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

ANSWER ⇒ Let one number be x, then other number will be 9−x According to the question, ⇒ x1+9−x1=21 ⇒ x(9−x)9−x+x=21 ⇒ 9x−x29=21 ⇒ 2(9)=9x−x2 ⇒ 18−=9x−x2 ⇒ x2−9x+18=0 ⇒ x2−6x−3x+18=0 ⇒ x(x−6)−3(x−6)=0$ ⇒ (x−6)(x−3)=0 ⇒ x−6=0 and x−3=0 ∴ x=6 and x=3 ⇒ One number is 6 and other number is 3 ⇒ The sum of squares of the numbers =(6)2+(3)2=36+9=45

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In an equilateral triangle ABC,AD is perpendicular to BC and AD²=P.BC² then find value of p

Posted by Khanjan Kukadia 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Aditya Kumar 5 years, 2 months ago

Since AD is height so AD=(√3)a/2 And BC is side of equilateral triangle? so BC=a Now, AD²=p×BC² (√3a/2)² =p×a² 3a²/4 =p×a² P=3/4

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Aditya Kumar 5 years, 2 months ago

P=3/4

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ANSWER

A tower stand vertically

Posted by Diya Tamang 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Tapish Sharma 5 years, 2 months ago

Generate right angle

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ANSWER

Solve for x: x+1/x=5

Posted by Roushan Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Misthi Jain 5 years, 2 months ago

x+1/x =5 x+1=5×x x+1=5x 1=5x-x 4x=1 x=1/4

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Yogita Ingle 5 years, 2 months ago

x+1/x=5

(x²+ 1)/x = 5

x² + 1 = 5x

x² - 5x + 1 = 0

Then solve bu using formula method

x = - b ± √b² - 4ac/ 2a

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ANSWER

Is 0 a monomial?

Posted by Roushan Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Roushan Kumar 5 years, 2 months ago

How 0 can be a term! Because 2x can be written as 2x +0+0+0... to infinity ,but we don't say that it has infinite terms.

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Yogita Ingle 5 years, 2 months ago

An expression with only one term is called a monomial.

Ex: 2x, 5xy, -3p, 4y², -7, etc are called monomials.

So, 0 is a monomial.

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Find discriminant of given quadratic equation minus x square + 4 x + 5 equals to zero

Posted by Surender Mola 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

check whether the given pair of linear equation are 2 X + 2 y is equals to 5 and 3 X + 4 y = 6 are consistent or not

Posted by Surender Mola 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Shubham Saxena ???? 5 years, 2 months ago

A ≠ B ,, consistent..

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ANSWER

Find the rational number between 3 and 4

Posted by Surender Mola 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 2 months ago

Since we want six numbers, we write 1 and 2 as rational numbers with denominator 6 + 1 =7
So multiply in numerator and denominator by 7 we get

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Find distance between a (0,0)and b (2,5)

Posted by Surender Mola 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 2 months ago

Distance Between two given point=√(x₂−x₁)²+(y₂−y₁)²

Here x₁=0,x₂=2

and y₁=0,y₂=5

∴ Distance between the points (0,0) and (2,15)=√(2−0)²+(5−0)²

=√ 4+25

=√29

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Find (X + 2)( X + 1) = (X + 4 )(x + 3) is a quadratic equation

Posted by Surender Mola 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Shubham Saxena ???? 5 years, 2 months ago

(X+2)(x+1) = (x+4)(x+3) X(x+1)+2(x+1) = X(x+3)+4(x+3) X2 + x + 2x + 2 = X2 + 3x + 4x + 12 X2 + 3x + 2 = X2 + 7x + 12 X2 + 3x + 2 - X2 - 7x - 12 = 0 4x - 10 = 0 . Hence , It is not a quadratic equation.

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Yogita Ingle 5 years, 2 months ago

(X + 2)( X + 1) = (X + 4 )(x + 3)

x ( x + 1) + 2 ( x + 1) = x ( x+ 3) + 4 ( x+ 3)

x²+ x + 2x + 1 = x² + 3x + 4x + 12
x²+ 3x + 1 = x² + 7x + 12

3x + 1 = 7x + 12

7x - 3x = 1 - 12

4x = -11 is not a quadratic equation

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,find the degree of given quadratic equation of p x is equal to X square + y cube + x square y square + xy + y square

Posted by Surender Mola 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Mehak Bajaj 5 years, 2 months ago

Trinomial Explanation : Because the highest degree is cube ( y³) .

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Prove that one and Only one out of n,n+2 and n+4 is divisible by 3 ,where n is any positive integer

Posted by Avtar Singh 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the sum of first 8 terms of an AP is 50 and that of 17 terms is 289,find the sum of n terms

Posted by Rizwana Khatoon 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Mehak Bajaj 5 years, 2 months ago

In this question , you know that S8 = 8/2 ( 2a + (8-1)d ) You will get an equation from this and from S17 as well By combining these two equation by elimination or by any other method you will find d and after that you have to put the value of d in Sn = n/2 ( 2a + (n-1)d ) and at last you will get the answer ( the answer can also be a quadratic equation ) .

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2x) +5x=

Posted by Nihar Ranjan Hota 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Dibyajyoti Mishra 5 years, 2 months ago

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ANSWER

2/sintheta +costheta*sintheta

Posted by Bhumika Banga 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Is periodic test marks will be added in CBSE results according to revised syllabus?

Posted by Mahak Sadhya 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Dhanraj Sath 5 years, 2 months ago

A die is thrown once.Find the probability of getting 1. a prime number

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Anish Sharma 5 years, 2 months ago

Yes it is included

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In a triangle prove that the sum of two angle is greater than the third angle

Posted by Kashish Shaikh 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In the fig. AP||BQ||CR and AB=BC Prove that 1)BX=1/2AP and 2)AP+CR=2BQ

Posted by Yashraj Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Tell the three formulas of statistics

Posted by Yogesh Waran 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Ex. 1.1 question 2

Posted by Anshul Kumar 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Love Preet 5 years, 2 months ago

Available on the app..

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Olympiad

Posted by Harnam Kaur 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find all the zeroes of – 2, if it is given that two of its zeroes are . 2x − 3 − 3 + 6x [2] 4 x 3 x 2 2 and − – √ 2

Posted by Sarvesh Joshi 5 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Jaskirat Singh Matharu 5 years, 2 months ago

Ans 1

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Shivam Rathore 5 years, 2 months ago

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Find the point on x axis which is equidistant from (2, -5)and (-2,9)

Posted by Aryan Rao 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Bunty Verma 5 years, 2 months ago

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ANSWER

What is the prime number and composit numbers

Posted by Dhanraj Sath 5 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Dhanraj Sath 5 years, 2 months ago

Thank you

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Yogita Ingle 5 years, 2 months ago

Prime Numbers

A prime number is the one which has exactly two factors, which means, it can be divided by only “1” and itself. But “1” is not a prime number.

Example of Prime Number

3 is a prime number because 3 can be divided by only two number’s i.e. 1 and 3 itself.

3/1 = 3

3/3 = 1

In the same way, 2, 5, 7, 11, 13, 17 are prime numbers.

Composite Numbers

A composite number has more than two factors, which means apart from getting divided by number 1 and itself, it can also be divided by at least one integer or number. We don’t consider ‘1’ as a composite number.

Example of Composite Number

12 is a composite number because it can be divided by 1,2,3,4,6 and 12. So, the number ‘12’ has 6 factors.

12/1 = 12

12/2 =6

12/3 =4

12/4 =3

12/6 =2

12/12 =1

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Gudiya Naqvi 5 years, 2 months ago

Composit is jo 2 s jiyada 3 4 5 6 other number s divisible h that is composit number

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