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The LCM and HCF of two Numbers are 240 and 12 respectively. If one of the number is 60,then find the other number.

Posted by Navjot Singh 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Vansh Patidar 5 years ago

Take that number a and b so a = 60 b = ? LCM = 240 HCF = 12 according to mathematics law LCM × HCF = a × b Take that number a and b so a = 60 b = ? LCM = 240 HCF = 12 according to mathematics law LCM × HCF = a × b LCM × HCF/a = b 240 × 12 /60 = b 48 = b so the onother number is = b = 48 LCM × HCF/a = b 240 × 12 /60 = b 48 = b so the onother number is = b = 48

Gaurav Seth 5 years ago

Take that number a and b so
a = 60
b = ?
LCM = 240
HCF = 12

according to mathematics law

LCM × HCF = a × b

LCM × HCF/a = b

240 × 12 /60 = b

48 = b

so the onother number is = b = 48

ANSWER

Prove that root 5 is an irrational number

Posted by Anushka Singh 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years ago

Let us assume that √5 is a rational number.

Sp it t can be expressed in the form p/q where p,q are co-prime integers and q≠0
⇒√5=p/q

On squaring both the sides we get,
⇒5=p²/q²
⇒5q²=p² —————–(i)

p²/5= q²

So 5 divides p
p is a multiple of 5
⇒p=5m
⇒p²=25m² ————-(ii)
From equations (i) and (ii), we get,
5q²=25m²
⇒q²=5m²
⇒q² is a multiple of 5
⇒q is a multiple of 5
Hence, p,q have a common factor 5. This contradicts our assumption that they are co-primes. Therefore, p/q is not a rational number

√5 is an irrational number

ANSWER

In a right angled ?ABC, right angled at B, points D and E divides BC and BA in the ratio 2:1. Then prove that 9AD2+9CE2=13AC2

Posted by Shashank Agasagi 5 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

7x-2y/xy = 5 .....(i) 8x+7y/xy=15 ....(ii)

Posted by उत्सव राज 5 years ago

CBSE > Class 10 > Mathematics

1 answers

A K47 5 years ago

i)7x-2y/xy =5 =7x/xy - 2y/xy =5 =7/y - 2/x =5 ii)8x+7y/xy =15 =8x/xy+7y/xy=15 =8/y+7/x=15 Let 1/x=p and 1/y=q then by substituting these values we get, 7q-2p=5 and 8q+7p=15 By eliminating, q=1 and p=1; We know that 1/x=p and 1/y =q then by putting values of q and p we get x=1 and y =1.

ANSWER

Durry suther on five questions

Posted by Akash Deep 5 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is the speed of boat ? going down stream with the speed of 0km per hour and what is the distance of travel by the boat if it travel 0 km per hour in 0 hour If any body know the answer type his or her number in comment to get 5000₹ paytm reward the fastest scorer will get chance to meet RAMANUJAN

Posted by Raj Chauhan 5 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Use Euclid division algorithm to find the HCF of 900and 270

Posted by Veraiah Kesam 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years ago

Euclid's division lemma :

Let a and b be any two positive

integers .Then there exists two

unique whole numbers q and r

such that

a = bq + r ,

0 ≤ r < b

Now , 900 and 270 , start with the larger integer , that is 900. Apply the
Division lemma , we get
900 = 270 × 3 + 90
270 = 90 × 3 + 0
The remainder has now become zero . Now our procedure stops.
Since the divisor at this stage is 90.
Therefore ,
HCF ( 900 , 270 ) = 90

ANSWER

Mathematics chapter 3,4,5,6,7

Posted by Jayank Mishra 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Love Preet 5 years ago

Available on the app...

Daniya Khan 5 years ago

What mathematics chapter 3,4,5,6,7

ANSWER

Can I get the question paper of the year 2017

Posted by Nandini Soni 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Daniya Khan 5 years ago

Ya I also have same problem

Prianshu Kumar 5 years ago

Yes

ANSWER

11)Find the zeroes of the quadratic polynomial 3x^2 – 75 and verify the relationship between the zeroes and the coefficients.

Posted by Anish Koundinya 5 years ago

CBSE > Class 10 > Mathematics

2 answers

King?Adithya H. M.. 5 years ago

answer is -25

Gaurav Seth 5 years ago

ANSWER

If the sides of two similar triangles are in the ratio 4:9. Find the ratio of areas of these triangles.

Posted by Aman Kumar 5 years ago

CBSE > Class 10 > Mathematics

2 answers

King Adithya H M... 5 years ago

If two triangles are similar to each other, then the ratio of the areas of these triangles will be equal to the square of the ratio of the corresponding sides of these triangles. It is given that the sides are in the ratio 4:9. Hence, the correct answer is 16 : 81.

Gaurav Seth 5 years ago

If two triangles are similar to each other, then the ratio of the areas of these triangles will be equal to the square of the ratio of the corresponding sides of these triangles.

It is given that the sides are in the ratio 4:9.

Therefore, ratio between areas of these triangles = (4 / 9)²= 1681

Hence, the correct answer is 16 : 81.

ANSWER

Find the zeroes of the polynomial 6x²-7x-3 and verify the relationship between zeroes and coefficients of the polynomial

Posted by Janvi Rajput 5 years ago

CBSE > Class 10 > Mathematics

3 answers

King Adithya H M... 5 years ago

Let 6x2 - 7x- 3 be p(x) =0 so,6x2 - 7x-3 =0 6x2 - (9-2) x -3 6x2 - 9x + 2x -3 (6x2 - 9x)(2x-3) 3x(2x-3) +1 (2x-3) (3x +1) (2x -3) = 0 ⇒ 3x +1 = 0 ⇒ 2x -3 = 0 ⇒ x =3/2 ⇒ x = - 1/3 sum of zeroes = -1/3 + 3/2 =7/6 = -b/a product of zeroes =- 1/3 * 3/2 = - 3/6 or -1/2 = c/a

Archita Gupta 5 years ago

6x²- 7x-3 6x²+2x-9x-3 2x(3x+1)-3(3x+1) (2x-3) (3x+1) 2x-3=0 2x=3 X=3/2 3x+1=0 3x= -1 x=-1/3 Sum of zeroes =- coefficient x/coefficient of x² 3/2+(-1)/3=-(-7)/6 9-2/6 =7/6 7/6=7/6 Produce of zeroes = constant term / coefficient of x² 3/2×(-1)/3=(-3)/6 -3/6=-3/6

Gaurav Seth 5 years ago

Let 6x² - 7x- 3 be p(x) =0

so,6x²- 7x-3 =0

6x² - (9-2) x -3

6x²- 9x + 2x -3

(6x²- 9x)(2x-3)

3x(2x-3) +1 (2x-3)

(3x +1) (2x -3) = 0

⇒ 3x +1 = 0

⇒ 2x -3 = 0

⇒ x =3/2

⇒ x = - 1/3

sum of zeroes = -1/3 + 3/2 =7/6 = -b/a

product of zeroes =- 1/3 * 3/2 = - 3/6 or -1/2 = c/a

ANSWER

2+2=5 to prove

Posted by Dheeraj Kumar 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Shivdeep Singh 5 years ago

Let a=2 b=2 a=b a×a=ab a^a-b^b = ab-b^b (a+b)(a-b)=b(a-b) a+b =b(a-b)/(a-b) 2+2= 2

Sonu Kumar Rajbhar 5 years ago

If A,B and C are interior angles of a triangle ABC,then show that sin (B+C/2)=cos A/2

ANSWER

The ratio of circumference of a large wheel and a small wheel is 4:1. If the small wheel rotates 15 times more than the large wheel in travelling 440 m. Find the circumference of two wheels.

Posted by Shaswat Dehury 5 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

4x-4x2-16

Posted by Manish Angural 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Gautam Sinha 5 years ago

4x- 24

ANSWER

solve for x find k 3 is a solution of 3x + (k-3)x+9=0

Posted by Md Danish Siddiqui 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Mebanangtei Kshiar 5 years ago

Find the cubic of polynomial given number as zeroes

Yogita Ingle 5 years ago

If x = 3

then 3x + (k-3)x+9=0

3(3) +( k - 3)3 + 9 =0

9 + 3k - 9 + 9 =0

3k = -9

k =-9/3 = -3

ANSWER

Is there any topic which is fully deleted in construction chapter???

Posted by Akhya Sahay 5 years ago

CBSE > Class 10 > Mathematics

4 answers

Tiksha Gupta 5 years ago

Construction of similar triangle

Namrata Pandey 5 years ago

Prakriti ... 5 years ago

No bro

Himanshu Pathak Pathak 5 years ago

ANSWER

X2 +24+144

Posted by Khushi Upadhyay 5 years ago

CBSE > Class 10 > Mathematics

3 answers

Prince Kumar 5 years ago

Question is wrong either incomplete

Abin Shah 5 years ago

Shiv Jee Gupta 5 years ago

ANSWER

Find the value of sum of cube of zeros of 2x square -3x-1

Posted by Arham Hussain 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Himanshu Pathak Pathak 5 years ago

Sum of zeroes=9/8 Because,a³+b³=(a+b){(a+b)²-3ab}

ANSWER

If a 2m tall person sees a tortoise 4m away what is the angle of depression of the tortoise

Posted by Nisha Raman 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Shubham Mishra 5 years ago

60degree

ANSWER

Midpoint theoram

Posted by Yogesh Kumar 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Vaishu ? 5 years ago

The midpoint theorem states that the line segment in a triangle joining the midpoint of two sides of the triangle is said to be parallel to its third side and is also half of the length of the third side.

ANSWER

If x+y=3 and 3x+2y=4 the value of negative of x is

Posted by Arham Hussain 5 years ago

CBSE > Class 10 > Mathematics

5 answers

Sushant Sharma 5 years ago

We have x+y=3 ----------(i) and. 3x+2y=4 --_------(ii) From eq-(i). we'll get y=3-x -----(iii) Now put the value in eq-(ii) We ll get ,,,,, ::. :: 3x+2(3-x)=4 3x+6-2x=4 3x-2x=4-6 x=-2 Hurray ?????We solve it

King Adithya H M... 5 years ago

x = -2

Paul Mongku 5 years ago

By method of elimination Let, x+y=3......(1) 3x+2y=4.....(2) Multiply (1) by 3 we get, 3x+3y=9......(3) Now, subtract (2)from(3) 3x+3y= 9 - 3x+2y= 4 - - ______________ Y=5.....(4) Again substitute (4) in (1) we get, x+5=3 x =3-5 x = -2 ....ans

Yogita Ingle 5 years ago

x+y=3 -------- (i)

3x+2y=4 ......... (ii)

Multiply (i) by 2 and subtract from (ii)

3x + 2y = 4

2x + 2y = 6

____________

x = -2

Arham Hussain 5 years ago

-2

ANSWER

What is the never between 0 and 1

Posted by Jesh . 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Vaishu ? 5 years ago

Infact their are many numbers

Vaishu ? 5 years ago

7.6 is the number which is never between 0&1.

ANSWER

Class 10 tignomatry formula

Posted by Bhupendra Dhapkari 5 years ago

CBSE > Class 10 > Mathematics

1 answers

Vaishu ? 5 years ago

•sin θ = Opposite Side/Hypotenuse •cos θ = Adjacent Side/Hypotenuse •tan θ = Opposite Side/Adjacent Side •sec θ = Hypotenuse/Adjacent Side •cosec θ = Hypotenuse/Opposite Side •cot θ = Adjacent Side/Opposite Side •cosec θ = 1/sin θ •sec θ = 1/cos θ •cot θ = 1/tan θ •sin θ = 1/cosec θ •cos θ = 1/sec θ •tan θ = 1/cot θ

ANSWER

Class 10 maths ch 15 formula

Posted by Chirag Prajapati 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Chirag Prajapati 5 years ago

Gando

Vaishu ? 5 years ago

1) Probability =( No. of the favourable outcomes)÷ (number of all possible outcomes). 2) Probability of event,P(E) + Probability of an event not happening, P(Ē) = 1