# Posts by pk

Total # Posts: 18

**Maths Ratio and Proportion**

Q- If 5 men or 7 women can earn Rs. 875 per day, how much 10 men and 5 women earn per day? Q- A photograph of bacteria enlarged 30000 times attains a length of 3 cm. Find the actual length of bacteria. Q- Rashmi types 510 words in half an hour. How many words would she type in...

*November 24, 2016*

**math**

a blacksmith has a rectangular iron sheet with the length of 10 cm. he has to cut out 7 circular disc of radius 1 cm. what is the minimum width of that rectangular sheet?

*October 20, 2016*

**Math**

If sec (t) = 13/12 then,find the value of cos (t)

*November 28, 2015*

**math**

0.1818

*May 19, 2013*

**Math**

268

*May 5, 2013*

**Chemistry**

2 years later and you guys are still saving my ass. Thank you :)

*January 30, 2013*

**Algebra2**

Square both side first 2x)^1/2^2=(x-4)^2 2x=x^2-8x+16 subtract 2x from both sides x^2-10x+16 now FOIL (x-8)(x-2)

*March 13, 2012*

**math magic box**

8 1 6 3 5 7 4 9 2

*March 1, 2012*

**statistics**

The population standard deviation (σ) for a standardized achievement test that is normally distributed is 8. a.) Calculate the standard error of the mean if you draw a random sample of 50 test scores. Show your work for full credit . . ...

*February 21, 2012*

**Math - Expected Value**

If you select a chip at random from a jar with 7 red, 2 green and 1 blue chip. If the chip you pick is red, you win $10,000, if it is green, you wil $20,000 and if it is blue, you lost $100,000. What is your expected value of this game?

*January 9, 2012*

**school**

determine the final concentration of a 20.ml 5.M NaCl solution if 30Mml of water has is added to the solution?

*December 11, 2011*

**Chemistry**

determine the final concentration of a 20.ml 5.M NaCl solution if 30Mml of water has is added to the solution?

*December 11, 2011*

**science**

Describe the plant life, animal life, and geology of the ecosystem in the area in which you live. I live in Northern Illinois. What populations and communities are present? How dependent is your community on this ecosystem? What are the limiting factors of the ecosystem?

*June 29, 2011*

**English**

looks good and sounds great, not bad for not being good with writing and English.

*March 24, 2011*

**11th grade**

what does the value of G=6.67e-11 tell us about the force of gravity

*October 17, 2010*

**physics**

actually, 0.25 with sig figs is 0.3 m/s^2, which is the correct answer.

*March 20, 2009*

**physics**

since acceleration = Net force/ mass, plug in 25 N for force and 100 kg for mass you will get 0.25 m/s^2

*March 20, 2009*

**Health**

Can you name healthy snacks that start with Q, U and X? Thanks. quick milk uberlicious milk x-ray milk

*August 30, 2006*

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