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A vat 600 km of his partly by train and car. He takes 8 hrs if he travel 120 km by train and the rest by car. He takes 20 minutes longer if he travel 200 km by train and the rest by car.find the speed of train and car

Posted by Shubham Rai 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Lcm of 12576

Posted by Santa Bir Gajmer 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Amit Kumar Chaurasia 5 years, 3 months ago

lcm (12,576; 4,052) = 12,739,488: least common multiple, calculated. The numbers have common prime factors.

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Gaurav Seth 5 years, 3 months ago

12576	<a href="http://www.leastcommonmultiple.net/lcm-of-2/">2</a>
6288	<a href="http://www.leastcommonmultiple.net/lcm-of-2/">2</a>
3144	<a href="http://www.leastcommonmultiple.net/lcm-of-2/">2</a>
1572	<a href="http://www.leastcommonmultiple.net/lcm-of-2/">2</a>
786	<a href="http://www.leastcommonmultiple.net/lcm-of-2/">2</a>
393	<a href="http://www.leastcommonmultiple.net/lcm-of-3/">3</a>
131	131
1

LCM = 2⁵. 3¹. 131¹ = 12576

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Simplify question is -17/5,7/5,13/4

Posted by Nilam Dang 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The value of k for which the numbers x, 2x+k, 3x+6 are in A. P. Is?

Posted by Sumaila Ali Choudhary??? 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

It is given that ,

x ,2x+k and 3x+6 are three consecutive terms .

we know that ,

Difference of any two consecutive terms is equal in A.P

Now,

(2x+k)-x = (3x+6)-(2x+k)

=> 2x+k-x = 3x+6-2x-k

=> x+k = x+6-k

=> k+k = x+6-x

=> 2k = 6

=>k = 6/2

=> k = 3

Therefore,

If k = 3 then the given three consecutive terms x,2x+k and 3x+6 are in A.P

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ANSWER

Mcq type all question

Posted by Mehul Patel 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Mehul Patel 5 years, 2 months ago

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Bhawna Koranga 5 years, 3 months ago

In Board exam mcq type 10or 20question will come

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Hi, I am new here can someone answer my question- Using theorem 6.1, prove that a line drawn through the mid-point of one side of a triangle parallel to another side bisects the third side.

Posted by Aditya Shejal 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

Given a ∆ABC such that D is the mid point of AB and DE || BC.

To Prove: AE = EC
Proof: AD = DB (given)

In ∆ABC, we have
DE || BC
Therefore, by using Basic proportionality theorem, we have

Comparing (i) and (ii), we get

2Thank You

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NCERT Question is exercise 3.5

Posted by Priyanshu Pandit 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

prove that Under root 2

Posted by Sourav Keshri 5 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Sourav Keshri 5 years, 1 month ago

Thank's gourav seth

1Thank You

Sourav Keshri 5 years, 1 month ago

Kya re kya bol raha raha hai be

1Thank You

Sourav Keshri 5 years, 3 months ago

Thank bhai

1Thank You

Aniket Baghel 5 years, 1 month ago

MC kahi ke lodu

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Gaurav Seth 5 years, 3 months ago

Let √2 be a rational number

Therefore, √2= p/q [ p and q are in their least terms i.e., HCF of (p,q)=1 and q ≠ 0

On squaring both sides, we get
p²= 2q² ...(1)
Clearly, 2 is a factor of 2q²
⇒ 2 is a factor of p² [since, 2q²=p²]
⇒ 2 is a factor of p

Let p =2 m for all m ( where m is a positive integer)

Squaring both sides, we get
p²= 4 m² ...(2)
From (1) and (2), we get
2q² = 4m² ⇒ q²= 2m²
Clearly, 2 is a factor of 2m²
⇒ 2 is a factor of q² [since, q² = 2m²]
⇒ 2 is a factor of q

Thus, we see that both p and q have common factor 2 which is a contradiction that H.C.F. of (p,q)= 1

Therefore, Our supposition is wrong

Hence √2 is not a rational number i.e., irrational number.

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If costheta - sintheta =x , sintheta + costheta =y prove that x2 + y2 =2

Posted by Kanika Mehra Grover 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Aniket Baghel 5 years, 3 months ago

Hk honey ki behen chod

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Hk Honey 5 years, 3 months ago

Hey

1Thank You

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3.9×10

Posted by Shivani Suraj 5 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Mahi..... ♾ 5 years, 3 months ago

1Thank You

Abhishek Thakur 5 years, 3 months ago

1Thank You

Kukatla Ajith Kumar Yadav Yadav 5 years, 3 months ago

30.9

1Thank You

Hk Honey 5 years, 3 months ago

Hey

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Rishiraj Chahar 5 years, 3 months ago

1Thank You

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Ex2.2 Q2

Posted by Akash Singh Rajput 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Eshna Riwar 5 years, 3 months ago

4th part I can explain

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Sainisaab Ji 5 years, 3 months ago

Write question also

1Thank You

Akash Singh Rajput 5 years, 3 months ago

Hello

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Akash Singh Rajput 5 years, 3 months ago

1Thank You

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Ex 5.3 me konse question delete hai plz tell me that question number. Immediately.

Posted by Vanshika Baliyan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Bhawna Koranga 5 years, 3 months ago

Question number 15 to 20 delete ho gaya ha

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Tarannum Jahan 5 years, 3 months ago

15 to 20 delete hoa hai

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Hk Honey 5 years, 3 months ago

Hey

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Sainisaab Ji 5 years, 3 months ago

Do all

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#:A right triangle whose sides are 3cm and 4cm (other than hypotenuse) is made to revolve about its hypotenuse. find the volume and surface area of the double cone so formed. [choose the value of π as found appropriate.]

Posted by Nitish Adhikari 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the answer is given is 25 and i have got 26 then (surface area chapter) marks would be rewarded?

Posted by Suryansh Singh 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Hk Honey 5 years, 3 months ago

1Thank You

Ananya Nautiyal 5 years, 3 months ago

No the ans is totally wrong but u would get half

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Which of the following has 2as it's Root (a)x2-4x+5=0 (b)2x2-7x+6=0 (c)3x2-6x-2=0 (d)3x2-6x-2=0

Posted by Nayasa . 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Amit Kumar Chaurasia 5 years, 3 months ago

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Q7. If di = xi – A, = 25, A = 250, = 250, then find the value of .

Posted by Umang Katàçgc 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

in ∆ ABC '<B= 90° AND tan A = 1/√3 Probe that sin• cos C + A• sinC = 1

Posted by Amit Tiger 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Lakshay Bansal 5 years, 3 months ago

Three side

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In a ∆abc; <C=90;<abc=∆ o;bc=21 unit and ab=29 show that (cos2 -sin2)=41/841

Posted by Amit Tiger 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

is 2.005 a rational number or irrational number

Posted by Karnika Singh 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Lakshay Bansal 5 years, 3 months ago

Rational

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Shubham Kumar 5 years, 3 months ago

Rational number

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Monalisa Bhoi 5 years, 3 months ago

Rational number

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ANSWER

Why the (a+b)squre

Posted by Bishant Pandey 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Sandeep S 5 years, 3 months ago

(a+b)=a²+2ab+b²

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Jags Sma 5 years, 3 months ago

Hey, here is the answer (a+b)²= a²+b²+2ab Some more ↓↓ (a-b)²=a²+b²-2ab a²-b²= (a+b)(a-b) Mark it as expert answer!! ;););)

1Thank You

Yogita Ingle 5 years, 3 months ago

(a + b)²= (a + b) (a + b)

= a(a+b) + b(a +b)

= a² + ab + ab + b²
= a² + 2ab + b²

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ANSWER

What is credit card. How we can use it. ??

Posted by Vanshika Baliyan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Tarannum Jahan 5 years, 3 months ago

A credit card is issued by a credit card provider, like Capital One, and they are designed to pay for things in shops or online. You can also use credit cards for balance transfers and taking out cash (also known as cash advance or cash withdrawal) from an ATM.

2Thank You

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Please tell all the formulas used in Arithmetic progressions

Posted by Aayan Gupta 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Jags Sma 5 years, 3 months ago

Here is your answer @diya Gupta Series - a,a+d,a+2d,a+3d,...... an= a+(n-1)d Sn = n/2 (a+an) Sn= n/2(2a+(n-1)d) Here are all Mark it as expert answer ;);)

3Thank You

Aastha Bhatt 5 years, 3 months ago

Refer to ncert mathematics book class 10 ch5

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ANSWER

Can anybody explain me about trigometrical identities

Posted by Suraj Kumar 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

2×2=

Posted by Sunny Shokeen 5 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Amogh Kanamadi 5 years, 3 months ago

1Thank You

Nandani Arora 5 years, 3 months ago

1Thank You

Jags Sma 5 years, 3 months ago

2Thank You

Aastha Bhatt 5 years, 3 months ago

1Thank You

Lucy Kumari 5 years, 3 months ago

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ANSWER

Show that the boy and a 7523 and the see 6 minus 7 other vertices of a right angled triangle, also find the area

Posted by Sharon Elsa 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Is exercise 2.4 is important for class 10th exam

Posted by Nitesh Deswal 5 years, 3 months ago

CBSE > Class 10 > Mathematics

5 answers

Bhawna Koranga 5 years, 3 months ago

Yes, every question is most important. In every subject.

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Jags Sma 5 years, 3 months ago

Yes. If course practice it if u have standard maths ?❤️

1Thank You

Liv 5 years, 3 months ago

Yes some questions are most important.

1Thank You

Vidya Sagar Bonu 5 years, 3 months ago

Yes Because they didn't gave this exercise for exam but the questions will give in exam

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Saumya Mundra 5 years, 3 months ago

For 2021 no

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ax/b -by/a=a+b, ax -by =2ab

Posted by Teenu Katoch 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Show that nsqaur is divisible by 8 if n is odd positive integer

Posted by Yash Khatode 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Jags Sma 5 years, 3 months ago

Any odd positive integer n can be written in form of 4q + 1 or 4q + 3. If n = 4q + 1, when n2 - 1 = (4q + 1)2 - 1 = 16q2 + 8q + 1 - 1 = 8q(2q + 1) which is divisible by 8. If n = 4q + 3, when n2 - 1 = (4q + 3)2 - 1 = 16q2 + 24q + 9 - 1 = 8(2q2 + 3q + 1) which is divisible by 8. Here is the answer Mark it as expert answer ;);)

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Gaurav Seth 5 years, 3 months ago

Show that n² - 1 is divisible by 8, if n is an odd positive integer.

Any odd positive integer n can be written in form of 4q + 1 or 4q + 3.

If n = 4q + 1, when n² - 1 = (4q + 1)² - 1 = 16q² + 8q + 1 - 1 = 8q(2q + 1) which is divisible by 8.

If n = 4q + 3, when n² - 1 = (4q + 3)² - 1 = 16q² + 24q + 9 - 1 = 8(2q² + 3q + 1) which is divisible by 8.

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ANSWER

Find the value of k if p(4 -2)is the midpoint of the line segment joining the points A(5k 3)

Posted by Misba K M 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

A train travels 360 km at a uniform speed.ifthe speed has been 4 km/h more,it would have take 2 hour less for the same journey.find the speed of train

Posted by Disha Rohage 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Bhawna Koranga 5 years, 3 months ago

Total distance=360km . let the speed of train be=xkm/h. total distance to cover 360at the speed of xkm/h =360h apon x(eqi no -1)if the speed of train more =4km. speed of train (x+4)km /h total time to cover 360km at the speed of(x+4)km/h=360h apon x+5(eqi no 2) according to question 360/x+4-360/x=2. 360(1/x+5-1/x)=2 than u can do yourself .Thanks

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Bhawna Koranga 5 years, 3 months ago

Let I help u

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