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

Here 225 > 135 we always divide greater number with smaller one.
Divide 225 by 135 we get 1 quotient and 90 as remainder so that
225= 135*1 + 90
Divide 135 by 90 we get 1 quotient and 45 as remainder so that
135= 90*1 + 45
Divide 90 by 45 we get 2 quotient and no remainder so we can write it as
90 = 2*45+ 0
As there are no remainder so deviser 45 is our HCF

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Bahubali Gaming 6 years, 10 months ago

HCF= 5

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ANSWER

If the polynomial 6x4 + 8x3 + 5x2 + ax + b is exactly divisible by the polynomial 2x2 -5, the find the values of a and b.

Posted by Jayendra Mandal 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Bahubali Gaming 6 years, 10 months ago

A=20 & b=-25 or +25

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Fundamental theoram of arithmetic?

Posted by Sabrina Spellman 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Jiya Arora????? 6 years, 10 months ago

Every composite no. can be expressed as a product of primes, and this factorisation is unique, apart from the order in which the prime factors occur Theorem 1.2 pg8 ncert

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Puja Sahoo? 6 years, 10 months ago

Let a and b be the two integers then.......... hcf(a,b) × lcm(a,b) = a×b......

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Prove that root 5 is an irrational .Also show that 3 root 5 is an irrational

Posted by Aman Yadav 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhavya Jain 6 years, 10 months ago

3√5=p/q √5=p/3q :.√5 is irrational :.Contradiction :.3√5 is irrational

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ANSWER

If acos theta +bsin theta = c, then prove that asin theta - bcos theta = +- √ a square +b square - c square?

Posted by Pragati Jadav 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Pragati Jadav 6 years, 10 months ago

Thank you for helping me.

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Ramesh Singh 6 years, 10 months ago

Jo dusra equation hai usme c ki value dalo aa jayega its so easy

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Pragati Jadav 6 years, 10 months ago

Solve kaise hoga

1Thank You

Abinash Bir 6 years, 10 months ago

Very easy

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ANSWER

Consttruct a more than comulative frequency distribution table ci 50-60 60-70

Posted by Rashid Ali 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Pragati Jadav 6 years, 10 months ago

Aur hoga ti sirf ye banega, more than 50 ,more than 60 and so on..

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Puja Sahoo? 6 years, 10 months ago

How to construct here......???

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Important topics as per latest cbse syllabus

Posted by Aman Bhardwaj 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Prove that the length of two tangents drawn from an external point to a circle are equal

Posted by Aditya Patel 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Harish Chawda 6 years, 10 months ago

Given = QP and PR are the external tangent Prove = QP = PR Construction = joint OP , OR &OQ proof = ?POQ & ?OPR OQ =OR (radii) OP =OP (common) angle Q = angle R (90) ?POQ congruant ?OPR (R.H.S) PQ = OR (C.P.C.T ) THEOREM 10.2 (very IMP)

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Jiya Arora????? 6 years, 10 months ago

It's theorem 10.2 in ncert

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how many terms of Ap 9,17,25 must be taken to give a sum of 636?

Posted by Ayush Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Shivani Rawat 6 years, 10 months ago

n=12

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Bahubali Gaming 6 years, 10 months ago

4n square +5n-636 Split this

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ANSWER

(A+b+c) ×2

Posted by Aniket Kumar 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Anashuman Singh 6 years, 10 months ago

2a + 2b + 2c

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ANSWER

2x+3y=8 4x+6y=7 solve by elimenation and subtitution

Posted by Veer Patel? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

Let 2x + 3y = 8 be eq(i) and 4x + 6y = 7 be eq(ii).

Now, From eq(i),
2x + 3y = 8
2x = 8 - 3y
x = (8 - 3y)/2

Putting the Value of x in eq(ii),

4x + 6y = 7
4(8 - 3y)/2 + 6y = 7
2(8 - 3y) + 6y = 7
16 - 6y + 6y = 7
16 = 7
16 - 7 = 0
9 = 0

That is not true.

From the Calculations, We can see that the Equations has no solution.

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ANSWER

The first term of an Ap is P and its cmn difference is Q .find its 10 th term..??

Posted by Ayush Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Pragati Jadav 6 years, 10 months ago

A=p ,d=q. A10= a+ n-1×d. A10= p+(10-1)×q. = A10= p+9q ans

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Garima Choudhary 6 years, 10 months ago

A10 = p+ (9)q . So the 10th term is p+9q

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ANSWER

Solv for x :1/x+1 +2/x+2=4/x+4

Posted by Vikas Meena 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Ramesh Singh 6 years, 10 months ago

2(1-√3) and 2(1+√3)

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Jiya Arora????? 6 years, 10 months ago

First take Lcm then cross multiply them u will get the answer

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Somil Modi 6 years, 10 months ago

Put X=-1,-2,-4

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ANSWER

For what value of p are 2p+1, 13 and 5p-3 three consecutive term of an Ap

Posted by Gaurav Pandey 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Anagha Krishna 6 years, 10 months ago

to find consecutive term of an Ap we have a formula (A+C)=2B here we have a=(2p+1) b=13 c=(5p-3) by applying this in the formula. a+c=2b 2p+1+5p-3=2×13 7p-2=26 7p=28 p=28/7 p=4 .. thetefore value of p is 4

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Bhavya Vardhan Jain 6 years, 10 months ago

Terms-2p+1,13,5p-3 13-2p-1=5p-3-13 12-2p=5p-16 12+16=5p+2p 28=7p p=4 Ans

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ANSWER

Which term of an Ap 21,18,15..........…..............is 0

Posted by Gaurav Pandey 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Bhavya Vardhan Jain 6 years, 10 months ago

21,18,15,............,n a=21 d=18-21 =-3 an=0 an=a+(n-1)d 0=21+(n-1)-3 -21=(n-1)-3 7=n-1 n=8 8th term of an Appointment is 0 .Ans

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Garima Choudhary 6 years, 10 months ago

An=0 apply the formula of an. a+(n-1)d =0. 21+(n-1) (--3) = 0. 21-3n +3 =0 . 24-3n =0 -3n =-24 . n= 8. So the 8th term of the ap will be 0.

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ANSWER

What are the possible values of remainder r when a positive integer a is divided by 3

Posted by Gaurav Pandey 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Sneha Singh?????? 6 years, 10 months ago

Possible values r will be 0, 1,2

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Bhavya Vardhan Jain 6 years, 10 months ago

Possible values of r is 0,1,2. Ans

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ANSWER

Find the discriminant of the equation 3x²-2x+1/3=0 hence find the nature of its root Find them they are real root?

Posted by Gaurav Pandey 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Bhavya Vardhan Jain 6 years, 10 months ago

F(x)=3x²-2x+1/3 D=b²-4ac =(-2)²-4(3)(1/3) =4-4 D=0 Hence roots are real and equal x=-b±√d/2a =2±√0/6 =2/6 =1/3 Hence roots are 1/3 and 1/3. Ans

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Garima Choudhary 6 years, 10 months ago

D= b^2 - 4ac when we will solve this equation by taking LCM it will be. 9x^2 -6x +1=0 D =(-6)^2 - 4(1)(9) D = 36—36 . D=0. So the above equation has equal and real roots

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The ratio of income of two person is 9:7 And the ratio of there expenditure is 4:3 if each of them saves rupees 200 per month find their monthly income?

Posted by Bhumika Rawat 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Ramesh Singh 6 years, 10 months ago

Rs800

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(1+ Cos A + tan A)(sin A-cos A )=

Posted by Ravindra Yadav 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the zeroes of x³+2x²+kx-18 . K= -9

Posted by Kiran Yadav 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Shivani Rawat 6 years, 10 months ago

X=-2, X=-3, X=3

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ANSWER

A motor boat can travel 30 km upstream and 28 km downstream in 7hours . It can travel 21km upstream and return in 5 hours . Find the speed of the boat in still water and the speed of the stream.

Posted by Sparshi Garg 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The factorisation of 3x²-15x+28

Posted by ?Kishor Joshi? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Abhay Modi 6 years, 10 months ago

L.C.M. of 3×28=74; 3 74 2 28 2 14 7 Therefore, 3x^2-15x+28 =>3x^2-12x-7x+28 =>3x(x-4)-7(x-4) =>(x-4)(3x-7) Then, (x-4)=0 and (3x-7)=0 Theefore, x=4 and x=7/3 Now,4 and 7/3 are the roots of the given equation 3x^2-15x+28

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Garima Choudhary 6 years, 10 months ago

If we find discriminant it will be( -111) which means that it does not have real roots

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Nidhi Chaudhary 6 years, 10 months ago

No real roots

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the card is drawn at random from a well shuffled Deck of 52 cards find probability in the neither and red card nor a queen

Posted by Manish Kumar 6 years, 10 months ago

CBSE > Class 10 > Mathematics