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2sin x/2 = 1
890 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
Ans
rd sharma class 10 exercise 5.2 question no 21
685 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
Ans
sir tan 45 =1 then why hav u taken it as root 2 and secondly if we have to consider only magnitude in slope then too magnitude of -1 would be greater than that of -1.73
549 views
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June 26, 2017
0
Ans
Calculate the % of composition in terms of mass of a mass solution obtained by mixing 300g of 25% and 400g of 40% solution by mass
794 views
doubts
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June 26, 2017
Class 09 - Chemistry
0
Ans
what is 1 coulomb?
697 views
doubts
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June 26, 2017
Class 09 - Chemistry
0
Ans
while covering a distance of 30 km, Ajeet takes 2 hours more than Amit. If Ajeet doubles his speed he would take one hour less than Amit. Find their speeds of walking.
1107 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
if in a rectangle length and breadth are reduced by 2 the initial area decreases by 28 sq. units. if the length is decreased by 1 unit and the breadth is increased by 2 units the area increases by 33 sq. units. find the length and breadth of the rectangle.
673 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
ramesh travels 760 km partly by train and partly by car. he takes 8 hrs to travel 160 km by train and the rest by car. he takes 12 mins more if he travels 240 km by train and the rest by car. find the speed of the train and car.
855 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
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The weight of the body at the surface of the earth is 20 N and the radius of the earth is 6400 km . The weight of a body at a height 6400 km above is :
707 views
doubts
asked
June 26, 2017
Class 09 - Physics
0
Ans
give a short note on the character sketch of the tiger king?
747 views
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June 26, 2017
0
Ans
Hi, I have doubt regarding Statistics – R S Aggrawal exercise 9B Question 2. The median class taken in the solution is 28-35. n/2 is 25. Cumulative frequency of 21-28 and 28-35 is 25. As per my understanding, median class should have cumulative frequency just greater than n/2. So, median class should not be 21-28 or 28-35 which has cumulative frequency equal to n/2. Can you please explain why 1) Median class is taken as 28 – 35 (and not 35 – 42 which has cumulative frequency greater than 25) 2) What should be taken as median class if cumulative frequency is same for two classes (one class having frequency 0, thus making cumulative frequency same)?
771 views
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asked
June 26, 2017
Class 10 - Mathematics
0
Ans
Area is a vector quantity or scalar ?
623 views
doubts
asked
June 26, 2017
0
Ans
Hi, The mean obtained by all 3 methods should be same. However, in R S Aggarwal 9D Question 5 mean obtained is 205 if calculated using direct and assumed mean method. If step deviation method is used using assumed mean(A) =225 and class size(h) = 50, mean comes as 208.3. Request you to kindly clarify .
675 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
when we insert soft iron rod in solenoid,why does the magnet become stronger?
717 views
doubts
asked
June 26, 2017
Class 10 - Physics
0
Ans
why do you think language or mother tongue is important for a person
562 views
doubts
asked
June 26, 2017
0
Ans
s chand page 44 and question 50
726 views
doubts
asked
June 26, 2017
Class 10 - Physics
0
Ans
father’s age is three times the sum of his two children.after 5years his age will be twice the sum of ages of two children.find the age of father
711 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
what shows that Edla was very observant, quick and sharp by nature?
1167 views
doubts
asked
June 26, 2017
0
Ans
rd sharma class 10exercise 2.1 question11to 20
738 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
WHY WE USE 3M INSTEAD OF 9M IN CUBING TO OBTAIN 3M OR 3M+1h
722 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
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What is the difference between mass and weight
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