# mayank

Newest questions and responses by mayank
1. ## Chemistry

If the percentage of water of crystallization in MgSO4.xH2O is 13% , then what is the value of 'X'.

2. ## math

a grocer bought 25 dozens of eggs for Rs 525. out of these, 18 eggs were found to be rotten. he sold the remaining eggs at the rate of Rs 26 per dozen. find his gain or loss percent.

3. ## math

(i)prove that 1/1+sintheta +1/1-sin theta=2sec^2 theta

4. ## maths

if cos(alpha + beta)=0 then what will be the value of sin(alpha - beta)

5. ## science

Write about different types of plants?

6. ## verma

what was the special about glubbdubdrib a

7. ## Math

If three sides of a triangle are represented by three consecutive odd numbers and the perimeter is 75cm.Find the length of the sides.

8. ## science

Calculate the weight of gold having specific heat capacity 0.13 joule which is heated from 25 degree c to 300 degree c, where the heat absorbed is 1500 joule?

9. ## math

the angle of a quadrilateral are in the ratio 4:5:3:8. find the measure of each angle

10. ## Statistics[Math]

Construct a histogram for following frequency distribution : Class-intervals Frequency 0-4 5 5-9 8 10-14 12 15-19 9 20-24 4

11. ## Physics

A solid of density 5000 kg/m^3 weighs 0.5 kgf in air.It is completely immersed in water of density 1000 kg/m^3. Calculate the apparent weight of the solid in water.

12. ## Math

Manohar has total of rs 250 as currency notes in the denomination of rs 20 ,rs10 and rs 5. The ratio of the numbers of rs 20 notes and rs10 notes is 3:4. If he has a total of 24 notes,how many notes of each denomination he has?

13. ## Math

Manohar has total of rs 250 as currency notes in the denomination of rs 20 ,rs10 and rs 5. The ratio of the numbers of rs 20 notes and rs10 notes is 3:4. If he has a total of 24 notes,how many notes of each denomination he has?

14. ## Math

Q) Hasan buys two kinds of cloth materials for school uniforms, shirt material costs him Rs 50 per metre and trouser materia l costs him Rs 90 per meter. For every 2 meters of the trouser material he buys 3 meters of shirt material. He sells that material

15. ## Geometry

If two non parallel lines are perpendicular to two other straight lines , each to each . Show that the acute angle between the first pair of lines is equal to the acute angle between the second pair of lines.

16. ## Math

Solve: 3^x^2 : 3^x = 9 : 1

17. ## Math

Solve: 3x + 7y + 5= 0 4x - 3y - 8 = 0 Find p; if: px + y - 1= 0

18. ## Math

Solve: 3x + 7y + 5= 0 4x - 3y - 8 = 0 Find p; if: px + y - 1= 0

19. ## Math

Solve: 3x + 7y + 5= 0 4x - 3y - 8 = 0 Find p; if: px + y - 1= 0

20. ## Math

Solve: i) x/a - y/b = 0 ax + by = a^2 + b^2 ii) a/x - b/y = 0 ab^2/x + a^2 b /y = a^2 + b^2

21. ## Math

Solve x/a-y/b =0 ax+by = a*a + b * b

22. ## Math

Solve x/a-y/b =0 ax+by = a*a + b * b

23. ## Math

3 men and 4 boys can do a piece of work in14 days , while 4 men and 6 boys do the same work in 10 days . How long would it take one man to finish the same work?

24. ## Chemistry

Calculate the volume at s.t.p. occupied by a gas 'Q' originally occupying 153.7cc at 287K and 750mm pressure [vapor pressure of at 287K is 12mm of Hg]

25. ## Chemistry

Calculate the volume at s.t.p. occupied by a dry gas 'Q' originally occupying 153.7cc at 287K and 750mm pressure [vapor pressure of gas 'Q'at 287K is 12mm of Hg]

26. ## math

solve the following: ax + by = a-b bx - ay = a+b find the value of x and y

27. ## chemistry

150 ml M/10 Ba(MnO4)2 in acidic medium can oxidise what?

28. ## english

fill in the blanks with appropriate (suitable)determiners 1.he did seem to have read----scriptures. 2.as----youth i had to work harder.

29. ## english

fill in the blanks with appropriate (suitable)determiners 1.he did seem to have read----scriptures.

1. ## physics

Can you plz explain how it will be 0° bcz still I m Unable to understand....

posted on September 25, 2018
2. ## organic chem

You need only to know the vapor pressure of water at that b.p. which is ~ 179 mm hg, so the (vapor pressure of C2H5I = 760 - 179 )and since you know (M.W. of H2O = 18 g/mol, & M.W. C2H5I = 156 g/mol), you just apply the equation: grams H2O M.W. H2O × P

posted on February 11, 2017
3. ## Math (Geometry)

gtjvj.

posted on December 9, 2016
4. ## Calculus

If f(x) = 8 sec x − 5x, find f '(x).

posted on October 4, 2016
5. ## math

the two numbers are 4 and 2

posted on August 23, 2016
6. ## Science

13 m

posted on May 28, 2016
7. ## financial management

Your annual interest rate (usually called an APR or annual percentage rate) is listed in the loan documents. To get the monthly interest rate that you need, simply divide the annual interest rate by 12. So,16% annual interest rate would be divided by 12 to

posted on May 18, 2016
8. ## Accounting

Answer D is appropriate, The accounts payable entry is found on a balance sheet under the heading current liabilities. It so similar to the Bills payable and Tax payable.

posted on May 18, 2016
9. ## chemistry

45.58 cc

posted on June 27, 2012