year, 1 month ago

a and b are zeroes

1Thank You

ANSWER

Find the value of ' a 'so that the following linear equations have no solution (3a + 1) * x + 3y - 2 = 0 , (alpha ^ 2 + 1) * x + (alpha - 2) * y - 5 = 0

Posted by Aditya Soni 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Sameer 🤭 1 year, 1 month ago

Answer here

2Thank You

ANSWER

What is the common difference of an ap in which a21 - a7=84

Posted by Nayan Gaur 1 year, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 1 month ago

d=6

0Thank You

Suraj Soni 1 year, 1 month ago

a21=a+20d a7=a+6d a21-a7=a+20d-a-6d a21-a7=14d Given that a21-a7=84 14d=84 Hence,d=6(answer)

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ANSWER

Is -150 a term of the AP 11, 8, 5 , 2,...?

Posted by Tulika Gupta 1 year, 1 month ago

CBSE > Class 10 > Mathematics

5 answers

Savitha Murugan 1 year, 1 month ago

0Thank You

M Charith 1 year, 1 month ago

No it is not a term

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Nihal Bendi 1 year, 1 month ago

a=11 D=8-11= -3 an = -150 an=a + (n-1)d -150 = 11+ (n-1)-3 -150= 11-3n+3 -150 = 14 -3n -150 -14 = -3n -164 = -3n n = -164/-3 n =54.6... So ,-150 is not a term of the given AP. ........Harika

0Thank You

Nayan Gaur 1 year, 1 month ago

-52=n So,-150 is not a term of A.P.

1Thank You

Shameer Thadayil 1 year, 1 month ago

X_{n ^{= a +(n-1)d}}

_{^{-150=11+(n-1)×-3}}

_{^{-150-11=(n-1)×-3}}

_{^{-161= (n-1)×-3}}

_{^{-161÷-3=(n-1)}}

_^-53.6=(n-1)

_{^{n=54.6,it is not positive intiger, so -150 is not a term if these sequence}}

1Thank You

ANSWER

Find the sum: (5x + 4 - 2y) + (2y - 7 + 3x)

Posted by Devansh Pareta 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Sanya Sharma 1 year, 1 month ago

8x-3

2Thank You

ANSWER

Solve 3x + 4y =10 and 2x - 2y = 2

Posted by Manya N 1 year, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Amarjit Yadav 1 year, 1 month ago

3x+4y=10----(1) 2x-2y=2------(2) Now multiplying by 2 in equation (2) 3x+4y=10------(3) 4x-4y=4--------(4) Solve equation 3 and 4 7x=14 X=2 Now putting the value of x in equation 1 3(2)+4y=10 6+4y=10 -4y=10-6 -4y=4 Y= 1

1Thank You

Arjun Sharma 1 year, 1 month ago

3x + 4y = 10 -----(1) 2x-2y = 2 --------(2) Multiply (2) equation with 2 4x - 4y = 4 -------(3) Add 3 and 1 3x + 4y = 10 4x - 4y = 4 ----------------------- 7x = 14 X = 2 Similarly Y=1

0Thank You

Kartik Bisht 1 year, 1 month ago

X=2,y=1

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ANSWER

The angle of elevation of the top of the tower from a point c on the ground , which is 30m away from the foot of the tower is 30°.find the height of the tower

Posted by Lilly Verma 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

M Charith 1 year, 1 month ago

10_/3

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ANSWER

If the polynomial 4x²k+2x+3 has equal and real roots then find the value of k

Posted by Gunjan Lodhi 1 year, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Srushti Nagane 1 year, 1 month ago

K = 1/12

0Thank You

M Charith 1 year, 1 month ago

K=12

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Mayank Sharma 1 year, 1 month ago

D=b²-4ac=0 (2)²-4(2)(4k) =4-32k=0=8

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ANSWER

In a parallelogram ABCD are three vertices A(3,4) B(3,8). C(9,8) then find the fourth vertices.

Posted by Sharad Soni 1 year, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 1 month ago

9,4

1Thank You

Sharad Soni 1 year, 1 month ago

Fourth vertices is (9,4)

4Thank You

ANSWER

Check whether x3 - 3x2 + 5x = (x - 2)3 is quadratic equation or no

Posted by Afrin Khan 1 year, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Punit Singh 1 year, 1 month ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

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1Thank You

Punit Singh 1 year, 1 month ago

WELCOME

1Thank You

Punit Singh 1 year, 1 month ago

x3 - 3x2 + 5x = (x-2)3 x3 - 3x2 + 5x = x3 - 8 x3 - 3x2 + 5x - x3 = -8 - 3x2 + 5x - = -8 -3x2 + 5x + 8 = 0 ( both side multiply by minus ) 3x2 - 5x - 8 = 0 {this is a quadratic equation} : Yes

2Thank You

ANSWER

Ch 13

Posted by Sagar Kushwaha 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Sagar Kushwaha 1 year, 1 month ago

Q number 5

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ANSWER

If the quadratic equation px² + 3x + q = 0 has two roots -1 and -2 then the value of q-p

Posted by ****0779 1 year, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 1 month ago

0Thank You

Nitesh Pal 1 year, 1 month ago

2q+1

1Thank You

ANSWER

If tanθ = a/b, then the value of asinθ+bcosθ/asinθ-bcosθ is

Posted by ****0779 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Arshdeep Singh 1 year, 1 month ago

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ANSWER

If the nth term of an AP is given by a n=2n-1, then sum of its 15 terms is

Posted by ****0779 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Shiv Shankar Kumar 1 year, 1 month ago

Tn=2n-1 :T1=2×1-1=1 :T2=2×2-1=3 :common difference=d=T2-T1=3-1=2 Tn=a+(n-1)d :T1=a+(1-1)2=1 :a+0=1 :a=1 :Sn=n÷2[2a+(n-1)d] S15=15÷2[2×1+14×2] :=15÷2×30 =15×15=225

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If the zeroes of polynomial p(x) = 2x^2-7x+k are reciprocal of each other , then the value of K is (a) 1 (b) 2 (c) 3 (d) 4

Posted by ****0779 1 year, 1 month ago

CBSE > Class 10 > Mathematics