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

Yes,it is enough for 70/80. 10 marks depends on your knowledge,approach towards question,hardwork etc.Doing continuous hard work and you can score 80/80. All the best.??

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Rounak Anand 5 years, 5 months ago

Jo is saal exam diye h unse puchh ke btaiyega

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Ex 1.1 calss 10 4 th question

Posted by Mehraj Unnisa Begum 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Helper . 5 years, 5 months ago

Abhi 1.1 pe hi ho meri poori math हो gyi

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Prove that 3+2√5 is irrational number?

Posted by Dilip Kumar Shah 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Helper . 5 years, 5 months ago

Jindagi bhar first chapter par atke rehna

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Study Lover ?‍? ?‍? 5 years, 5 months ago

Let 3+2√5 be rational number. So,3+2√5=a/b(a and b are co-prime) A/q 3+2√5=a/b =>2√5=a/b-3 =>√5=(a-3b)/2b. a,b,3 and 2 are integers. So,(a-3b)/2b is rational. But,(a-3b)/2b=√5. (√5 is irrational). Hence, our assumption is wrong. So,3+2√5 is irrational... I hope this helps you.??

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Yogita Ingle 5 years, 5 months ago

3 + 2√5 = a/ b
2√5 =a/b -3
√5 =a-3b/2b
√5 is rational.
This contradicta the fact that √5 is irrational.
So our supposition is incorrect.

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How to solve the Completeing the square mathod

Posted by Nidhi Yadav 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Helper . 5 years, 5 months ago

Youtube kis kaam aayega

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If p, q r s are in ap then r -q is

Posted by Paarth Ahuja 5 years, 5 months ago

CBSE > Class 10 > Mathematics

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Deepa Kumari 5 years, 5 months ago

Common difference

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Study Lover ?‍? ?‍? 5 years, 5 months ago

Common difference

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Use euclid's division algorithm to find the hcf of 135and 225

Posted by Ritika Thakur 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Study Lover ?‍? ?‍? 5 years, 5 months ago

Step1-On dividing 225 by 135,we get 1as quotient and 90 as remainder. From Euclid lemma, 225=135×1+90 Step 2-On dividing 130 by 90 ,we get 1as quotient and 45 as remaider. From Euclid lemma, 130=90×1+45 Step3-On dividing 90 by 45,we get 2 as quotient and 0 as remainder. From Euclid lemma, 90=45×2+0 HCF(225,134)=45. I hope this helps you.??

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Solve for x and y. 152x-378y=-74 ; 378x+152y=-604

Posted by . . 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

. . 5 years, 4 months ago

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The circumference of a circle exceeds it's diameter by16.8 cm.find the circumference of the circle

Posted by Kajal Prajapati 5 years, 5 months ago

CBSE > Class 10 > Mathematics

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(x + 1) –x ² =0 has 1 1 real root 2 real root 4 real root

Posted by Revati Waghere 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Study Lover ?‍? ?‍? 5 years, 5 months ago

D=b^2-4ac=1^2-4(-1)(1)=1+4=5. D>0.Hence it has two real and unequal roots.

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Fatima Khatoon 5 years, 5 months ago

Class 10 ka questions1.1

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Revati Waghere 5 years, 5 months ago

2 real root

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If sum of first k terms of an AP is 2k^2-3k, then what is its second term?

Posted by Radhika Singh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Study Lover ?‍? ?‍? 5 years, 5 months ago

Sum of first k term=2k^2-3k Sum of first(k-1) term=2(k-1)^2-3(k-1) =>2(k^2+1-2k)-3k+3 =>2k^2+2-4k-3k+3 =>2k^2+5-7k.. K th term=2k^2-3k-2k^2-5+7k =>4k-5.. 2nd term of AP=4×2-5=3.

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Radhika Singh 5 years, 5 months ago

Please solve fast?

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If 5 tan thita =4 show that 5 sin thita - 3cos thita /5 sin thita +3cos thita = 1/6

Posted by ~ Manikshita ~ 5 years, 5 months ago

CBSE > Class 10 > Mathematics

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Have a doubt Ask me of maths chapter trigonometry

Posted by Manasvi Balakrishna 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Manasvi Balakrishna 5 years, 5 months ago

1+cos x/1-cos x Rationalise 1+cos x/1-cos x *1+cos x/1+cos x (1+cos x)^2/1^2-cos^2x (1/sin x+ cos x/sin x) (Cosec x+ cot x) =RHS

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Lucifer?? Morningstar?? 5 years, 5 months ago

Prove that 1+cos x/1-cos x=(cosec x+cot x)

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Finda point on the y-axis which is equidistant fromthe points A(6,5) andB(-4,3).

Posted by Kartik Saini 5 years, 5 months ago

CBSE > Class 10 > Mathematics

0 answers

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x^2+25x-600 factorisation?

Posted by Aastha Dhamija 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Lucifer?? Morningstar?? 5 years, 5 months ago

X²-15x+40x-600 => x(x-15)+40(x-15) => (x+40)(x-15) => x=-40 or 15.

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If Alpha and beta all the zeros of the polynomial. P(x)=x2 -(k-6)x +(2k+1) .find the value of k, if alpha + beta is equal to Alpha beta

Posted by Surbhi Golan 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Priyanka Sahoo 5 years, 5 months ago

p(x) = x² - (k - 6)x + (2k + 1) , alpha + beta = -b/a = -(k - 6) , alpha * beta = (2k + 1) , according to question , alpha + beta = alpha * beta , -(K - 6) = 2k + 1 = -k - 2k = 1 + 6 = -k = 7 = K = 7

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Exercise 4.3 question 1. 3rd part

Posted by ~Rashi ♥️♥️ 5 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

~Rashi ♥️♥️ 5 years, 5 months ago

Thanks ☺️☺️

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Pankaj Malik 5 years, 5 months ago

4x^ +4√3x +3 = 4x^ + 4√3x = -3 = 4x^/4 +4√3x/4 = -3/4 = X^ + √3x = -3/4 = X^ + √3x + 3/4 = -3/4+3/4 =X^+√3x+3/4 =0 = (X+√3/2)^=0 = (x+√3/2)(x+√3/2) = 0 If x+√3/2=0,then x=-√3/2 If x+√3/2=0,then x=-√3/2

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1+2+4×3÷1=3÷46=3666×5÷9+4456

Posted by Utkarsh Yadav 5 years, 5 months ago

CBSE > Class 10 > Mathematics

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a lampshade is in the form of a frustum of a cone open at both ends the radii of its ends are 16cm and 24cm and its height is 6cm find the cost of the paper used if one square metres cost rs. 0.70

Posted by Tanisha ?? 5 years, 5 months ago

CBSE > Class 10 > Mathematics

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What is a sector?

Posted by Rajveer Dingh 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Tanisha ?? 5 years, 5 months ago

Sector is an area bounded by two radius and an arc.

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How we give nameof similar triangle

Posted by Kanhaiya Sharma 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

꧁༒ Shaurya༻ 5 years, 5 months ago

What

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Express 140 as product of prime factors

Posted by G Rohit Grandhi 5 years, 5 months ago

CBSE > Class 10 > Mathematics

4 answers

Deepa Kumari 5 years, 5 months ago

2*2*5*7

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Aryan Pachouri 5 years, 5 months ago

2*2*5*7

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Study Lover ?‍? ?‍? 5 years, 5 months ago

2×2×5×7

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Disha Macwan 5 years, 5 months ago

7 into 2 into 5 into 2

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Why should we take only 2 solutions for parallel lines in a graph? Or can we take 3 solutions also? And how will we get to by seeing the equation whether it will form parallel lines or intersecting lines or coincident lines?

Posted by Samruddhi Br 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Tercy James 5 years, 5 months ago

We just need to get a line which can be possible with two solutions also. If a1=a2 and b1=b2 but c1 is not equal to c2 then the pair of linear equations in two variables will have no solution i.e., we'll get parallel lines.

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Deepa Kumari 5 years, 5 months ago

On seeing both equations we will find that both are multiple of one another. For example ,4x+ 3y =7and 8x+6y = 14

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Study Lover ?‍? ?‍? 5 years, 5 months ago

3 solutions can be taken. Let the given equation system be 1.ax+by+c=o 2.a'x+b'y+c'=0 If a/a' is not equal to b/b'. Then,lines intersect at one point. If a/a'=b/b'=c/c' Then,lines are parallel. If a/a'=b/b' €c/c'. {€=not equal} Then,lines don't intersect.

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To verify that given sequence is an airthmetic progession by paper cutting and pasteing

Posted by Kamakshi Bora 5 years, 5 months ago

CBSE > Class 10 > Mathematics