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

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1Thank You

Nidhi Srivastava 1 year, 4 months ago

1/xy

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ANSWER

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

Posted by Rafe Arshad 1 year, 4 months ago

CBSE > Class 10 > Mathematics

5 answers

Muskan Negi 1 year, 4 months ago

0°

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Angel Dixit 1 year, 4 months ago

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Dhruvi Maheshwari 1 year, 4 months ago

0°

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Tanya Singh 1 year, 4 months ago

0°

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Tharani Dharan 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Himanshi Surana 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Shreya Singh 1 year, 4 months ago

0Thank You

ANSWER

546 ke formula

Posted by Rudra Kushwah 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 4 months ago

K=5

2Thank You

M Charith 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sameer 🤭 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 4 months ago

d=6

0Thank You

Suraj Soni 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

5 answers

Savitha Murugan 1 year, 4 months ago

0Thank You

M Charith 1 year, 4 months ago

No it is not a term

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Nihal Bendi 1 year, 4 months 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, 4 months ago

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

1Thank You

Shameer Thadayil 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sanya Sharma 1 year, 4 months ago

8x-3

2Thank You

ANSWER

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

Posted by Manya N 1 year, 4 months ago

CBSE > Class 10 > Mathematics

3 answers

Amarjit Yadav 1 year, 3 months 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, 4 months 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, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

M Charith 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

3 answers

Srushti Nagane 1 year, 4 months ago

K = 1/12

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M Charith 1 year, 4 months ago

K=12

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Account Deleted 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 4 months ago

9,4

1Thank You

Sharad Soni 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

3 answers

Punit Singh 1 year, 4 months 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.
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1Thank You

Punit Singh 1 year, 4 months ago

WELCOME

1Thank You

Punit Singh 1 year, 4 months 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

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ANSWER

Ch 13

Posted by Sagar Kushwaha 1 year, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sagar Kushwaha 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics

2 answers

M Charith 1 year, 4 months ago

0Thank You

Nitesh Pal 1 year, 4 months ago

2q+1

1Thank You

ANSWER

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

Posted by ****0779 1 year, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Arshdeep Singh 1 year, 4 months ago

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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, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Shiv Shankar Kumar 1 year, 4 months 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, 4 months ago

CBSE > Class 10 > Mathematics