Aliya

Most popular questions and responses by Aliya
1. maths

the boys of a school can be arranged in 12,15. and 18 equal rows and also into a a solid square.What is the least number of boys the school can have?

2. Maths

How many numbers greater than 200 can be formed from the digits 1,2,3,4,5 if no digits is to be repeated in any particular number?

3. Maths

5% of items manufactured by a machine are known to be defective is 4 out of 100 items taken randomly, find the probability that they will be deffective.?

4. Maths

What is the value of cos225+sin165

5. math

what is the meaning of 0 in the decrease of 250? and how?

6. Math

Prove the identity: cosx/1-tanx +sinx/1-cotx

7. physics

: stand with one arm and side of one foot pressed agaonst a wall.can you raose the other leg side ways? if not,why not

8. Chem Lab

I did a chem lab and have to figure out some stuff off of some data I found during the lab Weight of empty crucible and cover: 19.74 g Weight of crucible, cover and hydrated salt: 22.74 g Weight of crucible, cover and hydrated salt after 1st heating: 22.13

9. Chem Lab

I did a chem lab and have to figure out some stuff off of some data I found during the lab Weight of empty crucible and cover: 19.74 g Weight of crucible, cover and hydrated salt: 22.74 g Weight of crucible, cover and hydrated salt after 1st heating: 22.13

10. math

Prove that (secx+tanx)^2=1+sinx/1-sinx Thanks in advance.

11. math

1. Prove the identity:cosx/1-tanx+sinx/1-cotx=sinx+cosx 2.Prove the identity: cosx/1+sinx+1+sinx/cosx=2secx

12. arif

when I tried to find solution of 1/(x-3) + 1/(x-9) = 1/(x-2) + 1/ (x-8) all terms of x are cancelled out why? Is there any rule to find solution of this?plz guide me.

13. math array

my grandaughter is doing array dot to dot sample make as manydifferent arrays as possible number 5 how would i go about doing a array with dots please, desperate in need to keep up with my grandaughters homework.

14. physics

A 40kg box of sweet cherries at 10 ° c cosisting of 30kg water and 10kg cherries is to be frozen at -30°c.Calculate the total amount of heat that needsto be removed from the cherries . The specific heat capacity of cherries is 3.43kj /kg°c. The specific

15. physics

A coolant fluid has a latent heat of evaporation of 234 kj/kg . If the pump rate is 2250g per minute. How much thermal heat is removed each hour?

16. physics

A coolant fluid has a latent heat of evaporation of 234 kj/kg . If the pump rate is 2250g per minute. How much thermal heat is removed each hour?

17. math

Write all possible 3 digit number whose sum of digit is 4

18. physics

If someone is standing on an edge of a table with a book in his hand.if he is going to fall from the este then What should he do to avoid falling from edge?

19. physics

The latent heat of fusion for metal is 246kj per kg. How much heat would be used by melting 10 tonnes of metal?

20. Science

The latent heat of fusion for metal is 246kj per kg. How much heat would be used by melting 10 tonnes of metal?

21. math

he boys of a school can be arranged in 12,15 and 18 equal rows and also into a solid square. what is the least number of boys that the school can have?(Hint: find LCM)

22. physics

;if a hoop A is made of iron & hoop B of wood are pushed at same time down to an inclined plane. find velocity of both if height of plane is 1m?

1. English

because they are not women s

posted on September 5, 2017
2. Math

77

posted on November 3, 2016
3. Math

49

posted on November 3, 2016
4. science

The inner planets are the planets in our Solar System that orbit closest to the sun – Mercury, Venus, Earth, and Mars.

posted on November 9, 2014
5. math

Use a calculator or take out the decimal point and add it in the end. the answer is 665.98

posted on November 7, 2014
6. MATH

1. 9.4°c. 2. 2.5°c

posted on November 7, 2014
7. Chem Lab

I need help with these problems as soon as posible Please

posted on October 9, 2012
8. Chem Lab

Calculate the weight of the water lost by heating. Calculate the percentage of water in the hydrate. Calculate the number of moles of H2O lost by heating. Calculate the number of moles of anhydrous salt. Enter the formula of the hydrated salt. Calculate

posted on October 9, 2012
9. Chem Lab

Calculate the weight of the water lost by heating. These are the other post lab questions Calculate the percentage of water in the hydrate. Calculate the number of moles of H2O lost by heating. Calculate the number of moles of anhydrous salt. Enter the

posted on October 9, 2012
10. chemistry

Electron Affinity: is the energy released when an electron is added to a neutral atom.

posted on August 21, 2011